Paul Brown vs Sheridon Monson (1975)

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Paul Brown vs Sheridon Monson
corr (1975) (correspondence), ?
King's Gambit: Falkbeer Countergambit. Nimzowitsch-Marshall Countergambit (C31) · 0-1

ANALYSIS [x]

FEN COPIED

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Mar-20-07		YouRang: This game had plenty of errors, and both sides had winning chances. Still, it's an interesting to study for those of us who are error prone ourselves. It first fell apart for white at move 9 (diagram:white to move): click for larger view On move 8, white attacked the bishop with <8. d4>, and black surprisingly played <8...O-O>. White might well have taken the bishop with 9. dxc5, but apparently was worried about 9...Qxd1 10. Kxd1 Nf2+ 11. Ke1 Nxh1, and black has (for now) won the exchange and white cannot castle. However, not being able to castle isn't as bad with the queens off, and the knight on h1 should be trapped and won to even up the material. Alternatively, white could have safely developed with Nf3. But white played <9. Bf4?>, which should have been the losing move because of the nice tactic it sets up: <9...Nxd4! 10. cxd4 Bxd4> (diagram:white to move) click for larger view In exchange for a knight, black has won 2 pawns and has at least a couple direct threats (...Bxb2 and ...Nf2). Black is poised to activate his queen at b6, his light-square bishop at d6 or f5, and rooks soon afterwards on the open c and d files. White has barely done any development. Furthermore, white's reply was hardly the best, <11. Nf3?> allowing Bxb2 and the rook to follow. Inexplicably, black opted for <11...Bf2+? 12. Ke2 Qb6 13. Qb3>, and black's compensation for the knight sac has dried up. It continued, <13...Qc6 14. Nbd2 Be6 15. Qc3> (diagram:black to move) click for larger view Here, black chose <15...Qb5?> (15. Qb6 to support the bishop and attack b2 is better). Now, <16. Qd3 Qb4?> and now white should win with 17. Qe4, threatening h3 and winning the bishop or knight. Black may try to hang on by trading off material, (e.g. 17...Qb5+ 18. Kd1 Qb6 19. h3 Ne3+ 20. Bxe3 Bxe3 21. Bd3 [threat: Qxh7#] g6 22. Ke2 Bxd2 Nxd2), but now black's development advantage is gone, and white is simply up a piece with an easy win.) But white impatiently played <17. h3?>, giving black time to bring his rook in with tempo with <17...Rad8> (diagram:white to move) click for larger view Here, white needs 18. Qc2 to save the queen and guard against ...Bc4+, but opted for the now-too-late <18. Qe4??>, and black alertly spotted the quick win, <18...Qxe4 19. Nxe4 Bc4#>.

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