Ethereal: suboptimal moves in won endgame

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ernest
Posts: 2041
Joined: Wed Mar 08, 2006 8:30 pm

Ethereal: suboptimal moves in won endgame

Post by ernest »

This is a follow-up of my previous thread concerning the CCCC game #450, Nemorino-Ethereal
http://talkchess.com/forum3/viewtopic.php?f=2&t=68438

I am always appalled when I see a good program, here Ethereal, play a sequence of "stupid" (or very suboptimal) moves.
This was the case in an easily won endgame.

Maybe it shows an anomaly of Ethereal (access to Syzygy, or...) or a problem of CCCC (the game ended abruptly after move 83).

See moves around 65 to 80. :shock: :roll: :evil: :mrgreen:

Thanks to Guenther, I was able to find the pgn in https://newman.chess.com/games.pgn

[pgn][Round "?"] [White "Nemorino 5.00"] [Black "Ethereal 10.88"] [Result "*"] [WhiteElo "3099"] [BlackElo "3283"] [WhiteType "program"] [BlackType "program"] [ECO "E12"] [Opening "Queen's Indian"] [Variation "Petrosian system"] [TimeControl "900+5"] [Time "19:53:44"] [Termination "unterminated"] [PlyCount "166"] 1. d4 { (d2d4 Ng8f6 c2c4 e7e6 Nb1c3 Bf8b4 Ng1f3 OO e2e3 d7d5 Bf1d3 d5xc4 Bd3xc4 c7c5 OO c5xd4 e3xd4 Nb8c6 Bc1f4 a7a6 Bc4d3) +0.39/21 65 } 1... Nf6 { (Ng8f6 c2c4 e7e6 Ng1f3 b7b6 Nb1c3 Bf8b4 Bc1d2 Bb4xc3 Bd2xc3 Nf6e4 Qd1c2 Bc8b7 e2e3 Ne4xc3 Qc2xc3 OO Bf1e2 d7d6 OO Nb8d7 h2h3 Rf8e8 Ra1d1 h7h6 Qc3c2 e6e5 d4xe5 Nd7xe5) -0.12/27 77 } 2. c4 { (c2c4 d7d5 c4xd5 c7c6 d5xc6 Nb8xc6 Ng1f3 e7e5 e2e3 e5xd4 Nf3xd4 Bf8d6 Nb1c3 OO Bf1e2 Nc6xd4 e3xd4 a7a6 OO Bc8f5 g2g4 Bf5d7 g4g5 Rf8e8 g5xf6) +0.38/25 0 } 2... e6 { (e7e6 Ng1f3 b7b6 Bc1f4 Bc8b7 e2e3 c7c5 Nb1c3 c5xd4 Nf3xd4 d7d6 Bf4g3 a7a6 Nd4f3 Bf8e7 h2h3 OO Bf1e2 e6e5 OO Nb8d7 Nf3d2 Ra8c8 Rf1e1 Nd7c5 b2b4 Nf6e4) -0.14/26 20 } 3. Nf3 { (Ng1f3 d7d5 Nb1c3 a7a6 e2e3 c7c5 c4xd5 Nb8c6 d5xc6) +0.36/22 19 } 3... b6 { (b7b6 Bc1f4 Bc8b7 Nb1c3 Bf8b4 e2e3 Nf6e4 Qd1c2 f7f5 Bf1d3 g7g5 Bf4e5 OO OO Bb4xc3 b2xc3 d7d6 Be5g3 Nb8d7 Nf3d2 Nd7f6 Nd2xe4 Nf6xe4 f2f3 Ne4xg3 h2xg3 Kg8g7 e3e4 Kg7g6 e4e5) -0.15/28 32 } 4. a3 { (a2a3 Bc8b7 Nb1c3 d7d5 Bc1g5 Bf8e7 Bg5xf6 Be7xf6 c4xd5 e6xd5 e2e3 OO Bf1d3 Nb8d7 Qd1d2 g7g6 OO c7c6 Rf1e1 Bf6g7) +0.38/20 22 } 4... Bb7 { (Bc8b7 Nb1c3 d7d5 Bc1g5 Bf8e7 c4xd5 Nf6xd5 Nc3xd5 Bb7xd5 Bg5xe7 Qd8xe7 Ra1c1 OO e2e3 c7c5 d4xc5 b6xc5 Bf1d3 f7f5 Bd3c4 Rf8d8 Bc4xd5 Rd8xd5 Qd1c2 Nb8d7 OO Nd7f6 Rf1d1) -0.19/26 37 } 5. Nc3 { (Bc1d2 c7c5 e2e3 c5xd4 e3xd4 Bb7xf3 Qd1xf3 Nb8c6 Bd2e3 e6e5 d4xe5 Nc6xe5 Qf3e2 Bf8d6 f2f4 Ne5g6 g2g3 OO Nb1c3) +0.30/23 0 } 5... d6 { (d7d6 Bc1f4 Bf8e7 Qd1c2 Nb8d7 e2e4 c7c5 d4d5 e6e5 Bf4e3 OO Bf1d3 h7h6 OO a7a6 b2b4 Nf6h7 h2h3 Be7f6 b4b5 Nh7g5 Nf3h2 Ng5h7 Ra1d1 a6a5 Rf1e1 Rf8e8 f2f4) -0.31/28 30 } 6. d5 { (d4d5 a7a5 e2e4 Nb8d7 Bf1e2 Bf8e7 OO Nd7c5 Qd1c2 OO Nf3d4 Nf6d7 Bc1e3 a5a4 f2f3 Be7f6 Ra1d1 Qd8e7 Nd4b5 Nd7e5 f3f4) +0.54/21 13 } 6... g6 { (g7g6 e2e4 Bf8g7 Bf1e2 OO OO Nb8d7 Bc1e3 Rf8e8 Nf3d4 a7a5 Nd4b5 Nd7c5 Qd1c2 a5a4 Ra1d1 e6e5 Be3xc5 b6xc5 h2h3 h7h5 Rf1e1 Bg7h6 Nc3xa4 Kg8h7 b2b4 c5xb4 a3xb4 Kh7g8 Na4c3) -0.43/29 56 } 7. e4 { (e2e4 Bf8g7 Bf1e2 Nb8d7 OO OO Bc1e3 Nd7c5 Qd1c2 a7a5 Nf3d2 Rf8e8 Rf1d1 a5a4 Be3g5 h7h6 Bg5e3 Nf6d7 d5xe6 f7xe6 f2f3) +0.66/21 22 } 7... Bg7 { (Bf8g7 Bf1e2 a7a5 Nf3d4 e6e5 Nd4b5 Nb8d7 Bc1e3 Nd7c5 Qd1c2 Nf6d7 Ra1d1 a5a4 Be2g4 Nd7f6 Be3xc5 b6xc5 Bg4f3 OO OO h7h5 Nc3xa4 Bg7h6 Na4c3 Nf6d7 Qc2e2 Rf8e8 Rf1e1) -0.50/28 1 } 8. Be2 { (Bf1e2 Nb8d7 OO OO Bc1e3 Rf8e8 Qd1c2 Qd8e7 Ra1e1 e6xd5 e4xd5 Nd7c5 Be3d4 Nf6g4 Bd4xg7 Kg8xg7 b2b4 Nc5e4 Be2d3) +0.58/20 11 } 8... O-O { (OO OO Nb8d7 Bc1e3 Nf6g4 Be3g5 Bg7f6 Bg5xf6 Ng4xf6 Qd1d2 e6e5 b2b4 a7a5 Be2d3 Kg8g7 Nc3e2 Nf6h5 Rf1b1 Qd8f6 Bd3c2 Nh5f4 Bc2a4 Nf4xe2+ Qd2xe2 Qf6e7 Ba4c6 Bb7xc6 d5xc6 Nd7f6 b4b5 h7h6 h2h3) -0.36/30 28 } 9. Bg5 { (Bc1g5 Nb8d7 OO e6xd5 e4xd5 Rf8e8 Nf3d4 Nd7c5 Ra1c1 Qd8d7 Bg5e3 Nc5e4 Nc3xe4 Nf6xe4 b2b4 a7a5 Rf1e1 Ne4f6 Qd1d3 a5xb4 a3xb4) +0.49/21 86 } 9... h6 { (h7h6 Bg5e3 Nf6g4 Be3c1 Rf8e8 OO e6xd5 e4xd5 Nb8d7 h2h3 Ng4f6 Bc1e3 Nd7c5 Rf1e1 c7c6 d5xc6 Bb7xc6 Nf3d4 Bc6b7 Be2f3 Bb7xf3 Nd4xf3 Ra8c8 Be3xc5 Re8xe1+ Qd1xe1 d6xc5 Nc3b5 Nf6d7 Nb5xa7) -0.21/27 37 } 10. Be3 { (Bg5e3 Nf6g4 Be3d2 Nb8d7 OO Nd7c5 h2h3 Ng4f6 Qd1c2 e6xd5 e4xd5 Rf8e8 Bd2e3 Nf6e4 Nc3xe4 Nc5xe4 Be3d4 Bg7xd4) +0.49/18 11 } 10... Re8 { (Rf8e8 Ra1c1 Nf6g4 Be3d2 Nb8d7 OO a7a6 Rf1e1 e6xd5 e4xd5 Ng4e5 Nf3xe5 Nd7xe5 Bd2e3 Qd8h4 g2g3 Qh4f6 f2f4 Ne5d7 Qd1d2 Re8e7 Be2d1 Ra8d8 Be3f2 Rd8e8 Re1xe7 Qf6xe7 b2b4 c7c6) -0.22/28 13 } 11. O-O { (OO e6xd5 e4xd5 Nb8d7 Rf1e1 Nd7c5 Ra1c1 Nf6e4 Nc3xe4 Nc5xe4 Nf3d4 a7a5 b2b4 Qd8d7 Be2d3 a5xb4 a3xb4 Ne4f6 h2h3 Nf6e4 Qd1c2 Ne4g5) +0.49/22 22 } 11... Ng4 { (Nf6g4 Be3d2 Nb8d7 Ra1c1 e6xd5 e4xd5 a7a6 Rf1e1 Ng4e5 Nf3xe5 Nd7xe5 Be2f1 Qd8h4 Re1e4 Qh4d8 h2h3 f7f5 Re4e1 Qd8h4 b2b3 Re8e7 Qd1c2 Ra8e8 Nc3e2 Ne5f7 g2g3 Qh4e4 Qc2xe4 Re7xe4 Ne2f4 Bg7b2 Rc1d1) -0.28/31 26 } 12. Bd2 { (Be3d2 e6xd5 e4xd5 Nb8d7 Ra1c1 a7a5 b2b4 a5xb4 a3xb4 Bg7xc3 Bd2xc3 Ng4e5 Nf3xe5 Nd7xe5 f2f4 Ne5d7 Be2g4 Nd7f6) +0.40/21 31 } 12... exd5 { (e6xd5 e4xd5 Nb8d7 Ra1c1 Ng4e5 Nf3xe5 Re8xe5 Bd2e3 a7a6 Rf1e1 Qd8h4 g2g3 Qh4d8 Be2f1 Qd8e7 Rc1c2 Ra8e8 Rc2e2 Qe7f8 h2h3 f7f5 Bf1g2 Re5e7 Be3d4 Re7xe2 Re1xe2 Bg7e5 Qd1d2 Nd7c5 Bd4xe5 d6xe5 b2b4 Nc5b3 Qd2e3 Nb3d4 Re2e1) -0.31/33 99 } 13. exd5 { (e4xd5 Nb8d7 Ra1c1 Ng4e5 Nf3xe5 Bg7xe5 f2f4 Be5g7 b2b4 Nd7f6 Be2f3 Bb7c8 Rf1e1 a7a6 Bd2e3 Bc8f5 Be3d4 Re8xe1+ Qd1xe1 Qd8f8 Qe1d2 Ra8e8 h2h3 h6h5 Kg1h2 Nf6d7) +0.43/26 0 } 13... Nd7 { (Nb8d7 Ra1c1 Ng4e5 Nf3xe5 Re8xe5 Nc3b5 a7a6 Nb5d4 Qd8f8 Be2f3 Ra8e8 Bd2e3 h6h5 Qd1d2 Nd7f6 Rc1d1 Kg8h7 Qd2c3 Kh7g8 Qc3c1 Kg8h7 Rd1d3 Re5e7 h2h4 Nf6d7 Be3g5 Nd7c5 Rd3d1 Bg7xd4 Bg5xe7 Qf8g7 Qc1g5 Bd4xb2) -0.38/33 14 } 14. Rc1 { (Ra1c1 a7a5 Rf1e1 Ng4e5 Nf3d4 Nd7c5 Bd2e3 a5a4 Qd1c2 Bb7c8 h2h3 h6h5 Nc3b5 Bc8b7 Be2f1 Ra8c8 Nb5c3 Rc8a8 Qc2d1 Bb7a6 Nc3b5 Ba6b7) +0.41/22 6 } 14... Nge5 { (Ng4e5 Nf3xe5 Nd7xe5 Bd2e3 a7a6 Rf1e1 Qd8h4 g2g3 Qh4f6 f2f4 Ne5d7 Be2g4 Bb7c8 Bg4f3 g6g5 Qd1d3 g5xf4 Be3xf4 Qf6d4+ Qd3xd4 Bg7xd4+ Kg1g2 Nd7e5 Bf4xh6 Bc8f5 Re1f1 Ne5xf3 Kg2xf3 Bf5d3 Rf1d1 Bd4xc3 Rd1xd3 Bc3xb2 Rc1b1 Bb2f6 Bh6e3 a6a5) -0.29/30 10 } 15. Nxe5 { (Nf3xe5 Nd7xe5 b2b4 a7a5 f2f4 Ne5d7 Be2d3 Bb7a6 Kg1h1 Bg7d4 Qd1c2 Qd8h4 Rf1f3 a5xb4 a3xb4 Bd4g7 Rf3h3 Qh4d8 Rc1a1 f7f5 Qc2d1 h6h5) +0.49/22 10 } 15... Nxe5 { (Nd7xe5 Rf1e1 a7a6 Be2f1 f7f5 h2h3 Qd8h4 g2g3 Qh4d4 Bd2e3 Qd4xd1 Re1xd1 h6h5 h3h4 Kg8h7 Kg1g2 Ra8b8 b2b4 Rb8c8 Bf1e2 Ne5g4 Be3d4 Ng4e5 Rc1b1 Bg7f6 b4b5 a6xb5 Nc3xb5 Ne5d7 Rd1e1) -0.25/29 4 } 16. b4 { (b2b4 a7a6 h2h3 f7f5 f2f4 Ne5d7 Be2d3 c7c5 Kg1h2 h6h5 Rf1e1 Bg7d4 Rc1b1 Qd8h4 Qd1f3 Qh4f6 Bd3c2 Ra8c8 Nc3e2 Bd4b2 Qf3b3 Bb2d4) +0.48/22 14 } 16... a6 { (a7a6 f2f4 Ne5d7 Kg1h1 Ra8c8 Be2g4 f7f5 Bg4f3 h6h5 Qd1c2 Nd7f6 Qc2d3 Qd8d7 h2h3 Re8e7 Rc1e1 Rc8e8 Kh1g1 Qd7c8 Re1xe7 Re8xe7 Rf1e1 Qc8e8 Re1e3 h5h4 a3a4 Re7xe3 Bd2xe3 Qe8e7 Qd3d2 Nf6d7) -0.25/29 19 } 17. f4 { (f2f4 Ne5d7 Kg1h1 Nd7f6 Be2d3 c7c6 Qd1f3 Ra8c8 a3a4 Qd8d7 Qf3f2 c6xd5 c4xd5 Qd7d8 Qf2f3 Qd8d7 f4f5 g6g5 b4b5 a6a5 Bd2e3 Qd7d8) +0.48/22 18 } 17... Nd7 { (Ne5d7 Kg1h1 Ra8c8 Be2g4 f7f5 Bg4f3 Nd7f6 Bd2e1 Qd8e7 Be1f2 Qe7f7 Qd1d2 Rc8b8 a3a4 Nf6e4 Nc3xe4 f5xe4 Bf3g4 Bb7c8 Bg4xc8 Rb8xc8 Bf2e3 h6h5 h2h3 Re8f8 c4c5 d6xc5 b4xc5 b6xc5 Rc1xc5 Rf8d8 Rf1c1 Bg7f8 Rc5a5 Bf8a3 Rc1c2) -0.37/34 48 } 18. Kh1 { (Kg1h1 Nd7f6 f4f5 g6g5 Be2d3 c7c6 d5xc6 Bb7xc6 Nc3d5 b6b5 Qd1b3 Re8e5 Bd2c3 Nf6xd5 Bc3xe5 Nd5e3 Be5xg7 Bc6xg2+ Kh1g1 Bg2xf1 Bd3xf1 Ne3xf1 Bg7xh6) +0.43/23 0 } 18... Rc8 { (Ra8c8 Be2g4 f7f5 Bg4f3 Nd7f6 Bd2e1 Kg8h7 Be1h4 Qd8e7 Rf1e1 Qe7f7 Qd1d3 Re8xe1+ Rc1xe1 Rc8e8 Re1xe8 Qf7xe8 h2h3 Bb7c8 Kh1h2 Qe8e7 Kh2g1 Qe7e8 a3a4 Nf6d7 Qd3d2 Nd7f6 b4b5 Nf6d7 b5xa6 Bc8xa6 Nc3b5 Nd7c5 Nb5xc7) -0.31/31 21 } 19. Bg4 { (Be2g4 f7f5 Bg4f3 Nd7f6 g2g4 Qd8d7 g4g5 Nf6h7 h2h4 h6h5 Qd1c2 Nh7f8 Qc2d3 Re8e7 Rf1e1 Rc8e8 Kh1g1 Re7xe1+ Rc1xe1 Re8xe1+) +0.53/20 22 } 19... f5 { (f7f5 Bg4f3 Qd8f6 Qd1c2 Re8e7 Rf1e1 Rc8e8 Re1e6 Qf6f7 Qc2d3 Nd7f6 Rc1e1 Bb7c8 Re6xe7 Re8xe7 Re1xe7 Qf7xe7 h2h3 h6h5 Kh1g1 Bc8d7 Bd2e3 Bd7e8 Be3f2 Bg7h6 Qd3d2 Be8d7 Qd2d4 Bh6g7 Qd4d3 Bg7h6 Bf2e3 Kg8h7 b4b5 Bd7c8 a3a4 a6xb5) -0.33/34 1 } 20. Bf3 { (Bg4f3 Nd7f6 Bd2e1 Qd8e7 Be1h4 Qe7e3 Bh4f2 Qe3e7 Qd1d2 h6h5 h2h3 Qe7f7 Bf2d4 Nf6d7 Rc1e1 Bg7xd4 Qd2xd4 Re8xe1 Rf1xe1 Rc8e8 Re1e6 Nd7f8 Re6e2 Re8xe2) +0.52/24 15 } 20... Qf6 { (Qd8f6 Qd1c2 Re8e7 Rf1e1 Rc8e8 Re1e6 Qf6f7 Rc1e1 Bb7c8 Qc2d3 Nd7f6 Re6xe7 Re8xe7 Re1xe7 Qf7xe7 h2h3 Qe7e8 Kh1g1 h6h5 a3a4 Nf6d7 Kg1f2 h5h4 Qd3e3 Kg8f7 Kf2e2 Qe8e7 Qe3xe7+ Kf7xe7 Ke2d3 Bg7f6 Bd2e3 Bf6g7 Be3d4) -0.38/30 11 } 21. g4 { (g2g4 Re8e7 Rf1g1 Rc8e8 Qd1c2 Re7e3 Bf3g2 Re3e7 g4xf5 Qf6xf5 Qc2xf5 g6xf5 Bg2h3 Re7f7 Rg1g3 Bb7c8 Bh3g2 Nd7f6 Bg2f3 Rf7e7 Rc1g1 Kg8h8 Nc3d1) +0.48/23 34 } 21... Re7 { (Re8e7 g4xf5 Qf6xf5 Bf3g4 Qf5d3 Bg4e2 Qd3f5 Rf1f3 b6b5 Be2d3 Qf5h5 Rf3g3 b5xc4 Bd3xc4 Rc8f8 Qd1xh5 g6xh5 Bc4b3 Nd7f6 f4f5 Bb7c8 Bd2xh6 Bc8xf5 Bh6xg7 Re7xg7 Bb3c4 Nf6e4 Rg3xg7+ Kg8xg7 Bc4xa6 Ne4f2+ Kh1g2 Nf2d3) 0.00/30 13 } 22. Rg1 { (Rf1g1 Rc8e8 Qd1c2 Re7e3 Bf3g2 Re3e7 Bg2f1 f5xg4 Rg1xg4 Nd7f8 Bf1d3 Bb7c8 Rg4g3 Bc8f5 Bd3xf5 Qf6xf5 Qc2xf5 g6xf5 b4b5 a6a5 Nc3d1 Kg8h7) +0.55/22 0 } 22... Rce8 { (Rc8e8 Rg1g3 Nd7f8 g4xf5 Qf6xf5 Bf3g4 Qf5f6 f4f5 g6g5 Bg4h5 Qf6xf5 Bh5xe8 Re7xe8 Rg3f3 Qf5g6 Bd2e3 c7c5 Be3f2 Bb7c8 Qd1d3 Qg6xd3 Rf3xd3 Nf8g6 Bf2g3 Bc8f5 Rd3f3 Bf5g4 Rf3d3 c5xb4 a3xb4 Ng6e5 Rd3e3 Re8f8 Nc3e4 Rf8f3 Re3e2 Rf3a3 Bg3xe5 Bg4xe2 Be5xg7 Kg8xg7 Ne4xd6) +0.03/34 21 } 23. gxf5 { (Rg1g2 Nd7f8 b4b5 a6xb5 Nc3xb5 Bb7c8 g4g5 h6xg5 Bd2c3 Qf6f7 Bc3xg7 Qf7xg7 Rg2xg5 Bc8b7 Rg5g3 Bb7a6) +0.37/23 0 } 23... Qxf5 { (Qf6xf5 Rg1g2 h6h5 Qd1f1 Bb7c8 Bf3d1 Nd7f8 Bd1c2 Qf5f6 f4f5 Bc8xf5 Rg2f2 Re7f7 Bc2xf5 g6xf5 Qf1g2 Qf6g6 Qg2f1 Bg7h6 Bd2xh6 Qg6xh6 Nc3e2 Nf8g6 Ne2d4 f5f4 Nd4e6 Ng6e5 b4b5 a6xb5 Rf2xf4 Rf7xf4 Ne6xf4 Qh6g5 Nf4e6) +0.50/32 55 } 24. Rg2 { (Rg1g2 Nd7f8 Qd1f1 Qf5f7 Rg2g3 Bb7c8 c4c5 b6xc5 b4xc5 d6xc5 Nc3a4 Nf8d7 Na4xc5 Nd7b6 Nc5d3 Nb6xd5 Rc1c6 Bc8f5 Nd3e5 Bg7xe5 f4xe5 Re7xe5 Qf1c4 Nd5f6) +0.07/24 26 } 24... h5 { (h6h5 Qd1f1 Bb7c8 Bf3d1 Nd7f8 Bd1a4 Bc8d7 Rg2g5 Qf5f6 Ba4xd7 Re7xd7 Rc1d1 Rd7f7 Qf1d3 Qf6d4 Qd3f1 Bg7h6 Rg5g2 Kg8h7 Rg2f2 Nf8d7 b4b5 a6a5 f4f5 g6g5 Bd2e1 Qd4g7 Nc3e2 Re8e3 Rf2f3 Re3xf3 Qf1xf3 g5g4 Qf3g2 Bh6e3 Ne2g3 Nd7f6 Be1c3) +0.49/35 11 } 25. Qf1 { (Qd1f1 Bb7c8 Bf3d1 Nd7f8 Bd1a4 Bc8d7 Ba4xd7 Re7xd7 Rg2g5 Qf5f6 Qf1d3 Qf6d4 Rg5g3 Rd7f7 Rc1g1 Qd4xd3 Rg3xd3 Kg8h7 Rg1g2 Bg7h6 Rg2e2 Re8xe2) +0.14/22 12 } 25... Bc8 { (Bb7c8 Bf3d1 Nd7f8 Bd1a4 Bc8d7 Ba4xd7 Re7xd7 Rg2g5 Qf5f6 Rg5g2 Rd7f7 Nc3e2 Qf6f5 Ne2g1 Bg7f6 Ng1f3 Rf7e7 a3a4 h5h4 b4b5 a6a5 Rg2g1 Re7e2 Rc1e1 Re2xe1 Nf3xe1 Qf5b1 Rg1g2 Kg8f7 Rg2f2 Nf8d7 Ne1d3 Qb1xf1+ Rf2xf1 Re8e4) +0.62/32 15 } 26. Be2 { (Bf3e2 Nd7f8 Be2d3 Qf5f6 Rg2f2 Bc8f5 Rf2f3 Re7f7 a3a4 Bf5xd3 Qf1xd3 Qf6d4 Qd3xd4 Bg7xd4 Rf3d3 Bd4g7 Rd3g3 Bg7h6 Rc1f1 Kg8h7 Rg3e3 Re8xe3) +0.02/22 21 } 26... Nf8 { (Nd7f8 Be2d3 Qf5h3 Rg2g1 Qh3xf1 Rc1xf1 Bg7d4 Bd3xg6 Nf8xg6 Rg1xg6+ Re7g7 Rg6g5 Bc8h3 Rf1f3 Bh3g4 Rf3f1 Kg8f7 Rg5xg7+ Bd4xg7 Kh1g2 Bg4f5 Rf1e1 Bf5d3 Re1xe8 Kf7xe8 Kg2g3 Ke8f7 Kg3f3 Bd3xc4 Kf3e4 Bc4b3 Ke4f5 Bg7xc3 Bd2xc3 Bb3xd5) +0.61/29 24 } 27. Bd3 { (Be2d3 Qf5f7 f4f5 Re7e5 f5xg6 Qf7xf1+ Rc1xf1 Bc8h3 Rf1d1 Bh3xg2+ Kh1xg2 Nf8d7 Nc3b1 Re5e7 Kg2g3 Nd7e5 Bd2g5) 0.00/25 0 } 27... Qh3 { (Qf5h3 c4c5 b6xc5 b4xc5 Re7e3 Bd2xe3 Re8xe3 Nc3e4 Re3xd3 Ne4f2 Rd3f3 Nf2xh3 Rf3xf1+ Rc1xf1 Bc8xh3 Rf1c1 Bg7d4 c5xd6 c7xd6 Rc1c6 Bh3xg2+ Kh1xg2 Bd4c5 Rc6xa6 Nf8d7 a3a4 Nd7f6 a4a5 Nf6xd5 Kg2f3 Kg8g7 Kf3e4 Nd5f6+ Ke4f3 Nf6g4 h2h3 Ng4e3 Ra6c6 Ne3d5 a5a6 Kg7f7 Rc6c8 Kf7e7) +0.57/32 18 } 28. Bc2 { (Bd3c2 h5h4 Bc2a4 Re8d8 Rg2g1 Qh3xf1 Rg1xf1 Bc8f5 Rf1e1 Re7xe1+ Rc1xe1 Bg7d4 Ba4c6 Nf8h7 Kh1g2 Nh7f6 Nc3e2 h4h3+ Kg2f3 Bf5e4+ Kf3g3 Bd4b2) -0.04/22 13 } 28... Bg4 { (Bc8g4 Rg2g3 Bg7xc3 Bd2xc3 Qh3xf1+ Rc1xf1 Bg4e2 Rf1g1 Kg8f7 f4f5 h5h4 Rg3h3 Be2xc4 f5xg6+ Kf7g8 Rg1c1 Re7e3 Rh3xe3 Re8xe3 Bc3f6 h4h3 Bc2f5 Re3f3 Bf5xh3 b6b5 g6g7 Rf3xh3 g7xf8Q+ Kg8xf8 Rc1c3 Bc4xd5+ Kh1g1 Rh3h7 h2h4 Kf8e8 Bf6g5 Ke8d7 Kg1f2 Rh7f7+ Kf2g3 Bd5e4 h4h5 d6d5 Rc3e3 Rf7f5) +0.96/30 24 } 29. Bd1 { (Bc2d1 Bg7d4 Bd1xg4 h5xg4 b4b5 a6a5 Rg2g3 Qh3h5 Qf1d1 Bd4f2 Rg3g2 Bf2e3 Bd2xe3 Re7xe3 Qd1g1 Re3f3 Rg2xg4 Re8e3 Nc3b1 Re3e2) -0.44/20 10 } 29... Bd4 { (Bg7d4 Bd1xg4 h5xg4 Qf1d1 Qh3f3 Qd1xf3 g4xf3 Rg2g3 Bd4e3 Nc3b1 Be3xd2 Nb1xd2 Re7e1+ Rc1xe1 Re8xe1+ Rg3g1 Re1e3 Rg1f1 Re3xa3 Rf1xf3 Ra3a2 Nd2e4 Ra2a4 Rf3b3 a6a5 b4xa5 b6xa5 Rb3c3 Nf8d7 Rc3c2 Ra4b4 Kh1g2 Nd7b6 Ne4d2 Kg8f7 Kg2f3 a5a4 Kf3e3 a4a3 Ke3d4 Nb6a4 h2h4 Rb4b2 Rc2xb2 Na4xb2 Kd4c3 Kf7g8) +1.81/30 23 } 30. Bxg4 { (Bd1xg4 h5xg4 b4b5 a6a5 Rg2g3 Qh3h4 Rc1e1 Re7xe1 Bd2xe1 Qh4h5 Rg3xg4 Bd4xc3) -0.68/26 0 } 30... hxg4 { (h5xg4 Rg2g3 Qh3h5 Rg3g2 Bd4e3 Bd2xe3 Re7xe3 Qf1g1 Re3h3 Nc3e2 Qh5f5 Ne2g3 Qf5xf4 Rc1f1 Qf4e3 Rg2f2 Nf8d7 Qg1g2 Nd7e5 Ng3e4 Kg8g7 Ne4f6 Re8h8 Nf6xg4 Qe3g5 Rf2f4 Rh8h4 Ng4xe5 Rh3xh2+ Qg2xh2 Rh4xh2+ Kh1xh2 Qg5xe5 Kh2g1 Kg7h6 Kg1g2 Qe5e3 Rf1f3 Qe3e2+ Kg2g3) +1.84/32 15 } 31. Rg3 { (Rg2g3 Qh3h5 Rg3g2 Bd4xc3 Rc1xc3 Nf8h7 Rc3c1 Nh7f6 Qf1d1 Re8f8 Qd1c2 b6b5 Kh1g1 Nf6e4 c4xb5 a6xb5 Qc2d3 Qh5f5 Rc1a1 Ne4xd2 Qd3xf5 Rf8xf5 Rg2xd2) -0.75/23 8 } 31... Qh5 { (Qh3h5 Rg3g2 Bd4e3 Bd2xe3 Re7xe3 Qf1g1 Re3h3 Nc3e2 Qh5f5 Rc1f1 Rh3xa3 Ne2d4 Qf5e4 Nd4c2 Ra3f3 Rf1e1 Qe4xc4 Re1xe8 Rf3f1 Nc2e3 Rf1xg1+ Rg2xg1 Qc4xb4 Re8e7 Qb4xf4 Rg1f1 Qf4a4 Rf1c1 a6a5 Rc1xc7 b6b5) +1.90/27 2 } 32. a4 { (a3a4 Nf8d7 Rg3g2 Bd4e3 Qf1d1 Nd7f6 Nc3e2 Qh5h4 Qd1c2 Be3xd2 Qc2xd2 Nf6e4 Qd2e3 a6a5 b4xa5 Ne4c5 Qe3g3 Qh4xg3 Ne2xg3 Re7e1+ Rg2g1 Re1xc1 Rg1xc1 b6xa5) -0.81/24 10 } 32... Nd7 { (Nf8d7) +2.38/1 8 } 33. Rg2 { (Rg3g2 Bd4e3 Qf1d1 Nd7f6 Nc3e2 Qh5f5 Bd2xe3 Re7xe3 Qd1d2 Nf6h5 Qd2c2 Qf5e4 Qc2xe4 Re8xe4 Rc1c2 Kg8f7 a4a5 b6xa5 b4xa5 Kf7f6 Rg2f2 Re3a3 Rf2f1 Ra3f3 Rf1g1) -0.96/25 5 } 33... Be3 { (Bd4e3 Qf1d1 Qh5f5 Nc3e2 Nd7f6 Bd2xe3 Re7xe3 Qd1d2 Re3d3 Qd2c2 Nf6e4 Ne2g3 Qf5xf4 Ng3xe4 Re8xe4 Rg2xg4 Qf4xc1+ Qc2xc1 Re4xg4 a4a5 b6xa5 b4xa5 Kg8g7 Qc1b2+ Rd3d4 h2h3 Rg4e4 Kh1g1 Kg7f7 Qb2b7 Rd4xc4 Qb7xa6 Re4e1+ Kg1g2) +2.32/28 19 } 34. Qd1 { (Qf1d1 Nd7f6 Nc3e2 Qh5f5 a4a5 Nf6h5 Bd2xe3 Re7xe3 Qd1c2 Kg8h7 a5xb6 c7xb6 Rg2f2 Qf5e4+ Qc2xe4 Re8xe4 Ne2g3 Nh5xg3+ h2xg3 Re3xg3 Rf2a2 Rg3b3 Ra2xa6 Rb3xb4 Ra6a7+) -0.94/25 0 } 34... Nf6 { (Nd7f6 Nc3e2 Qh5f5 Bd2xe3 Re7xe3 Qd1d2 Re3d3 Qd2c2 Re8e3 Ne2g3 Qf5xf4 Rc1f1 Qf4e5 Qc2b2 Qe5xb2 Rg2xb2 Nf6d7 a4a5 Rd3c3 c4c5 b6xc5 b4b5 a6xb5 Rb2xb5 Rc3a3 Rb5b7 Ra3xa5 Rb7xc7 Nd7e5) +2.88/28 17 } 35. Ne2 { (Nc3e2 Qh5f5 Bd2xe3 Re7xe3 Qd1d2 Re3d3 Qd2c2 Nf6h5 a4a5 b6xa5 b4xa5 Kg8f7 Ne2g3 Nh5xg3+ Rg2xg3 Rd3d4 Rg3c3 Qf5xf4 Qc2b1 Kf7g7 Qb1b2 Re8h8 Kh1g1 Rd4d2 Rc3c2+) -1.22/25 0 } 35... Qf5 { (Qh5f5 Qd1c2 Nf6h5 Bd2xe3 Re7xe3 a4a5 b6xa5 b4xa5 Re8e4 Rc1g1 Kg8f7 Ne2g3 Nh5xg3+ h2xg3 Re4xf4 Qc2xf5+ Rf4xf5 Rg1c1 Kf7f6 Kh1g1 Re3a3 Rc1e1 Ra3c3 Re1e6+ Kf6f7 Rg2h2 Rc3c1+ Kg1g2 Rf5h5 Rh2xh5 g6xh5 Re6h6 Rc1xc4 Rh6xh5 Rc4c2+ Kg2g1 Kf7f6 Rh5h4 Kf6f5 Kg1h1 Rc2a2) +3.00/29 18 } 36. Qc2 { (Qd1c2 Nf6h5 Bd2xe3 Re7xe3 b4b5 a6xb5 c4xb5 Re8e4 Qc2d2 Re4e7 Ne2d4 Qf5e4 Nd4c2 Re3d3 Qd2e1 Qe4xg2+ Kh1xg2 Nh5xf4+ Kg2h1 Re7xe1+ Nc2xe1 Rd3d2 Rc1a1) -1.27/26 0 } 36... Nh5 { (Nf6h5 Bd2xe3 Re7xe3 a4a5 b6xa5 b4xa5 Re8e4 Rc1g1 Kg8f7 Ne2g3 Nh5xg3+ h2xg3 Re4xf4 Qc2xf5+ Rf4xf5 Rg1c1 Kf7f6 Kh1h2 Rf5h5+ Kh2g1 Re3a3 Rg2f2+ Rh5f5 Rc1e1 Rf5xf2 Kg1xf2 Ra3xa5 Kf2e3 Kf6f5 Ke3d4 Ra5a3 Re1e7 Ra3xg3 Re7xc7 Rg3a3 Rc7e7 Kf5g5 Re7e2 a6a5 Re2g2 g4g3) +3.19/30 26 } 37. Bxe3 { (Bd2xe3 Re7xe3 b4b5 a6xb5 a4xb5 Re8e4 Qc2a2 Nh5xf4 Ne2xf4 Re4xf4 Kh1g1 Re3f3 Qa2e2 Rf4e4 Qe2a2 Kg8h7 Qa2a1 Qf5f4 Kg1h1 Re4xc4 Rc1g1 Qf4f7 Rg1e1 Rc4f4) -1.48/27 0 } 37... Rxe3 { (Re7xe3 b4b5 a6a5 Ne2d4 Qf5xc2 Rg2xc2 Nh5xf4 Rc1f1 Re8e4 Rc2f2 g6g5 Nd4e6 Re3f3 Rf2xf3 g4xf3 h2h3 Nf4xe6 d5xe6 Re4f4 Kh1h2 Kg8f8 Kh2g3 Rf4xc4 Rf1xf3+ Kf8e7 Rf3f5 Rc4xa4 Rf5xg5 Ke7xe6 h3h4 Ra4c4 h4h5 a5a4 h5h6 a4a3) +3.31/28 11 } 38. a5 { (a4a5 Re8e4 Rc1g1 b6xa5 b4xa5 Nh5xf4 Ne2xf4 Re4xf4 c4c5 Kg8h7 c5xd6 c7xd6 Qc2c7+ Kh7h6 Qc7b8 Qf5e5 Qb8b2 Re3d3 Qb2xe5 d6xe5 Rg2xg4 Rf4xg4 Rg1xg4 Rd3xd5 Rg4a4 Kh6g5) -1.81/26 32 } 38... bxa5 { (b6xa5 b4xa5 Re8e4 Rc1g1 Kg8f7 Rg1f1 Re3f3 Rf1g1 Nh5xf4 Ne2g3 Rf3xg3 Rg2xg3 Nf4h3 Rg3xh3 g4xh3 Qc2d3 Re4d4 Qd3e2 Qf5e4+ Qe2xe4 Rd4xe4 Rg1c1 Re4e2 Kh1g1 Re2g2+ Kg1h1 g6g5 c4c5 Rg2a2 Kh1g1 Ra2xa5 c5xd6 c7xd6 Kg1f2 Ra5xd5 Rc1a1 a6a5 Kf2g3 Rd5c5 Kg3xh3 d6d5 Ra1f1+ Kf7g6 Rf1f3 d5d4 Rf3d3) +3.56/28 10 } 39. bxa5 { (b4xa5 Re8e4 Rc1g1 Nh5xf4 Ne2xf4 Re4xf4 c4c5 Kg8h7 c5xd6 c7xd6 Qc2c7+ Kh7h6 Qc7c1 Qf5e5 Qc1b2 Re3d3 Qb2xe5 d6xe5 Rg2xg4 Rf4xg4 Rg1xg4 Rd3xd5 Rg4c4 Rd5xa5 Kh1g2 Kh6g5 h2h4+ Kg5h5) -1.87/28 24 } 39... R8e4 { (Re8e4 Rc1b1 Nh5xf4 Ne2xf4 Re3e1+ Rg2g1 Re1xg1+ Rb1xg1 Qf5xf4 Qc2g2 Qf4e5 Qg2g3 Qe5f5 Qg3d3 Kg8g7 Qd3c3+ Kg7f7 Qc3d3 Qf5e5 Qd3f1+ Re4f4 Qf1d3 Kf7g7 Rg1d1 Rf4e4 Kh1g1 Kg7h6 Qd3g3 Qe5xg3+ h2xg3 Re4xc4 Rd1b1 Kh6g5 Rb1b7 Rc4c5 Kg1f2 Rc5xd5 Rb7xc7) +3.82/32 5 } 40. Rf1 { (Rc1f1 Re3f3 Rg2g1 Kg8f7 Ne2g3 Nh5xg3+ h2xg3 g6g5 Qc2h2 g5xf4 Rf1xf3 g4xf3 g3g4 Qf5g6 Rg1f1 Kf7g7 Qh2h3 Qg6h6 Rf1xf3 Re4xc4 Rf3b3 Rc4c1+ Kh1g2) -2.31/23 11 } 40... Rf3 { (Re3f3 Rf1g1 Nh5xf4 Ne2g3 Rf3xg3 Rg2xg3 Nf4e2 Qc2d3 Ne2xg1 Rg3xg1 Kg8g7 Rg1f1 Qf5e5 Rf1d1 g6g5 Kh1g1 Re4e3 Qd3d4 Re3e1+ Kg1g2 Re1xd1 Qd4xd1 Qe5e4+ Kg2g3 Qe4f4+ Kg3g2 Qf4xc4 Kg2g1 Kg7g6 Kg1g2 Qc4e4+ Kg2g1 Kg6h6 Qd1d2 Qe4f3 Qd2g2 Qf3d1+ Kg1f2 Qd1d2+ Kf2f1 Qd2xa5 Qg2e4 Qa5a1+ Kf1f2 Qa1e5 Qe4xe5) +4.11/29 20 } 41. Rd1 { (Rf1d1 Nh5xf4 Ne2xf4 Rf3xf4 Kh1g1 Qf5e5 Qc2b1 Kg8f7 Qb1a1 Qe5xa1 Rd1xa1 Re4xc4 Rg2d2 Kf7f6 Kg1g2 Kf6e5 Ra1e1+ Rf4e4 Re1xe4+ Ke5xe4 Kg2g3 Rc4c5 Kg3xg4 Rc5xd5 Rd2c2) -2.38/25 0 } 41... Nxf4 { (Nh5xf4 Ne2xf4 Rf3xf4 Kh1g1 Qf5e5 Qc2b1 Kg8h7 Qb1a1 Qe5xa1 Rd1xa1 Re4xc4 Rg2d2 Kh7h6 Kg1g2 Kh6g5 Ra1a2 Rc4c5 Kg2g3 Rf4f3+ Kg3g2 Rf3f5 Ra2c2 Rc5xc2 Rd2xc2 Rf5xd5 Rc2xc7 Rd5xa5 Rc7c2 Ra5d5 Rc2a2 Kg5h4 Kg2f2 a6a5 Kf2e3 Rd5e5+ Ke3d4 g4g3 h2xg3+ Kh4xg3 Ra2a3+ Kg3g4 Kd4d3 Kg4f5) +4.36/30 9 } 42. Nxf4 { (Ne2xf4 Rf3xf4 Kh1g1 Qf5e5 Qc2b1 Kg8h7 Qb1a1 Qe5xa1 Rd1xa1 Re4xc4 Rg2d2 Rf4f5 Ra1b1 Rc4c5 Rb1b7 Kh7h6 Kg1g2 Kh6g5 Rb7a7 Rc5xa5 Ra7xc7 Ra5xd5 Rd2a2 Rd5a5 Rc7c2 Ra5xa2 Rc2xa2) -2.63/27 10 } 42... Rfxf4 { (Rf3xf4 Qc2d3 Re4xc4 Rg2d2 Qf5xd3 Rd2xd3 Kg8g7 Rd1d2 Kg7h6 Rd3a3 Kh6g5 Ra3g3 Rc4c5 Rg3a3 Rf4f5 Kh1g2 Rf5xd5 Rd2a2 Rd5d1 Ra3g3 Rc5c1 Kg2f2 Rd1f1+ Kf2g2 Rf1g1+ Kg2f2 Rc1f1+ Kf2e2 Rg1xg3 Ke2xf1 Rg3c3 Kf1f2 Rc3d3 Ra2b2 Rd3d1) +4.75/31 10 } 43. Qa2 { (Qc2a2 Rf4f1+ Rd1xf1 Qf5xf1+ Rg2g1 Qf1d3 Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 c7c6 Rh7c7 Rc5xa5 Rc7xc6 Kf8e7 Rc6c4) -2.64/23 10 } 43... Rf1+ { (Rf4f1+ Rd1xf1 Qf5xf1+ Rg2g1 Qf1d3 Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 Kf8e8 Kg1g2 Ke8d8 Rh7h4 Rc5g5 Kg2g3 Kd8d7 Rh4h7+ Kd7c6 Rh7g7 Rg5xa5 Kg3xg4 g6g5 Rg7f7 Ra5c5 Rf7f3 a6a5 Rf3a3 Kc6b5 Ra3b3+ Kb5c4 Rb3b7 a5a4 Rb7a7 Kc4c3 Kg4h5 Kc3b4 Ra7b7+ Rc5b5 Rb7xc7 a4a3) +5.22/28 11 } 44. Rxf1 { (Rd1xf1 Qf5xf1+ Rg2g1 Qf1d3 Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 Kf8e8 Kg1g2 Ke8d8 Rh7h4 Rc5g5 Kg2g3 Kd8d7 Rh4h6 Kd7c6 Rh6h4 Rg5xa5 Rh4xg4 Ra5a3+ Kg3f2 Ra3a2+) -3.51/30 9 } 44... Qxf1+ { (Qf5xf1+ Rg2g1 Qf1d3 Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 Kf8e8 Rh7g7 g6g5 Kg1f2 Ke8d8 Rg7g8+ Kd8d7 Kf2g3 Rc5xa5 Kg3xg4 Ra5e5 Rg8g7+ Kd7c6 Rg7g8 a6a5 Kg4h5 a5a4 Rg8a8 Kc6b5 Ra8a7 c7c5 Ra7b7+ Kb5c4 Rb7a7 Kc4b4 Ra7b7+ Kb4c3 Rb7a7 Kc3b3 Ra7b7+ Kb3c2 Rb7a7) +5.40/28 1 } 45. Rg1 { -3.51/30 0 } 45... Qd3 { (Qf1d3 Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Kg1f2 Rc5xa5 Re1c1 Ra5c5 Rc1a1 Kg8f7 Kf2g3 Rc5c2 Ra1d1 a6a5 Rd1d4 Rc2a2 Rd4f4+ Kf7g7 Rf4xg4 a5a4 h2h4 Ra2a1 Rg4c4 c7c5 Kg3f4 a4a3 Rc4c2 a3a2 Rc2f2 c5c4) +5.60/28 9 } 46. Qf2 { (Qa2f2 Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7d7 Kf8e8 Rd7h7 Ke8d8 Rh7h4 Rc5g5 Kg1g2 Kd8d7 Kg2f2 Kd7c6 Kf2g3 Rg5xa5 Rh4xg4 g6g5 Kg3f3 Ra5e5 h2h4 g5xh4 Rg4xh4 a6a5) -3.55/30 22 } 46... Rxc4 { (Re4xc4 Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7d7 Kf8e8 Rd7h7 Ke8d8 Rh7h4 Rc5g5 Rh4h8+ Kd8d7 Rh8h7+ Kd7c6 Rh7g7 Rg5xa5 Rg7xg6 Ra5a4 Rg6e6 a6a5 Kg1f2 Ra4b4 Re6e2 a5a4 Re2a2 Kc6d5 Ra2d2+ Kd5e5 Rd2a2 c7c5 Kf2g3 d6d5 Ra2d2 Ke5e6 Rd2a2 Ke6f5) +5.92/30 1 } 47. Re1 { (Rg1e1 Qd3xd5+ Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 Kf8e8 Kg1f2 Ke8d8 Rh7h4 Rc5g5 Kf2g2 Kd8d7 Kg2f2 Rg5h5 Rh4xg4 Rh5xh2+ Kf2e3 Rh2a2 Rg4xg6 c7c5 Ke3d3 Ra2xa5 Kd3c3 Ra5a3+ Kc3b2) -3.62/29 20 } 47... Qxd5+ { (Qd3xd5+ Kh1g1 Qd5c5 Kg1f1 Qc5xf2+ Kf1xf2 Kg8f7 Re1d1 Kf7e6 Rd1b1 Rc4a4 Rb1b7 c7c5 Rb7g7 Ke6f5 Rg7d7 Ra4xa5 Rd7xd6 Ra5a2+ Kf2e3 Kf5g5 Rd6d5+ Kg5h4 Rd5d8 Ra2xh2 Rd8h8+ Kh4g3 Rh8a8 c5c4 Ke3d4 Kg3f4 Kd4c3) +6.02/25 6 } 48. Kg1 { (Kh1g1 Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7h7 Kf8e8 Kg1f2 Ke8d8 Rh7h4 Rc5g5 Kf2e3 Kd8d7 Rh4h6 Rg5xa5 Rh6xg6 Ra5a4 Rg6g7+ Kd7c6 Ke3d2 d6d5 Kd2c3 Kc6b5 Rg7g8 c7c5 Rg8b8+ Kb5c6 Rb8c8+) -3.61/29 14 } 48... Qc5 { (Qd5c5 Qf2xc5 Rc4xc5 Re1e7 Kg8f8 Re7e6 Kf8f7 Re6e4 Rc5xa5 Re4f4+ Kf7e6 Rf4xg4 Ke6f7 Rg4c4 c7c5 Kg1f2 d6d5 Rc4c1 Ra5a2+ Kf2g3 c5c4 h2h3 Ra2a3+ Kg3f4 Kf7f6 Rc1d1 Ra3xh3 Rd1xd5 c4c3 Rd5d6+ Kf6f7 Rd6d7+ Kf7e6 Rd7d1 Rh3h2 Kf4g3 Rh2a2 Kg3f4) +6.22/29 2 } 49. Re8+ { (Re1e8+ Kg8h7 Qf2xc5 Rc4xc5 Kg1f2 Kh7h6 Re8e7 Kh6g5 Re7d7 Rc5xa5 Rd7xc7 Ra5a2+ Kf2g3 Ra2a3+ Kg3g2 a6a5 Rc7d7 a5a4 Rd7xd6 Ra3b3 Rd6a6 a4a3 Ra6a8 Rb3b2+ Kg2g3 a3a2 Ra8a5+) -3.42/27 6 } 49... Kg7 { (Kg8g7 Qf2xc5 Rc4xc5 Re8e7+ Kg7f6 Re7d7 d6d5 Kg1g2 Kf6g5 Rd7g7 Rc5xa5 Rg7xc7 Ra5a2+ Kg2g3 Ra2a3+ Kg3g2 d5d4 Rc7c1 d4d3 Rc1d1 Ra3a2+ Kg2f1 Ra2xh2 Rd1xd3 Rh2a2 Rd3d6 a6a5 Rd6d5+ Kg5f4 Rd5d4+ Kf4e3 Rd4d8 g6g5 Rd8h8 a5a4 Rh8h7) +6.61/28 10 } 50. Re7+ { (Re8e7+ Kg7h6 Qf2xc5 Rc4xc5 Kg1g2 Kh6g5 Kg2f2 Rc5f5+ Kf2g3 Rf5xa5 Re7xc7 Ra5a3+ Kg3g2 a6a5 Rc7d7 a5a4 Rd7xd6 Ra3a1 Kg2g3 a4a3 Rd6d5+ Kg5h6 Rd5a5 a3a2 Kg3g2 Kh6g7 Ra5a4 Kg7f6) -3.89/28 15 } 50... Kh6 { (Kg7h6 Qf2xc5 Rc4xc5 Kg1f2 Kh6g5 Kf2g3 d6d5 Re7e5+ Kg5f6 Re5e2 Rc5xa5 Re2d2 Kf6e5 Rd2e2+ Ke5f5 Re2f2+ Kf5e4 Rf2e2+ Ke4d3 Re2e5 Kd3d4 Re5g5 c7c5 Rg5xg4+ Kd4d3 Kg3h4 d5d4 Rg4g3+ Kd3d2 Rg3g4 Kd2c3 Kh4g5 d4d3 Rg4g1 c5c4+ Kg5f6 Kc3c2 Rg1h1) +7.34/26 9 } 51. Qxc5 { (Qf2xc5 Rc4xc5 Kg1f2 Kh6g5 Re7d7 Rc5xa5 Rd7xc7 Ra5a2+ Rc7c2 Ra2xc2+) -4.07/28 0 } 51... Rxc5 { (Rc4xc5 Re7d7 d6d5 Rd7d8 Rc5xa5 Kg1f2 Kh6g5 Rd8d7 c7c6 Rd7d6 Ra5a2+ Kf2g3 Ra2a3+ Kg3f2 Ra3a5 Rd6xc6 Ra5a2+ Kf2g3 Ra2a3+ Kg3f2 d5d4 Kf2g2 d4d3 Kg2f2 Ra3a2+ Kf2g3 Kg5f5 Rc6d6 d3d2 Rd6d4 Kf5e5 Rd4d3 a6a5 Rd3d7 Ra2c2 Kg3g2) +7.81/27 16 } 52. Kf2 { (Kg1f2 Kh6g5 Kf2g1 Rc5xa5 Re7xc7 Ra5a3 Kg1g2 a6a5 Rc7d7 a5a4 Rd7xd6 Ra3b3 Rd6a6 a4a3 Ra6a8 Kg5f5 Kg2f2 Rb3b2+ Kf2e3 Kf5g5 Ra8a5+ Kg5h4 Ra5a7 Rb2xh2 Ra7h7+ Kh4g3 Rh7a7 Rh2a2 Ke3d3) -4.37/29 0 } 52... Kg5 { (Kh6g5 Kf2g3 d6d5 Re7e5+ Kg5f6 Re5e1 Kf6f5 Re1d1 Rc5xa5 Kg3h4 Kf5f4 Rd1f1+ Kf4e3 Rf1e1+ Ke3f3 Re1f1+ Kf3e2 Rf1f4 Ke2e3 Rf4f1 d5d4 Rf1e1+ Ke3d2 Re1g1 d4d3 Kh4xg4 Kd2e3 Kg4h3 d3d2 Rg1g3+ Ke3e4 Rg3g4+ Ke4d3 Rg4g3+ Kd3c2 Rg3g2) +8.15/27 17 } 53. Rg7 { (Re7g7 Rc5f5+ Kf2e2 Rf5xa5 Ke2d3 Ra5a2 Rg7h7 Ra2a3+ Kd3e4 Ra3h3 Rh7xc7 Rh3xh2 Rc7c3 Rh2e2+ Ke4d3 Re2a2 Kd3c4 Ra2a5 Rc3e3 Ra5c5+ Kc4d4 Rc5e5 Re3b3 Kg5f4) -4.57/24 0 } 53... d5 { (d6d5 Rg7d7 Rc5xa5 Kf2g3 Ra5a3+ Kg3g2 c7c6 Rd7d6 Ra3c3 Rd6d7 a6a5 Rd7a7 d5d4 Kg2f1 c6c5 Ra7h7 Rc3f3+ Kf1g2 Rf3a3 Kg2f2 a5a4 Kf2e2 Ra3e3+ Ke2d2 a4a3 Rh7f7 Re3b3 Rf7a7 Rb3h3 Ra7a6 Rh3xh2+) +9.70/25 15 } 54. Re7 { (Rg7e7 c7c6 Re7e6 Rc5xa5 Re6xc6 Ra5a2+ Kf2g1 Kg5f5 Rc6c7 a6a5 Rc7f7+ Kf5e5 Rf7e7+ Ke5d6 Re7g7 Ra2a1+ Kg1f2 a5a4 Rg7xg6+ Kd6c5 Rg6xg4 a4a3 Rg4g2 Ra1a2+) -4.38/26 15 } 54... Rxa5 { (Rc5xa5 Re7d7 Ra5a2+ Kf2g3 Ra2a3+ Kg3g2 c7c6 Kg2f2 a6a5 Rd7c7 Ra3a2+ Kf2g3 Ra2c2 Rc7e7 Rc2c3+ Kg3f2 a5a4 Re7e5+ Kg5f4 Re5e2 a4a3 Re2d2 c6c5 Kf2e2 Rc3b3 Rd2d1 Rb3h3 Ke2f1 Rh3xh2 Kf1g1 Rh2c2 Rd1f1+ Kf4g5 Kg1h1 c5c4 Rf1d1) +11.60/27 16 } 55. Rxc7 { (Re7xc7 Ra5a2+ Kf2g3 Ra2a3+ Kg3g2 Kg5f4 Rc7d7 Kf4e4 Rd7e7+ Ke4d3 Re7g7 a6a5 Rg7xg6 Ra3a2+ Kg2g3 a5a4 Rg6xg4 d5d4 Rg4g8 Ra2a1 Rg8a8 a4a3 h2h3 a3a2 Kg3g2 Kd3d2) -5.48/26 27 } 55... Ra2+ { (Ra5a2+ Kf2g3 Ra2a3+ Kg3f2 a6a5 Rc7a7 a5a4 Ra7a8 Ra3f3+ Kf2g2 a4a3 h2h4+ Kg5xh4 Ra8h8+ Kh4g5 Rh8c8 d5d4 Rc8h8 Rf3c3 Rh8h1 Rc3b3 Rh1f1 g4g3 Rf1d1 a3a2 Rd1a1 Rb3b2+ Kg2f3 g3g2 Ra1g1 Rb2b3+ Kf3e4 a2a1Q Rg1xg2+ Kg5h6) +17.51/25 25 } 56. Kg3 { (Kf2g3 Ra2a3+ Kg3g2 Kg5f4 Rc7h7 d5d4 Kg2f2 Ra3a2+ Kf2e1 Kf4e3 Rh7e7+ Ke3d3 Re7b7 Ra2a1+ Ke1f2 a6a5 h2h3 g4xh3 Rb7h7 Ra1a2+ Kf2g1 Kd3c2 Kg1h1 a5a4 Rh7c7+ Kc2d2 Kh1h2 Ra2a1 Rc7h7) -6.91/29 0 } 56... Ra3+ { (Ra2a3+) +22.37/26 53 } 57. Kf2 { (Kg3g2 Kg5f4 Rc7f7+ Kf4e4 Rf7f6 d5d4 Rf6e6+ Ke4d3 Kg2f2 Kd3c2 Re6c6+ Kc2d1 Rc6xg6 Ra3a2+ Kf2g3 d4d3 Rg6c6 d3d2 Kg3f4 Kd1e2 Rc6e6+ Ke2f2 Re6d6 Ra2a4+ Kf4f5 Kf2e2 Rd6e6+ Ke2d3 Re6d6+ Ra4d4 Rd6e6) -9.05/31 0 } 57... Ra2+ { (Ra3a2+ Kf2e3 Ra2xh2 Rc7c1 g4g3 Rc1f1 Kg5h4 Rf1f4+ Kh4h3 Rf4f8 d5d4+ Ke3e4 d4d3 Rf8d8 g3g2 Rd8h8+ Kh3g3 Rh8g8 Rh2h4+ Ke4e5 g2g1Q Rg8xg6+ Kg3f2 Rg6c6 d3d2 Rc6c2 Qg1g5+ Ke5e6 Rh4h7) +21.41/20 5 } 58. Kg3 { (Kf2g3 Ra2a3+ Kg3g2 a6a5 Rc7c5 Kg5h4 Rc5xd5 Ra3a2+ Kg2g1 a5a4) 0.00/76 6 } 58... Ra3+ { (Ra2a3+ Kg3g2 d5d4 Kg2f2 d4d3 Rc7d7 a6a5 Rd7c7 a5a4 Rc7c5+ Kg5h4 Kf2e3 Ra3a2 Ke3xd3 g4g3 Rc5c4+ Kh4h3 Rc4c3 Kh3xh2 Rc3c5 g3g2 Rc5e5 Ra2d2+ Kd3c4 g2g1Q Kc4b5 a4a3 Kb5a6 a3a2 Re5a5 a2a1R) +23.59/22 4 } 59. Kf2 { (Kg3f2 a6a5) 0.00/99 1 } 59... a5 { (a6a5 Rc7a7 a5a4 Ra7a8 Ra3f3+ Kf2e1 a4a3 Ke1e2 Rf3b3 Ra8a4 Rb3h3 Ke2f2 Kg5h4 Kf2g1 Rh3b3 Ra4a8 g4g3 h2h3 a3a2 Kg1g2 Rb3b2+ Kg2f3 g3g2 Ra8h8+ Kh4g5 h3h4+ Kg5f6 Rh8f8+ Kf6e7 Rf8b8 g2g1N+ Kf3g4 Rb2g2+ Kg4f4 a2a1Q Rb8b7+ Ke7d6 Rb7b6+ Kd6c5 Rb6b7 Qa1e1) +25.86/25 4 } 60. Kg2 { (Kf2g2 a5a4 Rc7d7 Ra3d3 Rd7a7 a4a3 Kg2f2 Rd3f3+ Kf2e1 Rf3h3 Ke1f1 Rh3b3 Kf1f2 Rb3b2+ Kf2g3 a3a2 Ra7a5 Rb2d2 Ra5a4 Kg5f5 Ra4f4+ Kf5e6 Rf4a4 Ke6e5 Ra4a7 Ke5f5 Ra7a8) -7.12/27 1 } 60... a4 { (a5a4 Kg2f2 Ra3b3 Rc7g7 Rb3h3 Kf2g1 a4a3 Rg7a7 Rh3d3 Ra7a4 Rd3b3 h2h4+ Kg5xh4 Ra4a8 d5d4 Kg1f1 d4d3 Ra8a6 Rb3b1+ Kf1f2 Rb1b2+ Kf2e3 d3d2 Ke3e4 Rb2b4+ Ke4e5 d2d1Q Ke5e6 Qd1e2+ Ke6f7 Qe2xa6) +27.98/23 4 } 61. Re7 { (Rc7e7 Ra3d3 Re7a7 a4a3 Ra7a5 Rd3d2+ Kg2g3 a3a2 Ra5a8 Kg5f5 Ra8f8+ Kf5e5 Rf8e8+ Ke5d4 Re8a8 Kd4e4 Ra8a7 Rd2b2 Kg3h4 d5d4 Ra7a6 Ke4f5 Ra6a7 Kf5f4 Ra7f7+ Kf4e3) -15.43/26 46 } 61... Rb3 { (Ra3b3 Kg2f2 a4a3 Re7a7 Rb3d3 Kf2f1 Rd3c3 Kf1g2 d5d4 Ra7a5+ Kg5h4 Ra5a4 Rc3b3 Kg2f1 Kh4g5 h2h3 g4xh3 Ra4a5+ Kg5h4 Ra5d5 a3a2 Kf1f2 a2a1Q Rd5d6 Qa1b2+ Kf2e1 h3h2 Rd6xd4+ Qb2xd4 Ke1f1 h2h1Q+ Kf1e2) +42.78/22 5 } 62. Kg1 { (Kg2g1 a4a3 Re7a7 Rb3b1+ Kg1f2 Rb1b2+ Kf2g3 a3a2 Ra7a5 Rb2d2 Ra5a7 Kg5f5 Ra7a3 Rd2d3+ Ra3xd3 a2a1Q Rd3xd5+ Kf5f6 Rd5d6+ Kf6e5 h2h3 Qa1g1+ Kg3h4 Qg1f2+ Kh4g5 Qf2f5+ Kg5h6 Ke5xd6) -21.34/32 17 } 62... a3 { (a4a3 Re7a7 d5d4 Kg1f2 Rb3f3+ Kf2g2 Rf3d3 Kg2f1 Rd3h3 Ra7a5+ Kg5h4 Ra5e5 a3a2 Re5e1 Rh3c3 Kf1f2 Rc3c2+ Kf2f1 Rc2b2 Re1d1 Rb2b1 Kf1e1 Rb1xd1+ Ke1xd1 a2a1R+) +45.94/19 4 } 63. Kf2 { (Kg1f2 a3a2 Re7a7 Rb3b2+ Kf2g3 Kg5f5 Ra7a5 Kf5e4 Kg3h4 Rb2xh2+ Kh4g5 g4g3 Kg5f6 g3g2 Ra5a8 g2g1Q Ra8e8+ Ke4d3 Re8e6 a2a1Q+ Kf6e7 Rh2h7+ Ke7d6 Qg1b6+ Kd6xd5 Qa1d4+) -106.40/32 9 } 63... a2 { (a3a2 h2h4+ g4xh3/ep Re7a7 Rb3d3 Kf2e2 h3h2 Ke2xd3 h2h1Q Ra7a8 Qh1f3+ Kd3d2 Qf3f2+ Kd2d3 Qf2f5+ Kd3d2 Qf5h3 Kd2d1 Qh3d3+ Kd1e1 Qd3e3+ Ke1d1 Qe3g1+ Kd1d2 a2a1Q Ra8xa1 Qg1g2+ Kd2d1 d5d4 Kd1e1) +49.09/17 4 } 64. Ra7 { (Re7a7 Rb3b2+ Kf2g3 d5d4 Ra7a4 d4d3 Ra4xg4+ Kg5h6 Rg4h4+ Kh6g7 Rh4a4 d3d2 Ra4d4 Rb2b3+ Kg3g2 a2a1Q Rd4xd2 Qa1a8+ Rd2d5 Qa8c6 Kg2f2 Qc6f6+ Kf2g1 Qf6f3 Rd5d7+ Kg7h6 Rd7h7+) -M73/27 20 } 64... g3+ { (g4g3+ h2xg3 d5d4 g3g4 Kg5xg4 Kf2g1 Rb3d3 Ra7a5 Rd3c3 Kg1f2 Rc3f3+ Kf2g2 Rf3g3+ Kg2h2 d4d3 Ra5a7 Rg3h3+ Kh2g2 a2a1Q Ra7e7) +42.08/16 5 } 65. hxg3 { (h2xg3 Rb3b2+ Kf2f3 Kg5f5 Ra7a6 Kf5e5 Kf3g4 Ke5e4 Kg4g5 d5d4 g3g4 d4d3 Ra6e6+ Ke4d4 Re6e1 Rb2b1 Re1e7 a2a1Q Kg5h6 d3d2 Re7d7+ Kd4e3 Rd7e7+ Ke3f3 Kh6h7 Rb1b8 g4g5 Qa1h8+) -20.38/28 15 } 65... Rd3 { (Rb3d3) +42.08/16 0 } 66. Ra4 { (Ra7a4 a2a1Q Ra4xa1 Kg5g4 Ra1a4+ d5d4 Ra4a6 Rd3f3+ Kf2e1 g6g5 Ra6f6 Rf3xf6 Ke1e2 Kg4xg3 Ke2d2) -M70/38 5 } 66... d4 { (d5d4) +314.76/19 9 } 67. Ra6 { (Ra4a6 Kg5f5 Ra6a5+ Kf5g4 Ra5a6 a2a1Q Ra6xg6+ Kg4f5 g3g4+ Kf5xg6) -M69/34 12 } 67... Re3 { (Rd3e3) +314.76/19 0 } 68. Ra4 { (Ra6a4 a2a1Q Ra4xa1 Kg5g4 Ra1a6 Re3f3+ Kf2e2 g6g5 Ra6d6 Kg4xg3 Rd6xd4 g5g4 Rd4e4) -M69/41 6 } 68... Rb3 { (Re3b3 Ra4a5+ Kg5g4 Kf2e2 d4d3+ Ke2e3 Kg4xg3 Ke3e4 a2a1Q Ra5g5+ Kg3h3 Rg5xg6 Rb3b4+ Ke4f5 Qa1f1+ Kf5e5 Rb4b5+ Ke5e4 d3d2 Rg6g2 Qf1f5+ Ke4d4 d2d1Q+ Rg2d2 Qd1xd2+ Kd4c4 Qd2d5+ Kc4c3) +314.76/19 3 } 69. Ra6 { (Ra4a6 a2a1Q Ra6xa1 Kg5g4 Ra1a6 Rb3f3+ Kf2e1 g6g5 Ra6a4 Kg4xg3 Ra4xd4 g5g4 Ke1d2 Rf3f4 Rd4xf4) -M69/15 7 } 69... Re3 { (Rb3e3 Ra6a8 Re3d3 Kf2e1 Kg5g4 Ke1f2 Rd3xg3 Kf2e2 d4d3+ Ke2d1 g6g5 Ra8a4+ Kg4f3 Kd1d2 Rg3g2+ Kd2c3 a2a1Q+ Kc3b4 Rg2g4+ Kb4a5 Rg4xa4+ Ka5b5 Kf3g3) +42.45/16 11 } 70. Ra4 { (Ra6a4 a2a1Q Ra4xa1 Kg5g4) 0.00/69 5 } 70... Rb3 { (Re3b3 Ra4xa2 Kg5g4 Ra2a6 Rb3f3+ Kf2e2 g6g5 Ra6a7 Rf3xg3 Ke2d2 Rg3b3 Kd2c1 Rb3c3+ Kc1d1 Kg4h4 Ra7a5 Rc3e3 Ra5a1 Kh4g4 Ra1a6) +38.97/15 4 } 71. Ra6 { (Ra4a6 a2a1Q Ra6xa1 Kg5g4 Ra1a6 g6g5) 0.00/71 6 } 71... Kf5 { (Kg5f5 g3g4+ Kf5g5 Kf2g2 Kg5xg4 Kg2h2 Rb3g3 Ra6b6 Kg4h4 Rb6b5 Rg3g2+ Kh2h1 a2a1Q+ Kh1xg2 g6g5 Rb5b6 Kh4h5 Rb6d6 Qa1c3) +49.09/15 5 } 72. Ra4 { (Ra6a4 g6g5 Ra4a5+ Kf5g4 Ra5e5 Rb3b2+ Re5e2 Rb2xe2+ Kf2xe2) -M68/33 11 } 72... Rb2+ { (Rb3b2+ Kf2g1) +7.37/1 3 } 73. Kf3 { (Kf2f3 a2a1Q Ra4a5+ Kf5e6 Ra5a6+ Ke6d5 Ra6a5+ Kd5c6 Ra5a8) -M70/26 36 } 73... Rb3+ { (Rb2b3+ Kf3f2 Rb3d3 Kf2e2 Rd3xg3 Ra4a6 Kf5g5 Ke2f2 Kg5g4 Ra6b6 Rg3b3 Rb6xb3 a2a1Q Rb3d3 g6g5 Rd3g3+ Kg4f5 Kf2e2 Kf5f4 Rg3g2 g5g4) +47.13/16 5 } 74. Kf2 { (Kf3f2 a2a1Q) 0.00/96 5 } 74... Rd3 { (Rb3d3 Ra4a5+ Kf5g4 Kf2g1 Rd3d2 Ra5a4 Rd2b2 Ra4a7 Kg4xg3 Kg1f1 Rb2b3 Ra7a4 a2a1Q+ Ra4xa1 d4d3 Kf1g1 g6g5) +47.13/16 0 } 75. Ra6 { (Ra4a6 a2a1Q Ra6xa1 Kf5g4 Ra1a6 g6g5 Ra6a5 Rd3f3+ Kf2e2 Rf3xg3 Ra5a4 Rg3e3+ Ke2d2 Kg4f3 Ra4xd4 g5g4 Rd4d7 g4g3 Rd7f7+ Kf3e4 Rf7e7+) -M69/33 5 } 75... Rc3 { (Rd3c3 Ra6a4 Rc3d3 Ra4a7 Kf5g4 Kf2g2 Rd3d2+ Kg2f1 Kg4xg3 Ra7a6 Rd2f2+ Kf1g1 Rf2g2+ Kg1f1 a2a1Q+ Ra6xa1 d4d3 Ra1b1 Rg2c2) +M454/15 9 } 76. Ra4 { (Ra6a4 g6g5 Ra4a6 Kf5g4 Ra6e6 Rc3c2+ Re6e2 Rc2xe2+ Kf2xe2) -M68/32 10 } 76... Rc2+ { (g6g5) +313.62/16 0 } 77. Kf3 { (Kf2f3 a2a1Q Ra4xa1 Rc2c3+ Kf3f2 Kf5g4 Ra1a6 g6g5 Ra6a5 Rc3f3+ Kf2e2 Rf3xg3) -M70/25 10 } 77... Rc3+ { (Rc2c3+ Kf3f2 g6g5 Ra4xa2 Kf5g4 Kf2e1 Rc3xg3 Ke1d1 Rg3h3 Kd1e1 Rh3h1+ Ke1d2 Rh1g1 Ra2a5 Kg4f4 Ra5a2 Kf4f5 Ra2a5+ Kf5g4 Kd2c2) +41.54/16 9 } 78. Kf2 { (Kf3f2 a2a1Q) 0.00/110 5 } 78... Rd3 { (Rc3d3 Ra4a8 Kf5g4 Ra8a5 g6g5 Kf2g2 Rd3c3 Ra5a6 Rc3c2+ Kg2g1 d4d3 Kg1f1 a2a1Q+ Ra6xa1 Kg4xg3 Ra1d1 Rc2f2+ Kf1g1 d3d2 Rd1a1 Rf2g2+ Kg1f1 Kg3f3) +41.54/16 0 } 79. Ra6 { (Ra4a6 a2a1Q Ra6xa1 Kf5g4) 0.00/73 5 } 79... Kg5 { (Kf5g5) +313.62/17 9 } 80. Rxa2 { (Ra6xa2 Kg5g4 Ra2a6 g6g5 Ra6g6 Rd3f3+ Kf2e1 Rf3xg3 Ke1f2 Rg3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+ Ke1f2 Re3f3+ Kf2e1 Rf3e3+) -M68/40 6 } 80... Kg4 { (Kg5g4 Ra2a6 g6g5 Ra6a5 Rd3f3+ Kf2e1 Rf3xg3 Ke1f2 Rg3b3 Kf2g1 Kg4h4 Kg1f2 Rb3c3 Ra5b5 Rc3a3 Kf2g1 Kh4g4 Rb5d5 Ra3a4 Rd5c5 Ra4a1+ Kg1h2 Ra1a3) +41.54/17 5 } 81. Ra6 { (Ra2a6 Rd3f3+ Kf2e1 g6g5 Ke1e2 Rf3xg3 Ra6f6 Kg4h5 Ke2d2 Rg3h3 Rf6d6 Rh3h2+ Kd2e1 Rh2h4) -M67/65 0 } 81... g5 { (g6g5 Ra6a5 Rd3f3+ Kf2g1 Rf3xg3+ Kg1f1 Rg3h3 Kf1g2 Rh3e3 Ra5a8 Kg4h4 Kg2f2 Kh4h3 Ra8a5 Kh3g4 Ra5a6 Re3f3+ Kf2e1 Kg4g3 Ra6d6) +41.54/15 4 } 82. Ra5 { (Ra6a5 Rd3f3+ Kf2e1 Rf3xg3) -M66/50 10 } 82... Rb3 { (Rd3b3 Ra5f5 Kg4xf5 Kf2e2 Rb3xg3 Ke2d2 Kf5e4 Kd2e2 Rg3e3+ Ke2d2 Ke4f4 Kd2d1 Kf4f5 Kd1c1 Re3e2 Kc1b1 Re2f2 Kb1c1 Rf2h2 Kc1b1 Rh2e2 Kb1c1) +41.54/15 0 } 83. Rc5 { (Ra5c5 Rb3f3+ Kf2g1 Rf3xg3+) -M66/43 12 } 83... Rf3+ { (Rb3f3+ Kf2e2 Rf3xg3 Ke2d1 Rg3c3 Rc5c8 Rc3d3+ Kd1c1 Rd3g3 Rc8c5 Rg3a3 Rc5c6 Kg4h4 Kc1d1 Kh4g4 Kd1c2 Ra3f3 Kc2c1) +44.21/16 10 } * [/pgn]
AndrewGrant
Posts: 1754
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Full name: Andrew Grant

Re: Ethereal: suboptimal moves in won endgame

Post by AndrewGrant »

ernest wrote: Sat Sep 15, 2018 5:04 pm This is a follow-up of my previous thread concerning the CCCC game #450, Nemorino-Ethereal
http://talkchess.com/forum3/viewtopic.php?f=2&t=68438

I am always appalled when I see a good program, here Ethereal, play a sequence of "stupid" (or very suboptimal) moves.
This was the case in an easily won endgame.

Maybe it shows an anomaly of Ethereal (access to Syzygy, or...) or a problem of CCCC (the game ended abruptly after move 83).
I went and stepped through the PGN with Ethereal running Analysis. It looks odd, but I don't think this is really an issue, on my part, or on CCCC's part.

If I'm reading the PGN correctly, there was 1, maybe more, single depth moves from Ethereal. That explains some of the moves, but not most.

Ethereal is known to repeat a position twice, when in the process of working out final solution. Furthermore, engines in general can make very strange moves when faced with a position that is a guaranteed win. Every line Ethereal played there still maintains a TB win.

Conclusion: Seems odds, but not a cause for concern in my view.
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ernest
Posts: 2041
Joined: Wed Mar 08, 2006 8:30 pm

Re: Ethereal: suboptimal moves in won endgame

Post by ernest »

AndrewGrant wrote: Sun Sep 16, 2018 4:18 am ..........
Conclusion: Seems odds, but not a cause for concern in my view.
OK thanks, Andrew !