It was fun playing in this game, which was published as one of the greatest correspondence games in Tim Harding's book Hao Yin vs The World, 2001

I enjoyed the privilege of playing on one of the first World teams to defeat a GM de Firmian vs The World, 2002

I'm looking forward to the Chessgames Challenge games.

A bit of friendly advice for our future opponents:

< You will have to play to win if you want to distinguish yourself from the GM's and World Champions we have defeated or played to a draw. Otherwise, we will simply continue our undefeated streak. >

Enjoy!

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       Chessgames Challenge: The World vs Naiditsch, 2014

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.c3 O-O 6.O-O d6 7.Nbd2 Ne7 8.d4 exd4 9.cxd4 Bb6 10.Re1 Bg4 11.h3 Bh5 12.a3 Bg6 13.Ba4 d5 14.e5 Ne4 15.Nxe4 dxe4 16.Nh4 Qxd4 17.Qxd4 Bxd4 18.Bg5 Nc6 19.Nxg6 fxg6 20.Rxe4 Bxf2+ 21.Kh2 Rf5 22.Bd2 Rd8 23.Bb4 Nxb4 24.axb4 c6 25.e6 Rb8 26.Rd1 Kf8 27.g4 Rf6 28.g5 Rf5 29.Rd7 b5 30.Bd1 Bb6 31.Bg4 Rf2+ 32.Kg3 Rf1 33.h4 Rg1+ 34.Kh2 Rf1 35.h5 Ke8 36.Rxg7 1-0

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Stockfish analysis and/or shootouts will be posted here throughout the game

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<d=51 Shootout> Stockfish 5 x64 modern - updated: 25 Dec 2014

Starting Position: < 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.c3 O-O 6.O-O d6 7.Nbd2 Ne7 8.d4 exd4 9.cxd4 Bb6 10.Re1 Bg4 11.h3 Bh5 12.a3 Bg6 13.Ba4 d5 14.e5 Ne4 15.Nxe4 dxe4 16.Nh4 Qxd4 17.Qxd4 Bxd4 18.Bg5 Nc6 19.Nxg6 fxg6 20.Rxe4 Bxf2 21.Kh2 Rf5 22.Bd2 Rd8 23.Bb4 Nxb4 24.axb4 c6 25.e6 Rb8 26.Rd1 Kf8 27.g4 Rf6 28.g5 Rf5 29.Rd7 b5 30.Bd1 Bb6 31.Bg4 Rf2+ 32.Kg3 Rf1 33.h4 Rg1+ 34.Kh2 Rf1 35.h5 Ke8 36.Rxg7 Rd8 37.Rd7 Rf2+ 38.Kg3 >

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The following line was played after a full d=51 per half-move:

38... Rf1 39.e7 Rc8 40.hxg6 hxg6 41.Rb7 Bc7+ 42.Kg2 Rf4 43.Bxc8 Rxe4 44.Rxc7 Rxe7 45.Rxe7+ Kxe7

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Current analysis:

1) d=50 <+M18> 46.Kf3 Kd6 47.Kf4 c5 48.bxc5+ Kxc5 49.Ke5 Kc4 50.Bf5 gxf5 51.g6 f4 52.Kxf4 Kd4 53.g7 a5 54.g8Q a4 55.Qd8+ Kc4 56.Ke4 Kb4 57.Qc7 Kb3 58.Qc3+ Ka2 59.Kd3 Kb1 60.b4 axb3 61.Qxb3+ Ka1 62.Kc2 b4 63.Qb2#

2) d=50 <+M18> 46.Kg3 Kd6 47.Kf4 c5 48.bxc5+ Kxc5 49.Ke5 Kc4 50.Bf5 gxf5 51.g6 f4 52.Kxf4 Kd4 53.g7 a5 54.g8Q a4 55.Qd8+ Kc4 56.Ke4 Kb4 57.Qc7 Kb3 58.Qc3+ Ka2 59.Kd3 Kb1 60.b4 axb3 61.Qxb3+ Ka1 62.Kc2 b4 63.Qb2#

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After 36.Rxg7 Rd8 37.Rd7 a6 38.e7 Rb8 39.hxg6 hxg6 40.Rd6 Bc7 41.Bd7+ Kf7 42.e8Q+ Rxe8 43.Bxe8+ Kf8 44.Kg2 Rg1+ 45.Kxg1 Bxd6 46.Bxc6 Bc7 47.Kg2 Bb6 48.Kf3 Kg8 49.Bd5+ Kg7 50.Rf4

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Stockfish 5 x64 modern: - Updated 22 Dec 2014

1) d=52 <+M12> 50... Bg1 51.Rf7+ Kh8 52.Be4 Kg8 53.Bxg6 Bd4

2) d=52 <+M10> 50... a5 51.Rf7+ Kg8 52.Rb7+ Kf8 53.Rxb6 a4

3) d=52 <+M10> 50... Bd8 51.Rf7+ Kg8 52.Kf4 a5 53.bxa5 Bxa5

4) d=52 <+M10> 50... Kh7 51.Rf7+ Kh8 52.Ke4 Kg8 53.Rf6+ Kg7

5) d=52 <+M10> 50... Kh8 51.Rf6 Bd4 52.Rxg6 Bg7 53.Kg4 Kh7

6) d=52 <+ M9> 50... Bd4 51.Rxd4 Kf8 52.Re4 Kg7 53.Re8 Kh7

7) d=52 <+ M8> 50... Be3 51.Kxe3 Kh7 52.Rf7 Kg8 53.Kd4 Kh8

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After 35... Ke8 36.Rxg7

Stockfish 5 x64 modern: - Updated 20 Dec 2014

1) d=44 <+ 7.61> 36... Rd8 37.Rd7 Rf2+ 38.Kg3 Rf1 39.e7 Rb8

2) d=44 <+40.55> 36... Rf2+ 37.Kg3 Rd8 38.Rg8+ Rf8 39.Rxf8+ Kxf8

3) d=44 <+58.19> 36... Rg1 37.Rg8+ Ke7 38.Rxb8 Bc7+ 39.Kxg1 Bxb8

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After 34... Rf1 35.h5

Stockfish 5 x64 modern: - Updated 13 Dec 2014

1) d=47 < +7.76> 35... Rf2+ 36.Kg3 Rf1 37.h6 gxh6 38.gxh6 Re8

2) d=47 <+10.98> 35... a6 36.hxg6 hxg6 37.e7+ Ke8 38.Rd6 Rf5