C50 Hungarian Defence and Giuoco Pianissimo (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d3 O-O 6.Bg5 d6 7.Nc3)

The game below was played in a team match called Remedy for OCD - BtDW. The match consisted of 20 boards and it was played between Blade, The Daywalker and Obsessive Chess Disorder. I played on board 1 for OCD and this win was really important one to get us a bit closer to the win of the match. The final score of the match was 17.5 - 22.5 in favor of Obsessive Chess Disorder!

This game started with both players playing quite well until my opponent played 7...Nd4, which is a huge blunder, after which I should have a winning advantage, at least according to Stockfish in this after the game analysis. However, none of that actually matters if you do not know how to take full advantage of the mistakes that your opponent makes.

I showed poor realization skills, because only a few moves later I played foolishly 12.Qf3 instead of just playing 12.Bxe6 and I would have had an easy win. I had to make it difficult for myself by playing 12.Qf3, after which the likely result of the game was a draw and when I did end up playing Bxe6, it was no longer a strong move.

With the move 17.d4, I completely lost any advantage I had previously gained. Then on move 19, my opponent made a small mistake, but as I did not play accurately, the position evened out again with the move 20.Be3. In order for me to take advantage of the mistake, I needed to play 20.dxc5, but even then it would be likely that the game would have gone towards a draw.

After the reply 20...Rc8, the game started to go downhill for my opponent again and the rest of the game I played reasonably well, so that despite of the small mistakes I made, I was able to keep the advantage on my side. The final nail in the coffin was the move 26...Qc1+, after that the game was completely lost for peterkp99.

[Event "Remedy for OCD - BtDW - Board 1"] [Site "Chess.com"] [Date "2016.01.23"] [Round "?"] [White "Vierjoki, Timo"] [Black "peterkp99"] [Result "1-0"] [ECO "C50"] [WhiteElo "1868"] [BlackElo "1764"] [Annotator "Stockfish 8 64 POPCNT (30s)"] [PlyCount "59"] [EventDate "2016.??.??"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 O-O 6. Bg5 d6 7. Nc3 {C50 Hungarian Defence and Giuoco Pianissimo} Nd4 8. Nxd4 (8. Bxf6 Qxf6 9. Nd5 Qg6 10. Ne7+ Kh8 11. Nxg6+ fxg6 12. Nxd4 exd4 13. a3 Rf4 14. Re1 Bg4 15. Qd2 Raf8 16. b4 Rxf2 17. Qg5 Bb6 18. e5 c5 19. exd6 Bd8 20. Qxc5 Be2 21. d7 Bb6 22. Qd6 Bxd3 {Ramirez,L-Gonzalez,A Ciudad del Este 2015 0-1}) 8... Bxd4 9. Nd5 (9. h3 Bxc3 10. bxc3 c6 11. Qf3 Qe8 12. Bxf6 gxf6 13. Qxf6 Qd8 14. Qf3 Qa5 15. d4 exd4 16. cxd4 c5 17. Qg3+ Kh8 18. Qxd6 Rd8 19. Qe5+ Kg8 20. dxc5 Qa4 21. Qg5+ Kh8 22. Qxd8+ Kg7 23. Qd4+ Kg8 {Balsai,N-Simon,P (2085) Heves 2000 1-0 (33)}) 9... Be6 $146 (9... h6 10. Nxf6+ gxf6 11. Bxh6 Re8 12. Qh5 Re7 13. Qg6+ Kh8 14. Qg7# {1-0 (14) Tang,Y-Kwan,H Singapore 2008}) (9... c6 10. Nxf6+ gxf6 11. Bh6 { 0-1 (11) Zavagno,M (1443)-Zuttioni,F (1884) Udine 2009}) (9... Bg4 10. Qxg4 Nxg4 11. Bxd8 Raxd8 12. Nxc7 Rd7 13. Ne6 Re8 14. Nxd4 a6 15. Nb5 axb5 16. Bxb5 Rdd8 17. Bxe8 Rxe8 18. h3 Nf6 19. b4 Rd8 20. c4 b6 21. a4 Rc8 22. a5 bxa5 23. bxa5 Nd7 24. Rab1 {Stellnberger,P-Schmid,J Tschagguns 2009 1-0 (33)}) (9... c6 10. Nxf6+ gxf6 11. Bh4 $18) 10. Nxf6+ gxf6 11. Bh6 Re8 $4 {but even a better move would not have saved the game} (11... Kh8 12. Bxf8 Qxf8 $18) 12. Qf3 { White has a mate threat} (12. Bxe6 $142 {and the result of the game is clear: White will win} f5 13. Bxf5 $18) 12... Kh8 $14 13. c3 {White threatens to win material: c3xd4} Bb6 14. Bxe6 fxe6 {Black has a new doubled pawn: e5} 15. Qh3 Qe7 16. Rad1 Rg8 17. d4 exd4 18. cxd4 Rg6 19. Rd3 c5 (19... Rag8 20. g3 $11) 20. Be3 (20. dxc5 dxc5 21. Rfd1 c4 $16) 20... Rc8 (20... c4 $142 $5 {is worthy of consideration} 21. Rdd1 d5 $11) 21. dxc5 $16 Bxc5 22. Bxc5 Rxc5 23. Rfd1 Rc2 24. R3d2 (24. Qf3 $5 Rc6 25. Qe3 $16) 24... Rxd2 25. Rxd2 Qc7 (25... Rg5 26. Qe3 $16) 26. Qd3 $16 Qc1+ (26... Rg4 $142 $5 27. Rd1 Kg8 $16) 27. Rd1 $18 Qxb2 (27... Qg5 28. g3 d5 29. exd5 Qxd5 30. Qxd5 exd5 31. Rxd5 $18) 28. Qxd6 Qxa2 $4 {leading to a quick end} (28... Qe5 29. Qxe5 fxe5 $18) 29. Qf8+ Rg8 30. Qxf6+ ( 30. Qxf6+ Rg7 31. Rd8#) 1-0

Finally some reference games that are not all draws.

[Event "SVK-chT 0001"] [Site "Slovakia"] [Date "2001.03.18"] [Round "11"] [White "Buchnicek, Petr"] [Black "Kalisky, Vladimir"] [Result "1-0"] [ECO "C50"] [WhiteElo "2398"] [BlackElo "2225"] [PlyCount "63"] [EventDate "2000.10.21"] [EventType "team"] [EventRounds "11"] [EventCountry "SVK"] [SourceTitle "EXT 2002"] [Source "ChessBase"] [SourceDate "2001.11.25"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. Nc3 d6 6. d3 O-O 7. Bg5 Be6 8. Nd5 Bxd5 9. Bxd5 Ne7 10. Bxb7 Rb8 11. Ba6 Rxb2 12. Bc4 Rb6 13. Bxf6 gxf6 14. Nh4 Bd4 15. Qg4+ Kh8 16. Rae1 d5 17. exd5 Rg8 18. Qf3 Rg5 19. d6 Rxd6 20. Bxf7 Qf8 21. Bc4 Rd8 22. g3 Qg7 23. Kh1 Rf8 24. Qg2 Bc3 25. Rb1 f5 26. Rb3 Ba5 27. Rb5 Bc3 28. Rfb1 f4 29. Rb8 Ba5 30. Qa8 Rg8 31. Bxg8 Nxg8 32. Rxg8+ 1-0 [Event "Oberliga Baden 0304 "] [Site "Germany"] [Date "2004.04.25"] [Round "9.5"] [White "Milosevic, Goran"] [Black "Jost, Claude"] [Result "1/2-1/2"] [ECO "C50"] [WhiteElo "2395"] [BlackElo "2263"] [PlyCount "42"] [EventDate "2003.10.12"] [EventType "team"] [EventRounds "9"] [EventCountry "GER"] [SourceTitle "EXT 2006"] [Source "ChessBase"] [SourceDate "2005.11.24"] [WhiteTeam "Konstanz"] [BlackTeam "Kehl"] [WhiteTeamCountry "GER"] [BlackTeamCountry "GER"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O O-O 6. Nc3 d6 7. Bg5 h6 8. Bh4 g5 9. Nxg5 hxg5 10. Bxg5 Be6 11. Nd5 Bxd5 12. Bxd5 Kg7 13. Kh1 Rh8 14. c3 Qd7 15. Bxf6+ Kxf6 16. b4 Bb6 17. b5 Na5 18. f4 Rxh2+ 19. Kxh2 Rh8+ 20. Kg3 Rg8+ 21. Kh2 Rh8+ 1/2-1/2 [Event "Internet Section 08A g/8'+2""] [Site "Dos Hermanas"] [Date "2004.03.08"] [Round "5"] [White "Maslak, Konstantin"] [Black "Amin, Bassem"] [Result "1-0"] [ECO "C50"] [WhiteElo "2434"] [BlackElo "2415"] [PlyCount "101"] [EventDate "2004.03.08"] [EventType "swiss (blitz)"] [EventRounds "9"] [EventCountry "ESP"] [SourceTitle "CBM 099 ext"] [Source "ChessBase"] [SourceDate "2004.05.04"] 1. e4 e5 2. Bc4 Nc6 3. d3 Bc5 4. Nc3 d6 5. Nf3 Nf6 6. O-O O-O 7. Bg5 Be6 8. Nd5 Bxd5 9. Bxd5 h6 10. Bh4 g5 11. Bxc6 bxc6 12. Bg3 Rb8 13. Rb1 Bb6 14. c3 Qe7 15. Re1 Nd7 16. d4 f6 17. Qd3 c5 18. d5 Qf7 19. Nd2 f5 20. exf5 Qxf5 21. Ne4 Nf6 22. Qc4 Nxe4 23. Rxe4 Rf7 24. Rbe1 Qd7 25. h4 c6 26. hxg5 hxg5 27. Rg4 Bd8 28. dxc6 Qxc6 29. b3 Bf6 30. Bh4 d5 31. Qe2 Rg7 32. Bg3 Re8 33. c4 d4 34. Re4 Rge7 35. Qh5 Rh7 36. Qg6+ Rg7 37. Qh5 Rh7 38. Qf3 Bg7 39. Qg4 Qh6 40. f3 d3 41. Kf2 d2 42. Rd1 Rd8 43. Bxe5 Bxe5 44. Rxe5 Rg7 45. Ke2 Qh7 46. Rxd2 Rxd2+ 47. Kxd2 Qb1 48. Qc8+ Kh7 49. Qf5+ Qxf5 50. Rxf5 g4 51. f4 1-0 [Event "TUR-chT 1st League"] [Site "Konya"] [Date "2017.07.23"] [Round "9.1"] [White "Gulbas, Cemil"] [Black "Li, Di"] [Result "1/2-1/2"] [ECO "C50"] [WhiteElo "2366"] [BlackElo "2469"] [PlyCount "70"] [EventDate "2017.07.17"] [EventType "team-swiss"] [EventRounds "9"] [EventCountry "TUR"] [SourceTitle "Mega2017 Update 40"] [Source "Chessbase"] [SourceDate "2017.07.28"] [WhiteTeam "Izmir Rota Koleji"] [BlackTeam "Karaman Saglik"] [WhiteTeamCountry "TUR"] [BlackTeamCountry "TUR"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O O-O 6. Nc3 d6 7. Bg5 h6 8. Bh4 Bg4 9. h3 Bxf3 10. Qxf3 Nd4 11. Qd1 c6 12. Ne2 Nxe2+ 13. Qxe2 a5 14. a4 g5 15. Bg3 Nh7 16. c3 Qf6 17. Kh1 Rfe8 18. Rad1 Rad8 19. Qh5 d5 20. Bb3 d4 21. f4 exf4 22. Bxf4 gxf4 23. Qxc5 Ng5 24. h4 Re5 25. hxg5 hxg5 26. Qc4 Kg7 27. Kg1 b5 28. axb5 cxb5 29. Qc7 Rh8 30. cxd4 Re7 31. e5 Qh6 32. Qxe7 Qh2+ 33. Kf2 Qg3+ 34. Kg1 Qh2+ 35. Kf2 Qg3+ 1/2-1/2