Icannos/chess_studies huggingface dataset:
[Event "ðŸš« How to Avoid BLUNDERS ðŸš«: SIMPLIFY the Position When You Are Low on Time"]
[Site "https://lichess.org/study/kKRTP1Ft/s2gBgKZY"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/FunnyAnimatorJimTV"]
[ECO "?"]
[FEN "2r5/p5pk/4Qp2/p1P1p2p/q3n2P/B2r4/2R2PPK/1R6 b - - 0 1"]
[Opening "?"]
[SetUp "1"]
[UTCDate "2017.10.20"]
[UTCTime "03:05:15"]
[Variant "Standard"]

{ Here we have a game between two grandmasters. Imagine you are the black pieces. What do you do? Also let's mention that black is in time trouble.

When you are in time pressure, try to SIMPLIFY the position; exchange pieces to reduce calculation necessity, avoid tactical complications, etc.

The best move in this position is Nd6. However, it would take a lot more time to discover that move, and black can't afford to do so. What black needs to do is offer the exchange of pieces. How can we do this? [%csl Bd6][%cal Be4d6] } 1... Qc6 { Correct! This was played in the game. Black avoids tactical complications, offers exchange of pieces and protects more of his own pieces. [%csl Re6,Ge4,Gc8,Gc6][%cal Rc6e6,Gc6e4,Gc6c8,Gc8c6] } ( 1... Qxc2 2. Qf5+ { Although black may gain more material here, it's still overcomplicated tactically and black could make an oversight at some point. This line is just too complicated and black needs to calculate lots of white's possibilities, which is not good when you're tight on time. [%csl Rh7,Re4,Rc8][%cal Rf5h7,Rf5e4,Bf5c2,Rf5c8] } ) 2. Qf7 { [%csl Rh5][%cal Rf7h5] } 2... Qe8 { Still offering exchanges. } 3. Qc4 Rd4 { White's attempts for the attack are gone and the position will be simplified easily soon. This is an example of how to play in time trouble- don't go into tactical variations and offer the exchange of pieces to simplify the position. } *
[Event "Rated Blitz game"]
[Site "https://lichess.org/HZiWJ8uo"]
[Date "2017.10.21"]
[Round "-"]
[White "FunnyAnimatorJimTV"]
[Black "zanibr"]
[Result "0-1"]
[Annotator "lichess.org"]
[BlackElo "1784"]
[ECO "A52"]
[Opening "Indian Defense: Budapest Defense, Rubinstein Variation"]
[Termination "Normal"]
[TimeControl "180+0"]
[UTCDate "2017.10.21"]
[UTCTime "00:58:12"]
[Variant "Standard"]
[WhiteElo "1675"]

1. d4 { One last extremely useful tip I can give you is to PLAY SLOWER GAMES. This means time controls longer than 5 minutes at least. Take your time and opt for 10+0 games or more online. Get into the habit of taking your time and moving slowly; haste makes waste. Use the extra time to double check EVERY move you make, and perform the Anti-Blunder Check.
This was a game I recently played with an extremely short 3 minute time control, and I moved too quickly and lost to a blunder early. } 1... Nf6 2. c4 e5 { Budapest Gambit, a tricky opening with lots of tricks. } 3. dxe5 { I'm familiar with some of the lines in the Budapest, so I just went into the mainline. } 3... Ng4 4. Bf4 { A52 Budapest Defense: Rubinstein Variation } 4... Bc5 { At this point, I had the move ...Nc6 in muscle memory, and I would respond with Nf3. However, I simply overlooked the fact that he was targeting my f2 pawn. [%csl Rf2][%cal Rg4f2,Rc5f2,Gb8c6] } 5. Nf3 { I simply didn't take the time to see what my opponent did exactly, and it cost me dearly here. [%csl Ge5,Rf2][%cal Gf3e5] } 5... Nxf2 { [%cal Rf2d1,Rf2h1] } 6. Qd5 Bb4+ { And, again! I saw his move and reacted instantly, not even noticing his knight was undefended. [%csl Rf2][%cal Re1f2] } 7. Bd2 Bxd2+ 8. Nbxd2 Nxh1 9. e4 c6 10. Qd4 Qb6 11. Qc3 { Yet again, another crazy blunder that happened because I was moving too fast. I resigned here.
You really should practice getting into the right mindset with playing less time-intense games and focus on making the best moves possible and to not overlook what your opponent does in a flash. [%csl Rf2][%cal Rb6f2,Rh1f2] } 0-1
[Event "ðŸš« How to Avoid BLUNDERS ðŸš«: Final Notes"]
[Site "https://lichess.org/study/kKRTP1Ft/LFfUZ46z"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/FunnyAnimatorJimTV"]
[ECO "?"]
[FEN "q2r2k1/6pp/8/6N1/8/8/4Q1PP/7K w - - 0 1"]
[Opening "?"]
[SetUp "1"]
[UTCDate "2017.10.20"]
[UTCTime "17:10:03"]
[Variant "Standard"]

{ I hope you enjoyed this study and found it useful. Some last things I want to mention again are the fact that solving tactical puzzles are very useful to do. If you are able to spot tactics and your opponent's blunders, you will have more fun, explosive wins.

Here we have a famous tactical puzzle; can you solve it? :) } 1. Qe6+ { Yup! [%cal Ge6g8] } ( 1. Qc4+ { This move fails because of ...Qd5. [%csl Rd5][%cal Ra8d5] } ) 1... Kh8 2. Nf7+ { Keep going! [%cal Gf7h8] } 2... Kg8 3. Nh6+ { Double-check! [%cal Rh6g8,Re6g8] } 3... Kh8 { And now...Can you spot it? :) } 4. Qg8+ { BOOM! [%csl Bg8][%cal Bg8h8] } 4... Rxg8 { And the final blow... } 5. Nf7# { Excellent! Smothered checkmate! Some more overviews on the tips I've shown: Try to VISUALIZE openings you play or your best winning games. FOCUS on the chess- do your best to not think about other things before/during the game. AVOID Tactical Openings and don't take mainline risks when your opponent is better prepared. Try to grasp the initiative and attack- don't defend, because defenders blunder more often. Also, when you're in time trouble, simplify the position, exchange pieces, protect your pieces and avoid tactical complications.
EXTREMELY IMPORTANT and what I'm suggesting you take from this study the most is to keep track of the OPPONENT'S plans first and foremost before you consider your own plans. Once you've checked them, THEN you can continue with your own planning. Also, perform the Anti-Blunder Check. Before playing your elected move, ask yourself if there are any checks, captures or threats your opponent can play, and make sure you have a good response for each of them. These two tips should help you to eliminate 80% of your own blunders. [%csl Gh8][%cal Gf7h8] } *
[Event "Opening traps: Stafford Gambit"]
[Site "https://lichess.org/study/GmTxHf4Z/CGY7UHlP"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C42"]
[Opening "Russian Game: Stafford Gambit"]
[UTCDate "2019.12.06"]
[UTCTime "15:45:48"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 { This move is actually quite bad and white can get a good advantage from this, but most players don't know how to deal with the opening (or with the Petrov at all), so you could certainly give it a try. } 4. Nxc6 dxc6 5. d3 Bc5 6. Bg5 $4 Nxe4 $3 7. Bxd8 $4 ( 7. Be3 $7 Bxe3 8. fxe3 Qh4+ 9. Ke2 $4 ( 9. g3 Nxg3 10. hxg3 Qxh1 $19 ) 9... Qf2# ) 7... Bxf2+ 8. Ke2 Bg4# *
[Event "Opening traps: Noah's Ark Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/wGJ70Ln9"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C71"]
[Opening "Ruy Lopez: Noah's Ark Trap"]
[UTCDate "2019.12.06"]
[UTCTime "15:49:37"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4 $4 ( 8. Bd5 Rb8 $10 ) 8... c5 9. Qd5 Be6 $7 10. Qc6+ Bd7 11. Qd5 c4 $19 *
[Event "Opening traps: Old Benoni Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/A4xrquJT"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "A43"]
[Opening "Benoni Defense: Benoni Gambit Accepted"]
[UTCDate "2019.12.06"]
[UTCTime "15:52:03"]
[Variant "Standard"]

1. d4 c5 $5 2. dxc5 e6 3. b4 $2 a5 4. c3 $2 ( 4. a3 axb4 5. axb4 Rxa1 $19 ) ( 4. b5 Bxc5 $15 ) 4... axb4 5. cxb4 $4 Qf6 $19 *
[Event "Opening traps: QGA trap"]
[Site "https://lichess.org/study/GmTxHf4Z/D4Z7iOnR"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D20"]
[Opening "Queen's Gambit Accepted: Old Variation"]
[UTCDate "2019.12.06"]
[UTCTime "15:53:19"]
[Variant "Standard"]

1. d4 d5 2. c4 dxc4 3. e3 b5 4. a4 c6 $2 ( 4... a6 $2 5. axb5 axb5 $4 6. Rxa8 $18 ) 5. axb5 cxb5 $4 6. Qf3 $18 *
[Event "Opening traps: Lasker Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/aRkvYtaJ"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D08"]
[Opening "Queen's Gambit Declined: Albin Countergambit, Lasker Trap"]
[UTCDate "2019.12.06"]
[UTCTime "15:54:59"]
[Variant "Standard"]

1. d4 d5 2. c4 e5 $5 { The Albin is an opening that's very risky and tries to impede with White's development by giving up a pawn (similar idea as in the Falkbeer), and this opening leads to very tricky positions for both sides. In theory, white should be better, but there are plenty of tricks in it, so you could give it a try. } 3. dxe5 d4 4. e3 $2 ( 4. Qd3 ) 4... Bb4+ 5. Bd2 dxe3 $3 6. Bxb4 $4 ( 6. fxe3 $15 Qh4+ ) 6... exf2+ 7. Ke2 $7 fxg1=N+ $3 8. Rxg1 $4 ( 8. Ke1 $19 Qh4+ 9. g3 Qe4+ 10. Qe2 ) 8... Bg4+ 9. Kf2 Qxd1 *
[Event "Opening traps: Legal trap"]
[Site "https://lichess.org/study/GmTxHf4Z/TTaLthH8"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C50"]
[Opening "Italian Game: Paris Defense"]
[UTCDate "2019.12.06"]
[UTCTime "16:00:58"]
[Variant "Standard"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nc6 4. Nc3 Bg4 5. h3 Bh5 $2 6. Nxe5 Nxe5 ( 6... Bxd1 $4 7. Bxf7+ Ke7 8. Nd5# ) 7. Qxh5 Nxc4 8. Qb5+ c6 9. Qxc4 $16 *
[Event "Opening traps: Mortimer trap"]
[Site "https://lichess.org/study/GmTxHf4Z/mr5WyTok"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C65"]
[Opening "Ruy Lopez: Berlin Defense, Mortimer Trap"]
[UTCDate "2019.12.06"]
[UTCTime "16:02:10"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 { This is a weird line similar to the Cozio where Black settles for a calm position without complications. } 5. Nxe5 $2 c6 6. Nc4 d6 $1 ( 6... cxb5 $4 7. Nd6# ) 7. Ba4 b5 $17 *
[Event "Opening traps: QGD Elephant Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/eK8KIJVk"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D51"]
[Opening "Queen's Gambit Declined: Modern Variation, Knight Defense"]
[UTCDate "2019.12.06"]
[UTCTime "16:05:49"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. Nxd5 $4 Nxd5 $3 7. Bxd8 Bb4+ $3 8. Qd2 Bxd2+ 9. Kxd2 Kxd8 $19 *
[Event "Opening traps: Halosar Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/xWQyLr7Z"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D00"]
[Opening "Blackmar-Diemer Gambit Accepted: Ryder Gambit"]
[UTCDate "2019.12.06"]
[UTCTime "16:07:16"]
[Variant "Standard"]

1. d4 d5 2. e4 $5 { This move is extremely aggressive, and a bit like the Evans Gambit since white sacrifices a pawn for rapid development and attacking possibilities. } 2... dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 $5 Qxd4 6. Be3 Qb4 $6 7. O-O-O Bg4 $4 8. Nb5 $18 Bxf3 ( 8... Na6 9. Qxb7 Qe4 10. Qxa6 Qxe3+ 11. Kb1 $18 ) 9. Nxc7# *
[Event "Opening traps: Weird Petrov (Russian Game) Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/PjAfBO21"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C42"]
[Opening "Russian Game: Damiano Variation, Kholmov Gambit"]
[UTCDate "2019.12.06"]
[UTCTime "16:13:18"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 $5 { This line loses a pawn for black if white plays correctly, but this is something that you could absolutely try in Blitz. } 4. Qe2 Qe7 5. Qxe4 d6 6. d4 dxe5 7. dxe5 ( 7. Qxe5 Qxe5+ 8. dxe5 Nc6 ) 7... Nc6 8. Bf4 $5 g5 9. Bg3 $4 f5 $3 10. Qe2 ( 10. Qxf5 Bxf5 ) 10... f4 $19 *
[Event "Opening traps: Marshall Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/u4yXkETi"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C42"]
[Opening "Russian Game: Classical Attack, Marshall Trap"]
[UTCDate "2019.12.07"]
[UTCTime "05:14:37"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 Bg4 9. cxd5 f5 $16 10. Re1 $2 ( 10. Nc3 $16 ) 10... Bxh2+ $3 11. Kxh2 Nxf2 12. Qe2 Nxd3 13. Qxd3 ( 13. Qe6+ $17 ) 13... Bxf3 14. Qxf3 Qh4+ 15. Qh3 Qxe1 $19 *
[Event "Opening traps: Bobby's Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/fRqYBYnv"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "B35"]
[Opening "Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation"]
[UTCDate "2019.12.07"]
[UTCTime "05:17:45"]
[Variant "Standard"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 O-O 8. Bb3 Na5 $2 9. e5 Nxb3 ( 9... Nh5 10. g4 $18 ) ( 9... Ne8 $4 10. Bxf7+ Kxf7 11. Ne6 Kxe6 $4 ( 11... dxe6 $18 12. Qxd8 ) 12. Qd5+ Kf5 13. g4+ Kxg4 14. Rg1+ Kh4 15. Bg5+ Kh5 16. Qd1+ Rf3 17. Qxf3# ) 10. exf6 Nxa1 11. fxg7 Kxg7 12. Qxa1 $16 *
[Event "Opening traps: Blackburne-Shilling Gambit"]
[Site "https://lichess.org/study/GmTxHf4Z/1gNZ8Yvy"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C50"]
[Opening "Italian Game: Blackburne-Kostić Gambit"]
[UTCDate "2019.12.07"]
[UTCTime "05:21:52"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxe5 $6 ( 4. Nxd4 exd4 $16 ) ( 4. Ng1 ) 4... Qg5 5. Nxf7 $4 ( 5. Bxf7+ Kd8 6. O-O Qxe5 $17 ) 5... Qxg2 6. Rf1 Qxe4+ 7. Be2 ( 7. Qe2 $7 Nxe2 8. Bxe2 Kxf7 $19 ) 7... Nf3# *
[Event "Opening traps: Magnus Smith Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/1G6rJ9dG"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "B57"]
[Opening "Sicilian Defense: Magnus Smith Trap"]
[UTCDate "2019.12.08"]
[UTCTime "14:15:38"]
[Variant "Standard"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 g6 $6 7. Nxc6 bxc6 8. e5 dxe5 ( 8... Ng4 9. Bf4 Bh6 10. Bxh6 Nxh6 11. Qd2 Nf5 12. g4 Ng7 $16 ) 9. Bxf7+ Kxf7 10. Qxd8 $18 *
[Event "Opening traps: Würzburger Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/WTOUbngs"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C29"]
[Opening "Vienna Game: Vienna Gambit, Wurzburger Trap"]
[UTCDate "2019.12.08"]
[UTCTime "14:20:21"]
[Variant "Standard"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 ( 3... exf4 4. e5 Ng8 5. Nf3 $14 ) 4. fxe5 Nxe4 5. d3 Qh4+ 6. g3 Nxg3 7. Nf3 Qh5 8. Nxd5 Bg4 { This is an extremely weird position and there are most definitely lots of ideas that haven't been explored, so feel free to share ideas in the comment section. } ( 8... Nxh1 9. Nxc7+ Kd8 10. Nxa8 $16 ) 9. Nf4 Bxf3 10. Nxh5 Bxd1 11. hxg3 Bxc2 12. b3 $18 *
[Event "Opening traps: Hikaru Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/kUxbtA2c"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "A05"]
[Opening "Zukertort Opening: Nimzo-Larsen Variation"]
[UTCDate "2019.12.08"]
[UTCTime "14:50:55"]
[Variant "Standard"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 O-O 5. d4 c5 6. dxc5 Qa5+ 7. c3 Qxc5 8. Ba3 Qb6 9. Bxe7 $14 { This trap only wins a pawn, but if you're playing an important game in Classical or Rapid, this could definitely come in handy. } *
[Event "Opening traps: Milner-Barry Gambit Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/lLPcDGLt"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C02"]
[Opening "French Defense: Advance Variation, Milner-Barry Gambit"]
[UTCDate "2019.12.14"]
[UTCTime "08:29:28"]
[Variant "Standard"]

1. e4 e6 2. d4 d5 3. e5 $10 { Nc3 or Nd2 are considered to be better in this position and the Advance Variation gives black a lot of counterplay, but white is nevertheless ok. } ( 3. Nc3 $14 ) 3... c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 $5 cxd4 7. cxd4 Nxd4 ( 7... Bd7 $15 ) 8. Nxd4 Qxd4 9. Bb5+ $18 *
[Event "Opening traps: Reti Gambit Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/ISJACJVV"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "A09"]
[Opening "Réti Opening: Réti Accepted"]
[UTCDate "2019.12.14"]
[UTCTime "08:32:30"]
[Variant "Standard"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 Bg4 $2 ( 4... c5 $14 ) 5. Bxf7+ Kxf7 6. Ne5+ Ke8 7. Nxg4 $16 *
[Event "Opening traps: Semi-Slav Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/IQ7BOgxD"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D45"]
[Opening "Semi-Slav Defense: Main Line"]
[UTCDate "2019.12.20"]
[UTCTime "03:17:00"]
[Variant "Standard"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Bd6 $5 6. Bd3 O-O 7. Qc2 dxc4 8. Bxc4 b5 9. Bd3 Bb7 $2 ( 9... Re8 $16 ) ( 9... h6 $16 ) 10. e4 Be7 11. e5 Nd5 12. Bxh7+ $16 { [%csl Gc2] } *
[Event "Opening traps: Monticelli Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/jQ8bM5M3"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "E11"]
[Opening "Bogo-Indian Defense: Monticelli Trap"]
[UTCDate "2019.12.20"]
[UTCTime "03:21:21"]
[Variant "Standard"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 b6 6. g3 Bb7 7. Bg2 O-O 8. Nc3 Ne4 9. Qc2 Nxc3 10. Ng5 $3 Ne4 ( 10... Bxg2 11. Qxh7# ) ( 10... g6 11. Bxb7 Nxe2 12. Qxe2 Nc6 13. Bxa8 Qxa8 $18 ) 11. Bxe4 Bxe4 12. Qxe4 Qxg5 13. Qxa8 $16 { In the Monticelli Trap, White wins the exchange, but you still need accurate play to get your rooks out and play for the win. } *
[Event "Opening traps: Greco Attack Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/DkIAfgzD"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C54"]
[Opening "Italian Game: Classical Variation, Greco Gambit, Greco Variation"]
[UTCDate "2020.01.11"]
[UTCTime "17:54:46"]
[Variant "Standard"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 { This is the much more aggressive variation of the Giuocco Piano, with d3 leading to more solid but less interesting positions. } 5... exd4 6. cxd4 { Gambiting a pawn for some good attacking chances. } 6... Bb4+ 7. Nc3 { And we enter the Greco Attack. } 7... Nxe4 8. O-O Nxc3 ( 8... Bxc3 9. bxc3 $13 { In this variation, both sides have their chances, white with the bishop pair and the initiative for black's pawn. } ) 9. bxc3 Bxc3 10. Qb3 Bxa1 11. Bxf7+ Kf8 12. Bg5 Ne7 13. Ne5 Bxd4 14. Bg6 d5 15. Qf3+ { And white is winning. } *
[Event "Opening traps: Semi-Tarrasch Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/zQhacG4N"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "D41"]
[Opening "Queen's Gambit Declined: Semi-Tarrasch Defense"]
[UTCDate "2020.01.12"]
[UTCTime "10:06:42"]
[Variant "Standard"]

1. d4 { The Semi- Tarrasch is of course also achievable with the following line: } 1... d5 ( 1... Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 ) 2. c4 e6 3. Nf3 Nf6 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. Bg5 Be7 8. Bxf6 Bxf6 9. Qxd5 $4 Bxc3+ 10. bxc3 Qxd5 *
[Event "Opening traps: Morphy Gambit Trap #1"]
[Site "https://lichess.org/study/GmTxHf4Z/cEw8Zkwq"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C27"]
[Opening "Bishop's Opening: Boden-Kieseritzky Gambit"]
[UTCDate "2020.01.25"]
[UTCTime "02:45:55"]
[Variant "Standard"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 { This move gambits a pawn for rapid development, and of course to set plenty of traps. } 3... Nxe4 4. Nc3 Nxc3 5. dxc3 Nc6 6. Ng5 d5 7. Bxd5 Be6 8. Nxe6 fxe6 9. Qh5+ g6 10. Bxc6+ bxc6 11. Qxe5 Rg8 12. Bf4 { White is up a pawn, has destroyed the king's defences and should win easily. } *
[Event "Opening traps: Morphy Gambit Trap #2"]
[Site "https://lichess.org/study/GmTxHf4Z/00fcflOe"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C27"]
[Opening "Bishop's Opening: Boden-Kieseritzky Gambit"]
[UTCDate "2020.01.25"]
[UTCTime "02:48:36"]
[Variant "Standard"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. Nc3 Nxc3 5. dxc3 d6 6. Nxe5 dxe5 ( 6... Qe7 7. Bxf7+ Kd8 8. O-O Qxe5 9. Re1 Qg5 ( 9... Qc5 10. Re8+ Kd7 11. Qg4+ $18 ) ) 7. Bxf7+ Ke7 8. Bg5+ Kxf7 9. Qxd8 { White is up a queen for two pieces, has destroyed the king's defences and is easilt winning. } *
[Event "Opening traps: Morphy Gambit Trap #3"]
[Site "https://lichess.org/study/GmTxHf4Z/iKiGvTfU"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "C27"]
[Opening "Bishop's Opening: Boden-Kieseritzky Gambit"]
[UTCDate "2020.01.25"]
[UTCTime "02:50:48"]
[Variant "Standard"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. Nc3 Nxc3 5. dxc3 e4 6. Ng5 { White now has an unstoppable attack against the f7 pawn. } 6... d5 7. Bxd5 Be6 8. Bxb7 $18 *
[Event "Opening traps: Delayed Alapin Trap"]
[Site "https://lichess.org/study/GmTxHf4Z/Xt8xFKc1"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/BDWH"]
[ECO "B50"]
[Opening "Sicilian Defense: Delayed Alapin"]
[UTCDate "2020.02.05"]
[UTCTime "17:28:53"]
[Variant "Standard"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 { Perfectly logical, going after the e4 pawn. } 4. Be2 Nxe4 $4 5. Qa4+ Bd7 6. Qxe4 $18 *
[Event "Catalan: Intro"]
[Site "https://lichess.org/study/OAlZZKi1/PI9pYj4Y"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "?"]
[FEN "rnbqkbnr/pppppppp/8/8/2PP4/5NP1/PP2PPBP/RNBQK2R b KQkq - 2 5"]
[Opening "?"]
[SetUp "1"]
[UTCDate "2021.05.12"]
[UTCTime "17:13:57"]
[Variant "Standard"]

{ The catalan is not a system. It is very complex and theory based opening but in the end if white plays accurately they will have a small yet lingering advantage and usually a better pawn structure. This opening is not aggressive by any means but is very positional. If you like playing endgames, this opening is for you. If you like to launch kingside attacks, play other openings. } 5... Nf6 { I will not be explaining many of the more obvious and routine moves. because of this, you should be well versed in the catalan before studying this. For anybody under 1000 i recommend that you not focus on studying openings especially the catalan, a complex and very theoretical opening. } 6. O-O { This study goes deep into the theory of some the more critical lines against the catalan as well as exploring many sidelines and variations. I have tried to make this study as extensive as possible as well as to make it possible to form a complete catalan repertoire around this opening study. } 6... e6 { I will be working on improving this study for a while, if you have any critical lines for me to add please put them in chat. use other resources to learn the catalan, this study is not end all be all. Youtube has many great lectures on the catalan. } *
[Event "Catalan: Open Catalan, Mainline (Qc2, Classical Line)"]
[Site "https://lichess.org/study/OAlZZKi1/FU7rxoHs"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E06"]
[Opening "Catalan Opening: Closed"]
[UTCDate "2021.04.07"]
[UTCTime "09:47:14"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 { simply going after the pawn, this is preferred over Ne5 because it saves time. } ( 7. Ne5 h6 ) 7... a6 ( 7... b5 { holding on to the pawn } 8. a4 bxa4 ( 8... b4 9. Nfd2 c6 10. Nxc4 Qxd4 11. Rd1 Qc5 12. Be3 Qh5 13. Nbd2 ) 9. Bg5 { no need to go after the pawns right away. They are extremely weak and impossible to hold on to. This move tries to prevent black from playing Nd5 in order to block the g2 bishop from attacking black's rook in the event that white moves their f3 knight to open up their bishop. } 9... h6 10. Bxf6 Bxf6 11. Ng5 { engine move, gives up the knight for the rook. } 11... hxg5 12. Bxa8 { white is up and exchange and black has doubled pawns. } ) ( 7... Bd7 ) 8. a4 { shuts down b5 } ( 8. Qxc4 b5 9. Qc2 { this allows b5 grabbing a lot of space } 9... Bb7 10. Bd2 Be4 11. Qc1 Bb7 12. Bf4 Bd6 ) ( 8. Nbd2 { why... why? its a very common move but it lets black keep the pawn and try to play for an advantage } 8... b5 ) ( 8. Rd1 { also a terrible move, black simply keeps the pawn } ) 8... Bd7 ( 8... Nc6 9. Qxc4 Qd5 10. Nbd2 { no need to take first, simply use your time to develop } 10... Rd8 11. e3 Qxc4 12. Nxc4 ) 9. Qxc4 ( 9. Rd1 Bc6 10. Nc3 Bxf3 11. Bxf3 Nc6 12. Bxc6 { Since black has traded off their light squared bishop it is no longer as dangerous to trade off white's light squared bishop. Here black has tripled isolated pawns which will be won in the near future. This endgame will be far easier for white althought the engine thinks it is equal. } ) 9... Bc6 { opposing whites bishop. Black often tries to neutralize white's powerful light squared bishop becayse in the open catalan it is extremely powerful. } 10. Bg5 ( 10. Bf4 Bd6 { Not recommended, just play Bg6 } 11. Bxd6 cxd6 12. Nc3 Bxf3 13. Bxf3 { Blunders practically all advantage } 13... d5 ) 10... Bd5 ( 10... Nbd7 11. Nc3 h6 12. Bxf6 Nxf6 13. b4 Bd5 14. Nxd5 exd5 15. Qb3 ) ( 10... a5 11. Nc3 Na6 12. Bxf6 Bxf6 13. e4 Nb4 14. Rfd1 b6 15. Ne1 { [%csl Rc2][%cal Gf3e1,Rb4c2] } ) 11. Qc2 Be4 12. Qc1 { awkward move but the engine and masters like it. I cannot pretend to know the difference between Qc1 and Qd2. } ( 12. Qd2 h6 13. Bxf6 Bxf6 ) 12... h6 13. Bxf6 Bxf6 { [%cal Re4f3,Rg2f3,Rd8d4] } 14. Rd1 a5 15. Nbd2 Bxf3 ( 15... Bh7 { strong pressure on queenside [%cal Rf6b2,Gh7c2] } 16. Nb3 c6 17. Qc3 { [%cal Gf3e5] } ) 16. Bxf3 { maintains pressure on the diagonal, e3 can be played later to protect the d pawn [%cal Gf3b7] } ( 16. Nxf3 { more natrual but makes it easier for black to develop because the bishop does not control the diagonal. } ) *
[Event "Catalan: Open Catalan, Second Mainline (Ne5)"]
[Site "https://lichess.org/study/OAlZZKi1/kGZF1VJI"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E06"]
[Opening "Catalan Opening: Closed"]
[UTCDate "2021.03.25"]
[UTCTime "02:20:22"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } ( 2... Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e5 6. Nf3 exd4 7. Qxd4 Qxd4 8. Nxd4 Bb4 ) 3. Nf3 { [%eval 0.0] } ( 3. g3 { Another move order, its used by Ding Liren but there is little to no difference } 3... Nf6 4. Bg2 Be7 5. Nf3 ) 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... Be7 { [%eval 0.33] } ( 4... dxc4 5. Bg2 a6 6. O-O Nc6 7. e3 Bd7 8. Qe2 b5 9. b3 cxb3 10. axb3 Be7 11. Bb2 O-O 12. Rc1 Nb4 13. Ne5 Ra7 ( 13... Nfd5 14. Na3 Be8 15. e4 Nb6 16. Nc2 a5 17. Nxb4 Bxb4 18. Nc6 Bxc6 19. Rxc6 a4 20. Rac1 a3 21. Ba1 Ra7 22. Qxb5 Qe7 23. Qh5 Rd8 ) 14. Nc6 Nxc6 15. Rxc6 ( 15. Bxc6 Bxc6 16. Rxc6 Qd5 17. Rcxa6 ) 15... Bxc6 ) 5. Bg2 { [%eval 0.13] } 5... O-O { [%eval 0.28] } 6. O-O { [%eval 0.13] } 6... dxc4 { [%eval 0.28] } 7. Ne5 { [%eval 0.12] this line is less complex than the Qc2 lines but is more drawish because many pieces are traded } ( 7. Qc2 a6 8. a4 Bd7 9. Qxc4 ) 7... Nc6 { [%eval 0.36] } 8. Bxc6 { [%eval 0.19] } 8... bxc6 { [%eval 0.15] } 9. Nxc6 { [%eval 0.28] } 9... Qe8 { [%eval 0.17] } 10. Nxe7+ { [%eval 0.2] } 10... Qxe7 { [%eval 0.21] } 11. Qa4 { [%eval 0.38] } 11... e5 ( 11... c5 12. Qxc4 cxd4 13. Qxd4 e5 14. Qd3 Bh3 15. Re1 ( 15. Rd1 { this is a huge blunder. } 15... Rad8 16. Qc2 Qb7 17. f3 e4 18. Rxd8 Rxd8 ) ) 12. dxe5 Qxe5 13. Qxc4 Be6 { Qd3 and Qc2 are both good here, Qd3 is more popular but the engine likes Qc2 } 14. Qc2 { white is up a pawn but black has strong attacking chances. White is extremely underdeveloped for the cost of the pawn but if white knows this line they can survive the attack. } ( 14. Qd3 Bh3 { tempting, this gives white too much time though. White wants to move his rook anyways in order to stop Rd8. } 15. Rd1 ) 14... Bf5 15. Qd2 Bh3 16. Re1 Rad8 17. Qe3 Qd5 18. f3 Ng4 19. Qc3 Rfe8 { [%cal Gb1a3,Ga3c4] } 20. Na3 Qb7 21. Bf4 Qb6+ 22. e3 Qb7 23. e4 Qb6+ 24. Be3 Nxe3 25. Rxe3 *
[Event "Catalan: Open Catalan, Mainline 3"]
[Site "https://lichess.org/study/OAlZZKi1/l3rpqI0T"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E06"]
[Opening "Catalan Opening: Closed"]
[UTCDate "2021.04.05"]
[UTCTime "18:25:42"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... Be7 { [%eval 0.33] } 5. Bg2 { [%eval 0.13] } 5... O-O { [%eval 0.28] } 6. O-O { [%eval 0.13] } 6... dxc4 { [%eval 0.28] } ( 6... c6 7. Qc2 Nbd7 8. Nbd2 b6 9. e4 ) 7. Ne5 { [%eval 0.12] } 7... Nc6 { [%eval 0.36] } 8. Nxc6 { [%eval -0.11] } 8... bxc6 { [%eval -0.29] } 9. Na3 { [%eval 0.09] } 9... Bxa3 { [%eval -0.06] } 10. bxa3 { [%eval 0.08] } 10... Ba6 { [%eval -0.13] } 11. Qd2 { [%eval -0.21] } ( 11. Bxc6 Rb8 12. Qa4 Rb6 ) 11... Rb8 { [%eval -0.34] } 12. Qa5 ( 12. Rd1 ) 12... Qc8 13. a4 Rd8 14. Ba3 Rxd4 15. Rfb1 *
[Event "Catalan: Open Catalan, Open Defense (mainline)"]
[Site "https://lichess.org/study/OAlZZKi1/65gFt4i6"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.04.07"]
[UTCTime "09:36:30"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... dxc4 { [%eval 0.48] } 5. Bg2 { [%eval 0.2] } ( 5. Qa4+ Nbd7 6. Qxc4 { This is a possibility but it wastes a lot of time, you will be a tempo down the rest of the game and you will be the one fighting to equalize. Do not play this line } ) 5... a6 { [%eval 0.29] } 6. O-O { [%eval 0.38] } 6... Nc6 { [%eval 0.43] } 7. e3 { [%eval 0.2] } ( 7. a4 ) 7... Bd7 { [%eval 0.51] } 8. Qe2 { [%eval 0.17] } 8... b5 { [%eval 0.1] } 9. b3 { [%eval 0.1] } ( 9. a4 ) 9... cxb3 { [%eval 0.13] } 10. axb3 { [%eval 0.23] } 10... Be7 { [%eval 0.25] very weak pawns [%csl Ga6,Gb5] } 11. Bb2 { [%eval 0.49] } 11... O-O { [%eval 0.42] } ( 11... Nb4 12. Ne5 Nbd5 ) 12. Rc1 { [%eval 0.13] } ( 12. Rd1 ) 12... Nb4 { [%eval 0.48] } 13. Ne5 { [%eval 0.45] [%cal Gg2a8] } 13... Nfd5 { [%eval 0.58] [%cal Gg2d5] } 14. Na3 { [%eval 0.5] [%cal Gb1a3,Ga3c2,Gc2b4] } 14... Be8 { [%eval 0.44] } 15. e4 { [%eval 0.56] } 15... Nb6 { [%eval 0.29] } 16. Nc2 { [%eval 0.43] } 16... a5 { [%eval 0.5] } 17. Nxb4 { [%eval 0.33] } 17... Bxb4 { [%eval 0.32] } ( 17... axb4 18. Rxa8 Nxa8 ) 18. Nc6 Bxc6 19. Rxc6 a4 *
[Event "Catalan: Open Catalan, Open Defense (immediate c5)"]
[Site "https://lichess.org/study/OAlZZKi1/eqrEA4pe"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.06.09"]
[UTCTime "01:29:36"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 ( 6... cxd4 7. Nxd4 Bc5 { attacking the knight twice } 8. Qa4+ { forcing Qd2, Bd2 and Nd2 allows immediate recapture of the pawn and Nc6 loses the game. } 8... Qd7 9. Nb5 O-O 10. Qxc4 Qe7 11. b4 Bb6 12. N5c3 { simply retreat your knight. gain control of the open file and develop the rest of your pieces, the catalan bishop is extremely strong now. } ) 7. Qa4 ( 7. dxc5 { computer move, just leads to an endgame with little winning chances } 7... Qxd1 8. Rxd1 Bxc5 9. Nbd2 c3 10. bxc3 ) 7... Bd7 8. Qxc4 b5 ( 8... Qb6 9. dxc5 Bxc5 10. Nc3 Be7 11. Be3 ) 9. Qd3 Rc8 10. dxc5 Bxc5 11. Nc3 b4 { annoying move, two good options [%cal Gc3b5,Gc3e4] } 12. Ne4 ( 12. Nb5 { [%cal Rb5d6] } 12... O-O 13. Nd6 ) 12... Nxe4 13. Qxe4 { still a very complex position. Black's pieces are sort of passive and white has not finished development yet. This just leads to an endgame after pieces are traded as there are no pawnbreaks and little attacking chances } *
[Event "Catalan: Open Catalan, Classical Line (a6, b5)"]
[Site "https://lichess.org/study/OAlZZKi1/1Lu4lWoX"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E06"]
[Opening "Catalan Opening: Closed"]
[UTCDate "2021.06.15"]
[UTCTime "06:50:53"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4 ( 8. a4 Bd7 9. Qxc4 Bc6 { same ideas as usuall [%cal Gc1g5,Gg5f6,Ge2e3,Gb1c3] } 10. Bg5 Bd5 11. Qc2 Be4 12. Qc1 h6 13. Bxf6 Bxf6 14. Rd1 a5 15. Nbd2 Bxf3 16. Bxf3 { maintains threat on b7 } 16... c6 17. Nc4 { the pawn cannot be taken because e3 would win the bishop } ) 8... b5 9. Qc2 Bb7 10. Bd2 Be4 ( 10... Nc6 11. e3 Nb4 12. Bxb4 Bxb4 13. a3 Bd6 14. Nbd2 Rc8 15. e4 { taking the center and threatening the fork } 15... Be7 16. e5 Nd7 17. b4 ) 11. Qc1 Bb7 { threatening the c7 pawn } 12. Bf4 Bd6 13. Nbd2 Bxf4 14. gxf4 Nbd7 15. Nb3 Rc8 16. Rd1 Qe8 { [%cal Ge2e3,Gc1c2,Ga1c1] } *
[Event "Catalan: Open Catalan, Modern Sharp Variation"]
[Site "https://lichess.org/study/OAlZZKi1/0YggGJ3L"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense, Modern Sharp Variation"]
[UTCDate "2021.04.07"]
[UTCTime "09:45:02"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... dxc4 { [%eval 0.48] } 5. Bg2 { [%eval 0.2] } 5... Nc6 { [%eval 0.45] } 6. Qa4 { [%eval 0.64] } 6... Bb4+ { [%eval 0.26] From this point on, memorize all the variations in this line to avoid making mistakes. I try to avoid this line because it is very hard to play and natural moves are often mistakes. } 7. Bd2 { [%eval 0.21] } 7... Nd5 { [%eval 0.21] } 8. Bxb4 { [%eval 0.52] } 8... Nxb4 { [%eval 0.88] } 9. O-O $6 { [%eval 0.34] Inaccuracy. a3 was best. this move is the mainline because it avoids having to sacrifice the queen } ( 9. a3 { This line is much sharper, I prefer to avoid a3 and just castle. Black has more winning chances here } 9... b5 10. Qxb5 Nc2+ 11. Kd2 Nxa1 ( 11... Bd7 12. Kxc2 { forced queen sac, very hard to play for white. I would avoid this line unless you want to do some serious prep } 12... Nxd4+ { [%csl Gf3] } 13. Nxd4 Bxb5 14. Nxb5 Rb8 15. Bc6+ Kf8 16. N1c3 ( 16. Rd1 { engine prefers this } 16... Qf6 17. N1c3 Qxf2 ( 17... e5 ) 18. Rd7 g6 ) 16... Rb6 17. Rhd1 Qb8 18. Bf3 ) 12. Qxc6+ Bd7 13. Qxc4 c5 14. Qa2 Qa5+ 15. Nc3 cxd4 16. Nxd4 Rd8 17. Rxa1 ) ( 9. Nc3 Bd7 10. O-O a5 11. Qd1 Nd5 12. e3 ) 9... Rb8 { [%eval 0.5] } 10. Na3 { [%eval 0.44] } 10... O-O { [%eval 0.37] } 11. Qb5 { [%eval 0.5] } 11... b6 { [%eval 0.37] } 12. Qxc4 { [%eval 0.37] } 12... Ba6 { [%eval 0.24] } 13. Nb5 { [%eval 0.29] } 13... Qd5 { [%eval 0.32] } 14. Qxd5 { [%eval 0.37] } 14... Nxd5 { [%eval 0.45] } 15. a4 { [%eval 0.5] } *
[Event "Catalan: Open Catalan, Qa4+"]
[Site "https://lichess.org/study/OAlZZKi1/pKgPyld3"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "D30"]
[Opening "Queen's Gambit Declined"]
[UTCDate "2021.04.07"]
[UTCTime "09:46:47"]
[Variant "Standard"]

1. d4 { [%eval 0.0] Warning: This line is pretty bad for white and throws away all advantage + gives black the initiative } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... dxc4 { [%eval 0.48] } 5. Qa4+ $6 { [%eval -0.08] Inaccuracy. Bg2 was best. Popular move for people new to the catalan, never play this move, it throws away all advantage as white and wastes too much time. } ( 5. Bg2 c5 6. O-O Be7 7. dxc5 O-O 8. Qc2 Bxc5 9. Qxc4 Qd5 ) 5... Nbd7 { [%eval 0.0] } 6. Bg2 { [%eval -0.01] } 6... a6 { [%eval 0.0] } 7. Qxc4 { [%eval -0.28] } 7... b5 8. Qc6 ( 8. Qc2 Bb7 9. O-O c5 ) 8... Rb8 9. Bf4 Nd5 10. Bg5 Be7 11. Bxe7 Qxe7 12. Nc3 Nb4 13. Qxc7 Nc2+ 14. Kd1 Nxa1 15. Ne5 O-O 16. Nc6 Qe8 17. Nxb8 Nxb8 18. Qxb8 *
[Event "Catalan: Open Catalan, b5 c6"]
[Site "https://lichess.org/study/OAlZZKi1/8q4DTgUz"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.03.31"]
[UTCTime "19:12:15"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. Nf3 { [%eval 0.13] } 2... e6 { [%eval 0.0] } 3. c4 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... dxc4 { [%eval 0.48] } 5. Bg2 { [%eval 0.2] } 5... b5 $6 { [%eval 0.76] Inaccuracy. Be7 was best. } ( 5... Be7 6. Qa4+ c6 7. Qxc4 O-O 8. O-O b5 9. Qc2 Bb7 10. Rd1 ) 6. a4 { [%eval 0.71] } 6... c6 { [%eval 1.14] } 7. Ne5 { [%eval 0.62] } 7... Nd5 { [%eval 0.96] } ( 7... Bb4+ 8. Nc3 Nd5 ) 8. O-O { [%eval 0.92] } 8... Bb7 { [%eval 1.18] } 9. e4 { [%eval 0.8] } 9... Nf6 { [%eval 0.81] } 10. b3 { [%eval 0.86] undermining the pawn chain } ( 10. Nc3 a6 11. d5 cxd5 12. exd5 Nxd5 13. Qh5 { Beware, this line is very sharp and involves lots of sacrifices } 13... g6 14. Nxg6 fxg6 15. Qe5 Qf6 16. Qxf6 Nxf6 17. Bxb7 Ra7 18. axb5 Rxb7 19. bxa6 Nxa6 20. Rxa6 ) 10... cxb3 { [%eval 1.05] } ( 10... Nfd7 11. Nxd7 Nxd7 12. axb5 ( 12. bxc4 bxc4 { black is temporarily up material but their queenside is frozen and weak. White will pick the pawns back up very easily and use target the queenside. } ) 12... cxb5 13. bxc4 bxc4 14. Na3 { [%csl Gc4][%cal Ga3c4] } 14... Rc8 ( 14... c3 15. Qb3 Ba6 16. Nb5 Bxb5 17. Qxb5 { [%csl Gd4,Re6][%cal Gd4d5] } ) 15. Rb1 Ba8 16. Qa4 ) ( 10... Nbd7 11. bxc4 Nxe5 12. dxe5 Qxd1 13. Rxd1 Ng4 14. h3 Nxe5 15. cxb5 cxb5 16. axb5 a6 17. Bf1 { [%cal Gf1b5,Yb5e8] } ) 11. axb5 { [%eval 0.76] } 11... cxb5 { [%eval 0.81] } 12. Qxb3 { [%eval 0.74] [%cal Gb3b5] } 12... a6 { [%eval 0.35] } 13. d5 $18 exd5 ( 13... Qb6 14. Nc4 Qd4 15. Nba3 { [%cal Gb3b7] } 15... Bxa3 16. Nxa3 O-O 17. Bb2 Qb6 18. Nc4 Qc7 19. Na5 ) ( 13... Bd6 14. dxe6 fxe6 15. Rd1 Qe7 16. Nd3 $1 { [%cal Ge4e5,Be5d6,Be5f6] } 16... e5 $6 17. Nxe5 $1 Bxe5 ( 17... Qxe5 18. Bf4 { [%cal Gf4d6] } ) 18. Ba3 { [%cal Gb3e6] } ) 14. exd5 Bxd5 15. Qe3 { [%csl Bd5][%cal Gf1d1,Bg2d5,Yd1d8] } 15... Qe7 16. Ba3 Qe6 17. Re1 $18 { [%csl Be6][%cal Ge3c3,Be1e6] } 17... b4 18. Bxd5 Nxd5 19. Qc1 { [%cal Ge1e8] } *
[Event "Catalan: Open Catalan, a6 b5"]
[Site "https://lichess.org/study/OAlZZKi1/YsUFkcrB"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.04.24"]
[UTCTime "16:38:52"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 a6 6. O-O b5 7. Ne5 Nd5 { closing the diagonal } 8. a4 Bb7 9. b3 { black may be up a pawn but their queenside is frozen and the pawns will be won back quickly } 9... c3 10. e4 b4 11. exd5 Bxd5 12. Qh5 g6 13. Qh3 { White is up a piece temporarily but will probably have to sacrifice a knight to stop the past C pawn } *
[Event "Catalan: Open Catalan, trap"]
[Site "https://lichess.org/study/OAlZZKi1/J7bnIcdU"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "D30"]
[Opening "Queen's Gambit Declined"]
[UTCDate "2021.03.25"]
[UTCTime "06:27:02"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval 0.13] } 4... Nbd7 { [%eval 0.4] } ( 4... dxc4 5. Bg2 b5 6. a4 c6 7. Ne5 Nd5 8. O-O Bb7 9. axb5 cxb5 10. b3 cxb3 11. Qxb3 a6 12. e4 Nb6 ( 12... Nf6 13. d5 exd5 14. exd5 Bxd5 15. Qe3 Qe7 16. Ba3 b4 17. Bxb4 Qe6 18. Bxf8 Bxg2 19. Bxg7 Nd5 20. Qb3 Bxf1 21. Bxh8 Qh3 ( 21... Bh3 22. Nd2 Nd7 23. Nxd7 Qxd7 24. Rd1 ( 24. Re1+ ) ( 24. Ne4 Bf5 25. Qxd5 Qxd5 26. Nf6+ ) ) ) 13. d5 Bc5 14. Qc3 Qc8 15. dxe6 fxe6 16. Qf3 Rf8 17. Qh5+ g6 18. Qxh7 ) 5. Bg2 { [%eval 0.28] } 5... dxc4 { [%eval 0.5] } 6. O-O { [%eval 0.4] } 6... b5 $4 { [%eval 2.2] Blunder. Be7 was best. This is common when playing against people unfamiliar with the Catalan, whenever b5 is played look for tactics involving the bishop on g2. } ( 6... Be7 7. Nbd2 b6 8. Ne5 Nxe5 9. dxe5 Nd5 10. Nxc4 O-O 11. Qc2 ) 7. Ne5 { [%eval 2.13] } 7... Rb8 $4 { [%eval 7.37] Blunder. Ba6 was best. } ( 7... Ba6 8. Bxa8 ( 8. Nc6 Qc8 ) ( 8. Nc3 Bd6 9. a4 b4 10. Nb5 Nxe5 11. Bxa8 Ned7 12. Bc6 ) 8... Qxa8 ) 8. Nc6 { [%eval 7.36] Queen is trapped, } 8... Bb7 { [%eval 7.35] } *
[Event "Catalan: Open Catalan, c5"]
[Site "https://lichess.org/study/OAlZZKi1/aXwGLigG"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "D30"]
[Opening "Queen's Gambit Declined"]
[UTCDate "2021.04.09"]
[UTCTime "03:01:50"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 ( 4... Be7 5. Bg2 O-O 6. O-O dxc4 7. Ne5 c5 8. dxc5 Qc7 9. Nxc4 Qxc5 ( 9... Rd8 { [%csl Gc2,Gb3,Ga4][%cal Gd1c2,Gc2b3,Gb3a4,Gd1b3,Gd1a4] } ) 10. b3 ) 5. Bg2 dxc4 6. O-O c5 { memorize this line, it is important to not make any inaccuracies here to keep a slight advantage } 7. Na3 Nb6 { remember this tactic [%cal Ga3c4,Gb6c4,Gd1a4,Gc8d7,Ga4c4] } 8. Nxc4 Nxc4 9. Qa4+ Bd7 10. Qxc4 b5 11. Qc2 ( 11. Qc3 { [%csl Gd4][%cal Gc3d4] } 11... Rc8 ( 11... Nd5 12. Qe1 cxd4 13. Nxd4 ) 12. Ne5 Bd6 ( 12... c4 13. Bb7 Rc7 14. Ba6 { [%cal Ge5d7,Ga6b5] } ) 13. Bf4 ) 11... Rc8 12. dxc5 ( 12. Ne5 ) 12... Bxc5 13. Qb3 O-O *
[Event "Catalan: Open Catalan, immediate c5"]
[Site "https://lichess.org/study/OAlZZKi1/E6m4vG7z"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.06.27"]
[UTCTime "06:38:02"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 b5 ( 8... cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4 11. Qxd4 Bc5 12. Qh4 O-O 13. Bxb7 Rb8 { [%cal Gb7f3,Gb7g2] } ) 9. Qc3 ( 9. Qd3 ) 9... b4 10. Qd3 Rc8 11. dxc5 Bxc5 12. Be3 Bxe3 13. Qxe3 O-O 14. Nbd2 Qe7 { there pawns are future targets [%csl Rb4,Ra7][%cal Gd2c4,Ga1c1,Gf1d1] } *
[Event "Catalan: Open Catalan, Nc6"]
[Site "https://lichess.org/study/OAlZZKi1/VwPfkgAK"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.04.14"]
[UTCTime "20:07:30"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Nc6 6. Qa4 ( 6. Qc2 { mistake } 6... b5 ( 6... Nxd4 7. Nxd4 Qxd4 ) 7. Ne5 Nb4 8. Qd2 Nbd5 9. O-O { black can keep the pawn } ) 6... Bd6 ( 6... Bb4+ 7. Bd2 Nd5 8. Bxb4 Nxb4 9. O-O ) 7. Nbd2 O-O 8. O-O Qe8 9. Qxc4 *
[Event "Catalan: Open Catalan, exchange sacrifice variation"]
[Site "https://lichess.org/study/OAlZZKi1/eYeuoqUn"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.06.15"]
[UTCTime "06:09:46"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c6 6. Ne5 Bb4+ 7. Bd2 Be7 8. e3 b5 ( 8... O-O 9. Nxc4 { [%cal Gb1c3,Ge1g1,Gd1c2] } ) 9. Nxc6 Nxc6 10. Bxc6+ Bd7 11. Bxa8 Qxa8 12. f3 { VERY IMPORTANT MOVE!!! Black chooses to sacrifice the exchange for a possible kingside attack on white's weak lightsquares } 12... e5 13. O-O { at this point, black does not have much attacking chances. Black will either try to bail into an endgame and hope to draw or continue to attack and complicate the position. No matter what black does, white should try to trade off pieces and win the endgame up an exchage. } *
[Event "Catalan: Open Catalan, Bb4+ (a5)"]
[Site "https://lichess.org/study/OAlZZKi1/I4wcehBp"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.04.09"]
[UTCTime "03:21:53"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.17] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.2] } 4. g3 { [%eval 0.13] } 4... dxc4 { [%eval 0.48] } ( 4... Bb4+ 5. Bd2 a5 6. Bg2 O-O 7. O-O dxc4 8. Bg5 h6 9. Bxf6 Qxf6 10. Qc2 ) 5. Bg2 { [%eval 0.2] } 5... Bb4+ { [%eval 0.28] } 6. Bd2 { [%eval 0.29] } 6... a5 { [%eval 0.49] } 7. Qc2 { [%eval 0.39] } ( 7. Qa4+ { rare trick for bullet } 7... Nc6 8. Bxb4 ) 7... Bxd2+ { [%eval 0.36] } 8. Qxd2 { [%eval 0.42] } 8... c6 { [%eval 0.3] } 9. a4 { [%eval 0.53] } 9... Ne4 { [%eval 0.66] } 10. Qc2 $6 { [%eval 0.11] Inaccuracy. Qf4 was best. } ( 10. Qf4 Nd6 11. Na3 O-O 12. Ne5 Na6 13. O-O Nb4 14. Rfd1 f6 15. Nexc4 Nxc4 16. Nxc4 b6 ) 10... Nd6 { [%eval 0.11] } 11. O-O { [%eval 0.1] } 11... Na6 { [%eval 0.15] } 12. Ne5 { [%eval 0.14] } 12... Nb4 { [%eval 0.24] } 13. Qc1 { [%eval 0.16] } 13... O-O { [%eval 0.49] } 14. Na3 { [%eval 0.3] } 14... Ra6 { [%eval 0.32] } 15. Naxc4 { [%eval 0.58] } 15... Nxc4 { [%eval 0.42] } 16. Qxc4 { [%eval 0.44] } 16... f6 { [%eval 0.37] } 17. Nf3 { [%eval 0.43] } 17... Qe7 { [%eval 0.47] } *
[Event "Catalan: Open Catalan, Bb4+ (c5)"]
[Site "https://lichess.org/study/OAlZZKi1/BsylNP9i"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E04"]
[Opening "Catalan Opening: Open Defense"]
[UTCDate "2021.05.08"]
[UTCTime "02:11:42"]
[Variant "Standard"]

{ in this line, i recommend avoiding theory and taking your opponent out of book as fast as you can,. } 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 ( 6. Nbd2 b5 ( 6... c3 7. bxc3 Bxc3 8. Rb1 ) 7. a4 c6 8. O-O O-O ) 6... c5 { Out of all weapons against the catalan, I hate this one the most. The mainline leads to an uncastled endgame where black has a far easier game. I would reccoment prepping your own sidelines to avoid this } 7. Bxb4 ( 7. O-O O-O 8. Qc1 ( 8. dxc5 Bxc5 9. Qc2 Nbd7 10. Qxc4 { Perhaps the simplist way to deal with this line and avoid bad positions } ) 8... b5 9. a4 Bb7 10. axb5 a6 11. bxa6 Rxa6 12. Rxa6 Bxa6 13. dxc5 Bxc5 14. Nc3 Nbd7 ) 7... cxb4 8. Ne5 O-O 9. Nxc4 ( 9. e3 Nc6 10. Nxc4 e5 { same position } ) 9... Nc6 10. e3 e5 11. d5 b5 12. dxc6 Qxd1+ 13. Kxd1 bxc4 14. a3 Bg4+ 15. Kc1 { unpleasant position for white [%cal Ra8b8,Rf8c8,Rb4b3,Rc4c3] } *
[Event "Catalan: Open Catalan, Nf3"]
[Site "https://lichess.org/study/OAlZZKi1/8iKG67QX"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "D30"]
[Opening "Queen's Gambit Declined"]
[UTCDate "2021.04.15"]
[UTCTime "16:23:38"]
[Variant "Standard"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 dxc4 6. O-O Rb8 { Moving rook off the diagonal and preparing b5, white then prevents e5 } 7. a4 a6 8. a5 *
[Event "Catalan Theory: open,"]
[Site "https://lichess.org/study/OAlZZKi1/P0uII4ux"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/Derrick1Rose"]
[ECO "E06"]
[Opening "Catalan Opening: Closed"]
[UTCDate "2021.04.14"]
[UTCTime "20:23:10"]
[Variant "Standard"]

1. d4 { [%eval 0.0] } 1... d5 { [%eval 0.17] } 2. c4 { [%eval 0.0] } 2... e6 { [%eval 0.31] [%csl Gg1][%cal Gg1g2,Gg2g1] } 3. Nf3 { [%eval 0.0] } 3... Nf6 { [%eval 0.2] } 4. g3 { [%eval 0.13] } 4... Be7 { [%eval 0.33] } 5. Bg2 { [%eval 0.13] } 5... O-O { [%eval 0.28] } 6. O-O { [%eval 0.13] } 6... dxc4 { [%eval 0.28] } 7. Qc2 { [%eval 0.13] } 7... b5 { [%eval 0.05] } 8. a4 { [%eval 0.43] } 8... b4 { [%eval 0.45] } 9. Nfd2 { [%eval 0.32] } 9... Nd5 { [%eval 0.63] } ( 9... c6 10. Nxc4 Qxd4 11. Rd1 Qc5 12. Be3 Qh5 13. Nbd2 Ng4 14. Nf3 Nxe3 15. Nxe3 a5 16. Nd4 Ba6 17. Rac1 Rc8 18. Bf3 Qg6 19. Be4 Qh5 20. Qd2 ) 10. Nxc4 { [%eval 0.56] } 10... c5 { [%eval 0.62] } 11. dxc5 { [%eval 0.54] } 11... Ba6 { [%eval 0.94] } 12. Ne3 { [%eval 0.91] } 12... Nd7 { [%eval 0.68] } 13. Nxd5 { [%eval 1.13] } 13... exd5 { [%eval 0.94] } 14. c6 { [%eval 0.76] } 14... Rc8 { [%eval 0.89] } 15. Bf4 { [%eval 0.09] } ( 15. Rd1 $6 { Inaccuracy. Bf4 was best. } ) 15... Nc5 16. Rd1 d4 *