[Event "Chocen"] [Site "Chocen"] [Date "1950.??.??"] [Round "?"] [White "F Leitner"] [Black "Jiri Vesely"] [Result "0-1"] [ECO "C55"] [Annotator "Stockfish 10 64 (6s)"] [PlyCount "76"] [EventDate "1950.??.??"] {Two Knights Defense} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O {This move is rare. In fact when it's not even listed in Modern Chess Openings, though it appears quite a few time in the database.} Nxe4 {The most often seen move in the database is 4...c5, but why not play this...it grabs a P plus it entices white into playing not the correct 5.Bb5 Be7 6,Bxc6 dxc6 7.Re1 followed by Nxe5, but rather to fall into a trap with 5.Re1.} 5. Re1 d5 {Now 6.d4 may look inviting but it is met by Nxf2! 7.Nxe5 (Not 7.Kxf2 dxc4 8.Nxe5 Qxd4+ with the much superior position.) 7...Be6! And black comes out a P ahead.} 6. Bb5 Bc5 {Black has already established a huge advantage owing to his control of the center and better development.} 7. d4 exd4 8. Nxd4 {Another opening mistake that allows black to build up pressure on f2. Best was 8.Nbd2 but even then black is much better.} Qf6 9. Be3 O-O 10. Bxc6 bxc6 11. c3 Ba6 12. f3 {Better was the developing move 12.Nd2} Ng5 13. Nd2 Rfe8 14. N2b3 Bd6 15. Qd2 Ne6 {Vesely isn't concerned with the P...he is going for the attack.} 16. Nxc6 Nf4 17. Nb4 {Attacking the d-Pawn and seemingly forcing black's next move. Vesely's next move is OK, but even better would have been 17...Ne2+ as it would have reulting in a material advantage, but calculating the correct sequence OTB is beyond most players' ability.} Bc4 18. g3 Ng6 19. Kg2 {WHite's f-Pawn is still a concern.} Ne5 20. Bf4 {With his next move black missed a tactical shot that assures him of the advantage. 20...Nxf3!! 21.Kf3 g5 win back the piece because the B is pinned. His next move lets white right back in the game.} c6 21. Bxe5 Bxe5 22. Na5 {Black's attack has disappeared and now he even loes a P. } c5 23. Nxd5 Bxd5 24. Qxd5 Rad8 25. Qe4 Rd2+ 26. Re2 Qd8 {After this white should have gotten the advantage. Correct was 26...Rxe2+ and only then ...Qd8. In that case his B vs N and control of the center files offsets white's extra P. On his next move white missed his chance to trade down to an even ending with 27.Rxd2 Qxd2+ 28.Kh1 and black has to do something about his pinned B. So, 28...f5 29.Nc4 fxe4 30.Nxd2} 27. Nc4 Rxe2+ 28. Qxe2 Bxc3 29. Qc2 {Offering a Q trade with 29.Qd1 was better.} Bf6 30. Rd1 Qe7 31. Rd2 Bd4 32. b3 {Another poor decision. 32.b4! Qe1 33.Qd1 trading Qs was correct. A draw would then be a likely outcome.} Qe1 {With the obvious threat of ...Qg1+ followed by ... Re6. White should still trade Qs. After 33.Qd1 Qxd1 34.Rxd1 Re2+ followed by ...Rxa2 with an extra P, Bvs N and R on the 2nd rank, black is better, but white has drawing chances.} 33. Qd3 Qg1+ 34. Kh3 Re6 {White' K is now cornered. There's a way out of immediate disaster though with 35.f4 Rh6+ and after ... Rxh2 and the trade of Rs white would be a P down on the K-side and have good drawing chances.} 35. Qf5 {This is a real blooper that loses at once.} Qf1+ 36. Kg4 Rg6+ 37. Kh5 Rh6+ 38. Kg4 Qh3+ {Now 39.Kd5 Rh5+ mates next move and 39.Kf4 Rf6 loses the Q.} 0-1

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