Event: Round 4: Rivera, Daniel - Knaak, Rainer
Site: https://lichess.org/broadcast/fide-world-senior-championship-2025--open-65/round-4/9mgBGVnn/hohzorm7
Date: 2025-10-24
White: Rivera, Daniel
WhiteTitle: IM
WhiteElo: 2193
Black: Knaak, Rainer
BlackTitle: GM
BlackElo: 2429
Result: 1/2-1/2
ECO: C70
Opening: Ruy Lopez: Morphy Defense, Schliemann Defense Deferred
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:29:05] } 1... e5 { [%eval 0.22] [%clk 1:30:40] } 2. Nf3 { [%eval 0.13] [%clk 1:29:20] } 2... Nc6 { [%eval 0.21] [%clk 1:31:03] } 3. Bb5 { [%eval 0.15] [%clk 1:29:32] } 3... a6 { [%eval 0.21] [%clk 1:31:20] } 4. Ba4 { [%eval 0.11] [%clk 1:29:56] } 4... f5?! { [%eval 0.74] } { Inaccuracy. Nf6 was best. } { [%clk 1:31:37] } 5. d3?! { [%eval 0.14] } { Inaccuracy. d4 was best. } { [%clk 1:24:31] } 5... fxe4 { [%eval 0.29] [%clk 1:29:32] } 6. dxe4 { [%eval 0.16] [%clk 1:24:56] } 6... Nf6 { [%eval 0.22] [%clk 1:29:54] } 7. O-O { [%eval 0.12] [%clk 1:21:12] } 7... d6 { [%eval 0.24] [%clk 1:30:05] } 8. Bg5 { [%eval 0.24] [%clk 1:16:10] } 8... Be7 { [%eval 0.21] [%clk 1:29:51] } 9. Bxf6 { [%eval 0.3] [%clk 1:11:20] } 9... Bxf6 { [%eval 0.08] [%clk 1:29:38] } 10. Qd5 { [%eval 0.06] [%clk 1:10:47] } 10... Bd7 { [%eval 0.12] [%clk 1:29:00] } 11. Bb3 { [%eval 0.15] [%clk 1:10:02] } 11... Qe7 { [%eval 0.07] [%clk 1:28:58] } 12. Nc3 { [%eval 0.27] [%clk 1:07:57] } 12... O-O-O { [%eval 0.31] [%clk 0:53:27] } 13. Qd3 { [%eval 0.31] [%clk 1:04:13] } 13... Rdf8 { [%eval 0.73] [%clk 0:53:50] } 14. Bd5? { [%eval -0.79] } { Mistake. Nd5 was best. } { [%clk 0:54:45] } 14... g5?? { [%eval 1.79] } { Blunder. Nd4 was best. } { [%clk 0:51:09] } 15. b4?! { [%eval 0.94] } { Inaccuracy. Bxc6 was best. } { [%clk 0:53:00] } 15... g4?! { [%eval 1.72] } { Inaccuracy. Nd4 was best. } { [%clk 0:50:40] } 16. Bxc6 { [%eval 1.66] [%clk 0:45:09] } 16... Bxc6 { [%eval 1.61] [%clk 0:50:48] } 17. Nd2 { [%eval 1.73] [%clk 0:45:22] } 17... Bg5 { [%eval 2.18] [%clk 0:48:26] } 18. Nc4? { [%eval 0.94] } { Mistake. a4 was best. } { [%clk 0:42:59] } 18... Bf4? { [%eval 2.24] } { Mistake. b6 was best. } { [%clk 0:37:34] } 19. a4 { [%eval 2.08] [%clk 0:40:26] } 19... b5?? { [%eval 4.38] } { Blunder. Bxh2+ was best. } { [%clk 0:17:09] } 20. axb5 { [%eval 4.51] [%clk 0:38:18] } 20... axb5 { [%eval 4.38] [%clk 0:17:35] } 21. Na5 { [%eval 4.17] [%clk 0:03:30] } 21... Be8 { [%eval 4.22] [%clk 0:17:28] } 1/2-1/2