[Event "?"]
[Site "Zandvoort"]
[Date "1936.??.??"]
[Round "?"]
[White "Euwe"]
[Black "Maroczy"]
[Result "1-0"]
[Annotator "Ramkrishna Kashelkar"]

{ Queen's Gambit Declined
"The man who never missed a combination." That was how Alekhine described the Dutch Grandmaster Dr. Max Euwe. In 1935, Euwe became the World Champion after he defeated Alekhine in their match. Dr. Euwe was the President of the World Chess Federation (F I D E) from 1970 to 1978. Though he lost his title to Alekhine in 1937, he became famous for his writings. His well-known book 'Judgment and Planning in Chess' is regarded as on of the standard manuals for developing players. } 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. a3 { The well-known "struggle for the tempo." After 8. Bd3 dc4, Black gains a tempo, and hence white delays the development of his Bishop on f1. } 8... h6 9. Bf4 a6 10. h3 { the struggle for the tempo continues. } 10... dxc4 { Black could have continued the struggle with 10...Re8 when 11 Qc2 is best. } 11. Bxc4 b5 12. Ba2 Bb7 { (12... c5 is less good because of 13. d5) } 13. O-O { (13. b4 allows counterplay with 13... a5) } 13... c5 14. Ne5 c4 { This releases the tension in the centre. A dubious idea in this position. This gives Black a queenside majority, which in the event of an ending might decide the game in his favour. But white gets a free hand in the centre which will prove dangerous in the middlegame. } 15. Bb1 Re8 16. Qe2 Nxe5 $2 { Probably the decisive mistake, since white's attack becomes more powerful than ever. This move allows white to put a pawn on e5, a very important pre-requisite for an attack, without much grave a weakness. Had white been forced to push e4-e5, his pawn at d4 becomes a terrible weakness. } 17. dxe5 { Now a central file is opened up which, white is better placed to benefit from. } 17... Nh7 { Forced. Bad would be (17... Nd5 18. Qc2) (17... Nd7 18. Qg4 Kh8 19. Qh5 when Qf7 and Bh6 are both threatened.) } 18. Qh5 { threatening to win a pawn by Bh7+ and Qf7. Also possible was (18. Qg4 Bg5 19.Rcd1 {And then Bg3 and f4.) } 18... Nf8 19. Rcd1 Qc7 20. Bxh6 $3 { This sacrifice is based on positional considerations. White obtains only two pawns for the piece but Black's king is exposed and white enjoys a long term initiative. } 20... gxh6 { forced. Declining the piece with (20... g6 21. Qg4 Qxe5 22. e4!leaves white with a powerful attack.) } 21. Rd4 $1 { The correct way. Wrong would be (21. Qxh6 Rad8 when black is out of danger.) } 21... f5 { If (21... Bg5 22. h4 Qxe5 23. hxg5 hxg5 24. Rg4 {the attack still continues.) } 22. exf6 Bxf6 23. Rg4+ Bg7 24. Qxh6 { this is the position Euwe had in his mind when he sacrificed the bishop. The evaluation of the position depends on the comparative mobility of the pieces. Black's Knight on e8 and Bishop on g7 can not move and he'll require some time to mobilize both his rooks. } 24... Rad8 25. Ne2 $1 { beautiful! The knight is heading for h5. } 25... e5 { In order to drive the white queen with ...Rd6 or ...Re6 } 26. Ng3 Re6 { (26...Rd6?? 27. Rxg7+ Qxg7 28. Qxg7+ Kxg7 29. Nf5+) } 27. Qh4 { Now black's position appears well secured. He has effectively mobilized his rooks and apparently fend off the attack. But Euwe has something up his sleeve. } 27... Rd3 { A difficult situation. } ( 27... Qe7 $4 28. Rxg7+ Kxg7 29. Nf5+ ) ( 27... Rdd6 28. Nf5 Ng6 29. Qg3 Rb6 30. h4 $1 { and the threat of h5 is decisive. } ) ( 27... e4 28. Nxe4 Bxe4 29. Bxe4 Rxe4 30. Rxe4 Bxb2 31. f4 c3 ( 31... Rd7 32. Rf3 Rh7 33. Rg3+ Bg7 34. Re7 $1 Qb6 35. Qg5 Ne6 36. Qg6 $18 ) 32. Qg5+ Kf7 33. f5 c2 34. f6 Ne6 35. Qh5+ Kf8 36. Rxe6 c1=Q 37. Qh8+ Kf7 38. Re7+ Qxe7 39. Qg7+ Ke6 40. Qxe7+ Kd5 41. Qxd8+ $18 ) 28. Nf5 Ng6 29. Qh5 ( 29. Rxg6 $2 Rxg6 30. Ne7+ Qxe7 $1 31. Qxe7 Rxg2+ 32. Kh1 Rxf2+ 33. Qxb7 Rxf1+ $19 ) 29... Qf7 30. h4 $1 { Decisive! Euwe must have seen this many moves earlier. When the attack with only pieces comes to a standstill, White manages to stimulate the attack with the help of the h-pawn. The threat being Qg5 and h5 winning a piece, which is very difficult to parry. } 30... Bf8 31. Nh6+ Bxh6 32. Qxh6 Qh7 33. Qg5 Kf7 34. Bxd3 cxd3 35. Qf5+ { Here Black resigned as Black's position is hopeless after 35... Ke7 36. h5 Nf8 37. Qxh7+ Nxh7 38. Rg7+ Or 35... Rf6 36. Qd7+ Kg8 37. Qe8+ Kg7 38. Qe7+ Rf7 39. Qxe5+ Kf8 40. Qd6+ Kg7 41. Qxd3 
Dr. Euwe justly received Brilliancy Prize for this game. } 1-0