[Event "Winterwedstrijd V.A.S. 1920/21"] [Site "?"] [Date "1920.??.??"] [Round "?"] [White "Boedijn, J."] [Black "Weenink, H."] [Result "0-1"] [ECO "C82"] [Annotator "MJDonnelly"] [PlyCount "40"] [SourceVersionDate "2025.05.17"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 {The Open variation of the Ruy Lopez as opposed to the Closed variation with} (5... Be7 {Both have been played innumerable times over the years without exhausting the possibilities for either side.}) 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 ({The main allternative is} 9. Nbd2 {when one famous game went} Nc5 10. c3 g6 11. Qe2 Bg7 12. Nd4 Nxe5 13. f4 Nc4 14. f5 gxf5 15. Nxf5 Rg8 {and White soon won in Karpov-Korchnoi, W-ch Baguio City 1978.}) 9... Bc5 {targetting f2 can perhaps be regarded as Black's most active move but in reality the game is level as it is after} (9... Be7) 10. Qd3 (10. Nbd2 {featured in another Karpov-Korchnoi game from the 1978 W-ch when following} O-O 11. Bc2 Bf5 12. Nb3 Bg4 13. h3 Bh5 14. g4 Bg6 15. Bxe4 dxe4 16. Nxc5 exf3 17. Bf4 {White was better and went on to win.}) 10... O-O (10... Nxf2 {is not to be feared as White is better from the following exchanges} 11. Rxf2 Bxf2+ 12. Kxf2) 11. Nbd2 f5 {The most dynamic way to support the knight allowing for a certain acceptable looseness in Black's game.} (11... Nxd2 12. Bxd2 {is more solid but simplifies the game somewhat as in Smirin-Amin, W-chT Bursa 2010.}) (11... Nxf2 {is again better for White if accurately followed up. One example being Pilnik-Maderna, Mar del Plata International 1946.} 12. Rxf2 f6 $5 (12... Bxf2+ 13. Kxf2 f6 14. exf6 Qxf6 15. Kg1 $14 {Zielinski-Pokojowczyk, POL-chT Jachranka 1987.}) 13. Ne4 $2 Nxe5 14. Nxe5 Bxf2+ 15. Nxf2 fxe5 $11) 12. exf6 (12. Bc2 {has been played occasionally, for instance by Anand, but takes the pressure off d5.}) 12... Nxf6 13. Re1 {The most obvious move attacking the loose bishop. White has tried other continuations without causing major problems for Black.} (13. a4 Rb8 {Ivanchuk-Kamsky, Amber-rapid Monte Carlo 1995.}) (13. Ng5 Ne5 14. Qg3 Qd6 {Howell-Flear, Oakham schev 1994.}) (13. Bc2 Qd6 {Firouzja-Dominguez Perez, Saint Louis Blitz Lichess.org INT 2020.}) 13... Qd6 14. Nf1 Rae8 {Black is nicely developed and has secured d5, c5 and e6 with the queen on d6.} (14... Ng4 {was the odd continuation of Gregory-Staroske, W-ch M445 ICCF corr.1989 which went} 15. Rxe6 Qxe6 (15... Nxf2 $5) 16. Bxd5 Nxf2 17. Bxe6+ Kh8 18. Qe3 Bxe3 19. Bxe3 $18) 15. Ng3 (15. Bg5 {achieves nothing after} Ne4) 15... Ng4 {A move that initiates great complications.} 16. Rxe6 {surprisingly this counter does not win outright.} (16. Be3 {is no use as Black is better after} Bxe3 17. fxe3 Nce5 ({but not} 17... Nxh2 {which is refuted by central play via} 18. Kxh2 Rf6 19. e4 Rh6+ 20. Kg1 Qxg3 21. exd5 $18) 18. Nxe5 Nxe5) 16... Bxf2+ 17. Kf1 (17. Kh1 {is stronger as after} Rxe6 18. Qxd5 Qxd5 $5 {counter-intuitive but playable} ({instead poor is} 18... Rff6 {since White win by} 19. Qxd6 ({or by} 19. Qh5 Kh8 20. Bg5 $18) 19... cxd6 20. Ng5 $18) 19. Bxd5 Rfe8 20. Ng5 Nd8 {and remarkably the game is level.}) 17... Bd4 $5 {An astounding idea but flawed.} 18. Nf5 $2 {Bamboozled White goes downhill rapidly.} (18. Rxe8 {is winning as} Nxh2+ {is refuted by a careful king walk} 19. Ke2 Rxe8+ 20. Ne4 Nxf3 (20... Rxe4+ $2 21. Qxe4) 21. Kd1 {leaving several of the black pieces hanging and the White king safe.} (21. gxf3 {is also good} Kh8 22. Bxd5 (22. cxd4 $2 {provides Black with a strong attack following} dxe4 23. fxe4 Qh2+) 22... Qxd5 23. Be3 $18)) (18. cxd4 {only gives some advantage due to} Rxe6 (18... Nxh2+ {doesn't quite work} 19. Kg1 ({not} 19. Kf2 $2 Rxe6 $19) 19... Nxf3+ 20. Qxf3 Rxf3 ({or if} 20... Rxe6 21. Qxd5 Qxd5 22. Bxd5 Nxd4 23. Be3 Rd8 24. Bxe6+ Nxe6 $18) 21. Rxd6 Rxb3 22. Rxc6 $18) ({similar is} 18... Qxe6 19. Kg1 $14) 19. Kg1 $14 {as White is safe and has the two bishops.}) (18. Qxd4 {is level after} Nxh2+ 19. Kf2 (19. Kg1 {loses to} Nxf3+ 20. gxf3 Qxg3+ $19) 19... Nxd4 (19... Rxe6 20. Qxd5 $18) 20. Rxd6 Ng4+ 21. Kg1 Nxb3 $11) (18. Rxd6 {allows mate in one by} Nxh2#) 18... Qxe6 19. h3 {there is nothing better.} (19. N5xd4 Qe1#) (19. cxd4 Rxf5 $19) (19. N3xd4 Qe1#) 19... Qe1+ 20. Nxe1 Nh2# {There are some very complex lines after 17...Bd4!? hence it's no wonder White went wrong.} 0-1