Breunor: An Englishman, trying to check where black goes wrong. Black slowly falls behind for a while, but 22 Rc8 really moves the game to a bad spot. Here are some of the important moves:On move 12, black had:
1) +0.11 (20 ply) 12...Qxb3 13.axb3 O-O-O 14.Nb1 Kb8 15.Ke2 Be7 16.Ba5 Rc8 17.Nd2 Nd7 18.e4 Nc7 19.exd5 cxd5 20.Bxc7+ Rxc7 21.c5 e5 22.Bxd5 exd4 23.Bxf7 Nxc5
Instead, Be7 starts going down the wrong path:
1) +0.42 (18 ply) 13.g5 Nd7 14.h4 Nc7 15.O-O-O O-O-O 16.f4 Qxb3 17.axb3 Bb4 18.Kc2 Kb8 19.Ra1 Nb6 20.c5 Nc8 21.Ra4 a5 22.Raa1 Ne7
Move 21 Kd8 cost him a few tenths, best was Nd5:
1) +0.58 (22 ply) 21...Nd5 22.Rc1 g5 23.Bf1 Nb8 24.a5 f6 25.Kg2 Kf7 26.Kg3 Rhd8 27.f3 Rh8 28.Ra3 Rdd8 29.e4 Ne7 30.Be3 Rd7 31.b4 Rdd8 32.Rb3 Nd7 33.b5 cxb5 34.Bxb5
On the actual Kd8:
1) +0.89 (19 ply) 22.Rb1 g5 23.Bf1 Kc8 24.Bxa6 bxa6 25.Kg2 Rb7 26.Rxb7 Kxb7 27.f3 Nd5 28.Rc1 Kc7 29.e4 Nf4+ 30.Bxf4+ gxf4 31.d5 Rd8 32.Rxc6+ Kb7 33.Rc4 exd5 34.exd5 Rxd5 35.Rb4+ Kc6 36.Rxf4 f6 37.Kg3 Rd2 38.Rc4+ Kd5
On 24, black would have been in good shape after Nc7:
1) +0.35 (22 ply) 24...Nc7 25.Be1 g5 26.Rb3 Nfd5 27.b5 cxb5 28.axb5 f6 29.Kh2 f5 30.gxf5 exf5 31.Kg1 Ne6 32.Bd2 f4 33.Ba5 Rc8 34.Bd2 Rxc1+ 35.Bxc1 fxe3 36.fxe3
But instead, after the actual move we have:
1) +1.42 (22 ply) 25.b5 cxb5 26.Rxc8+ Kxc8 27.axb5 Nc7 28.Rxa7 Nxb5 29.Ra8+ Kc7 30.g5 Nd5 31.Rg8 Nd6 32.Rxg7 Nc4 33.Be1 b5 34.h4 Kd6 35.Kf1 b4 36.Bxd5 Kxd5 37.Bxb4 Rb7 38.Bc5 Nd2+ 39.Kg2 Ne4 40.Bf8 Nd2
So that cost a whole pawn.
The next move to make the position a decent amount worse was 32 c5?
Two better moves are:
1) +0.87 (22 ply) 32...Nd7 33.bxc6 Rxc6 34.Rxc6 bxc6 35.Bd2 N7f6 36.f3 g6 37.Kf2 Rb8 38.Rxb8+ Kxb8 39.Bg2 Kc7 40.e4 Nf4 41.h4 fxe4 42.hxg5 e3+ 43.Bxe3 N6d5 44.Bxf4+ Nxf4 45.Bf1 Ne6 46.Bd3 Nxg5 47.Bxg6
2) +0.88 (22 ply) 32...g6 33.bxc6 Nxc6 34.Be2 Kb8 35.a5 Rd7 36.Bf3 Nce7 37.Rxc8+ Kxc8 38.Rb5 Kb8 39.Bd2 Nf6 40.a6 b6 41.Re5 Nfd5 42.Bxd5 Nxd5 43.Re6 Kc7 44.Rxg6
However, after c5, we have:
1) +1.66 (25 ply) 33.Rxc5 Rxc5 34.dxc5 Nd7 35.Rd3 N7f6 36.Rd4 Rxc5 37.Bb4 Rc8 38.Bd3 Nxb4 39.Bxf5 Nc2 40.Bxc2 Kb8 41.Bf5 Rc5 42.Be6 Re5 43.Bf7 Kc7 44.Kf3 Kb6 45.Bg6 Rc5 46.h4 gxh4 47.Rxh4 Rd5
Move 42 is the next big mistake, although the game is very difficult for black under the best moves.
Best (but still probably lost) is:
1) +1.94 (22 ply) 42...Ne5 43.Bf1 Rxd4 44.exd4 Nf7 45.Bf4 Nc8 46.Bc7 b6 47.Kg3 Kb7 48.Be5 Ncd6 49.Bg2+ Kc7 50.Bc6 Kc8 51.h4 Kd8 52.Bf6+ Kc7 53.Kf4 Ne4 54.Bxe4 fxe4 55.Kxe4 Kd7 56.Be5 Nd6+ 57.Bxd6 Kxd6 58.f3
After Nc5 we have:
1) +3.41 (23 ply) 43.Rxd5 Nxd5 44.Bc4 Nc7 45.h4 N5e6 46.Bf4 Nxf4+ 47.exf4 Kb6 48.Bf7 Kc5 49.Bxg6 Kd5 50.Bxf5 Nxb5 51.h5 Nd6 52.Bc2 Ke6 53.h6 Kf6 54.Kf3 Nf7 55.h7 Kg7 56.Ke3 b5 57.Kd4 Nd6
Sacsacmate:
Computer doesn't like 23 Bxc6:
1) -0.87 (21 ply) 23...bxc6 24.Rxc6+ Nc7 25.Kg2 Rhd8 26.Ba5 Nd5 27.h4 Rd6 28.Rc1 Ra6 29.Rb5 Nb6 30.Rbc5 Rd7 31.Kf3 Kb7 32.b3 Ne8 33.Bd2 Nd5 34.e4 Ne7 35.R1c4 Rc6
Better is Rd3:
1) +0.72 (20 ply) 23.Rd3 Nd5 24.g5 Rhd8 25.Bf3 f6 26.Ra3 fxg5 27.Be4 Rf7 28.Kg2 Rf6 29.f3 Nac7 30.Rb3 Rh8 31.Kg3 Ne7 32.Kg2
Kibitzing
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