Progress on Blunder

[algerbrex]

I decided not to continue this match of 50 games, since it is obvious that Stockfish 3 is about 450 to 550 ratings point higher than Blunder.

Engine Score St Bl S-B
1: Stockfish-3-64-ja 24.0/25 ························· 1111111111111011111111111 24.00
2: Blunder-windows 1.0/25 0000000000000100000000000 ························· 24.00

25 games played / Tournament is finished
Name of the tournament: Stockfish-3015
Site/ Country: DESKTOP-OFQ3C0P, United States
Level: Blitz 3/2
Hardware: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz 3.40 GHz 16.0GB Memory
Operating system: Windows 10 Home Home Edition (Build 9200) 64 bit
PGN-File: C:\Program Files (x86)\Arena\Tournaments\Stockfish-2600.pgn
Website:
E-Mail Address:

[pgn][Event "Blunder-2650"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.06.28"]
[Round "25"]
[White "Stockfish-3-64-ja"]
[Black "Blunder-windows"]
[Result "1-0"]
[BlackElo "2630"]
[ECO "D36"]
[Opening "QGD"]
[Time "07:40:32"]
[Variation "Exchange, Main Line, 9.Nf3 Re8 10.O-O Nf8 11.h3"]
[WhiteElo "2615"]
[TimeControl "180+2"]
[Termination "adjudication"]
[PlyCount "88"]
[WhiteType "program"]
[BlackType "program"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 {(Bf8-e7
Ng1-f3 Bc8-f5 Bf1-d3 Nf6-e4 Bg5xe7 Qd8xe7 O-O O-O Nc3-e2 Nb8-d7 Ra1-c1
Qe7-b4 b2-b3 Qb4-e7) -0.17/15 5} 7. Qc2 O-O {(O-O Ng1-f3 Be7-d6 Bf1-d3
h7-h6 Bg5-h4 Rf8-e8 O-O Bc8-g4 Bd3-e2 Nb8-d7 Bh4-g3 Bd6xg3 h2xg3 Ra8-c8)
-0.19/15 7} 8. Bd3 Nbd7 9. Nf3 {(Ng1-f3 h7-h6 Bg5-h4 Nd7-b6 O-O Bc8-g4
Nf3-e5 Bg4-e6 Rf1-e1 Kg8-h8 Bd3-f5 Nf6-d7 Bh4xe7 Qd8xe7 Bf5xe6 Qe7xe6
Ne5-d3 Nb6-c4 Nd3-f4 Qe6-e7 b2-b3) +0.56/19 9} Re8 {(Rf8-e8 O-O-O Nd7-f8
h2-h3 Nf8-g6 Kc1-b1) -0.09/15 7} 10. O-O {(O-O Nd7-f8 Nf3-e5 Nf6-g4 Bg5xe7
Qd8xe7 Ne5-f3 Nf8-g6 h2-h3 Ng4-f6 Rf1-d1 Bc8-e6 Rd1-c1 Qe7-c7 a2-a3 Be6-d7
Rc1-e1 b7-b6 Ra1-c1 c6-c5 Nc3-b5 Bd7xb5 Bd3xb5) +0.60/21 6} Nf8 {(Nd7-f8
Nf3-e5 a7-a5 f2-f4 Nf8-g6 Ra1-d1 Nf6-g4 Bg5xe7 Qd8xe7 Rd1-e1 Ng4-f6 Ne5xg6
h7xg6 f4-f5 g6xf5 Bd3xf5 Bc8xf5 Rf1xf5) -0.13/15 7} 11. h3 {(h2-h3 Bc8-e6
Bg5-f4 Nf8-g6 Bf4-h2 Be7-d6 Bh2xd6 Qd8xd6 Ra1-c1 b7-b6 a2-a3 Be6-d7 Rf1-d1
Ra8-c8 Qc2-b3 Re8-d8 Qb3-a4 Rc8-c7 Bd3xg6 h7xg6 Nf3-e5 Bd7-f5 Qa4-a6 c6-c5)
+0.60/22 24} Ng6 {(Nf8-g6 Nf3-e5 Be7-d6 f2-f4 Bd6-c7 Bd3-e2 a7-a6 Ra1-d1
Qd8-d6 Be2-f3 Qd6-d8 a2-a3) -0.26/14 5} 12. Ne5 {(Nf3-e5 Nf6-d7 Bg5xe7
Qd8xe7 Ne5-f3 Nd7-b6 Nc3-e2 Nb6-d7 Rf1-d1 Nd7-f6 Ne2-c3 Bc8-e6 a2-a3 Be6-d7
Ra1-c1 Ra8-d8 Qc2-b3) +0.60/21 11} Bd6 {(Be7-d6 f2-f4 Bd6-c7 Ra1-e1 Bc7-a5
Ne5xg6 h7xg6 f4-f5 Ba5xc3 Qc2xc3 g6xf5 Bd3xf5 Bc8xf5 Rf1xf5) -0.27/13 5}
13. f4 {(f2-f4 Bd6-b4 a2-a3 Bb4-e7 Ra1-e1 a7-a5 Qc2-b3 Ng6-f8 Rf1-f2 Nf8-d7
e3-e4 a5-a4 Nc3xa4 Nd7xe5 d4xe5 Nf6xe4 Bg5xe7 Re8xe7 Bd3xe4 d5xe4 Re1xe4)
+0.96/17 7} a6 {(a7-a6 h3-h4 Bd6-e7 Qc2-e2 Ng6-f8 h4-h5 Nf8-d7 Bg5xf6
Be7xf6 Ra1-d1 h7-h6 a2-a3 Nd7xe5 f4xe5) -0.29/14 5} 14. Rae1 {(Ra1-e1
Bd6-b4 a2-a3 Bb4-a5 b2-b4 Ba5-b6 Ne5-f3 Ng6-f8 Nc3-a4 Bb6-c7 Na4-c5 Nf8-g6
f4-f5 Ng6-f8 e3-e4 Bc7-g3 Re1-e2 h7-h6 Bg5xf6 Qd8xf6) +1.05/17 6} Bb4
{(Bd6-b4 h3-h4 Qd8-d6 Bg5xf6 Bb4xc3 b2xc3 g7xf6 h4-h5 f6xe5 h5xg6 h7xg6
f4xe5) -0.40/12 5} 15. a3 {(a2-a3 Bb4-a5 Qc2-a4 Ba5-c7 Bg5xf6 g7xf6 Ne5-f3
Qd8-d6 Qa4-c2 Kg8-h8 Qc2-b3 b7-b5 Qb3-c2 Bc8-d7 Bd3-f5 Kh8-g8 Bf5xd7 Qd6xd7
f4-f5 Ng6-e7) +1.05/19 9} Bd6 {(Bb4-d6 Ne5-f3 Bd6-b8 f4-f5 Ng6-f8 Bg5-f4
h7-h6 Bf4xb8 Ra8xb8 e3-e4 d5xe4 Nc3xe4 Nf8-d7) -0.55/13 5} 16. Nf3 {(Ne5-f3
Bd6-e7 f4-f5 Ng6-f8 Bg5-f4 Be7-d6 Bf4xd6 Qd8xd6 e3-e4 d5xe4 Nc3xe4 Nf6xe4
Bd3xe4 Nf8-d7 Be4-d3 Re8xe1 Rf1xe1 Nd7-f6 Qc2-c5 Qd6-f8 Nf3-e5 Nf6-d5
Bd3-e4 Qf8xc5 d4xc5) +0.96/18 6} Be7 {(Bd6-e7 f4-f5 Ng6-f8 Bg5-f4 Be7-d6
Bf4xd6 Qd8xd6 Qc2-d2 Nf8-d7 e3-e4 d5xe4 Nc3xe4 Nf6xe4 Re1xe4 Nd7-f6 Re4xe8+
Nf6xe8) -0.59/15 4} 17. Rc1 {(Re1-c1 Ng6-f8 Rf1-e1 a6-a5 Nf3-e5 Nf8-g6
Qc2-b3 Ra8-a7 Ne5-f3 Be7-d6 f4-f5 Ng6-e7 Qb3-c2 Nf6-d7 Bg5-f4 Bd6xf4 e3xf4
Nd7-f6 g2-g4 h7-h6 Nf3-e5 b7-b6 Qc2-b3) +0.96/19 9} Bd6 {(Be7-d6 Rf1-e1
b7-b5 Nf3-e5 Bc8-b7 Bd3-f5 c6-c5 d4xc5 Bd6xc5 Nc3xb5 a6xb5 Qc2xc5 Ng6xe5
f4xe5 Re8xe5 Qc5xb5 Re5xf5 Bg5xf6 Rf5xf6 Qb5xb7) -0.44/14 4} 18. Ne5
{(Nf3-e5 a6-a5 Rf1-e1 Bd6-e7 Qc2-b3 Ra8-a7 Ne5-f3 Be7-d6 Nf3-e5 Bd6-e7)
+0.96/19 6} Nf8 {(Ng6-f8 Rc1-d1 Nf8-g6 e3-e4 h7-h6 e4xd5 h6xg5 Ne5xf7
Kg8xf7 Bd3xg6+ Kf7-g8 Bg6xe8 Nf6xe8 f4xg5 Qd8xg5 d5xc6 b7xc6) -0.48/11 4}
19. Qb3 {(Qc2-b3 Bd6-e7 Rf1-f3 Ra8-a7 Rf3-f2 Nf8-d7 Bd3-b1 h7-h6 Bg5-h4
Nf6-h5 Bh4xe7 Qd8xe7 Qb3-c2 Nh5-f6 Rf2-f3 g7-g6 e3-e4 d5xe4 Nc3xe4 Nf6-d5)
+1.17/17 15} Be7 {(Bd6-e7 Rc1-e1 Be7-d6 Ne5-g4 Bc8xg4 h3xg4 Ra8-b8 Bg5xf6
Qd8xf6 g4-g5 Qf6-d8) -0.51/11 4} 20. Rfe1 {(Rf1-e1 a6-a5 Bg5-h4 Nf8-g6
Bh4-g5 Ra8-a7 Ne5-f3 Be7-d6 Nf3-e5 Bd6-e7) +0.96/17 6} Ng6 {(Nf8-g6 Ne5-f3
Nf6-h5 Bg5xe7 Ng6xe7 Nc3-a4 Ra8-b8 Na4-c5 Nh5-g3 Nc5xa6 Rb8-a8 Na6-c5
Ne7-g6 Nc5xb7) -0.52/13 4} 21. Na4 {(Nc3-a4 Nf6-d7 Bg5xe7 Re8xe7 Qb3-c2
Re7-e8 Ne5-f3 a6-a5 Qc2-f2 Qd8-f6 f4-f5 Ng6-e7 e3-e4 d5xe4 Bd3xe4 Re8-d8
Qf2-c2 b7-b5 Na4-c3 Nd7-b6 g2-g4 Ne7-d5 Nc3xd5 c6xd5) +1.01/18 6} b5
{(b7-b5 Na4-c5 Ng6xe5 f4xe5 Nf6-d7 Bg5xe7 Qd8xe7 Qb3-c2 Nd7xc5 Qc2xc5
Qe7xc5 Rc1xc5 Bc8-d7 Kg1-f2) -0.55/14 5} 22. Nc5 {(Na4-c5 Ng6xe5 f4xe5
Nf6-d7 Bg5xe7 Qd8xe7 Re1-f1 Nd7xc5 Rc1xc5 Qe7-g5 Rf1-f3 Bc8-d7 Qb3-c2
Qg5-h6 Qc2-f2 Re8-e7 Qf2-g3 Kg8-h8 Rf3-f4 Qh6-h5 Rf4-f1 Qh5-h6 e3-e4 Qh6-d2
e4xd5 Qd2xb2) +1.37/20 4} Nxe5 {(Ng6xe5 f4xe5 Nf6-d7 Bg5xe7 Qd8xe7 Qb3-d1
Nd7xc5 Rc1xc5 Qe7-g5 Rc5xc6 Bc8xh3 Qd1-f3 Bh3-d7 Rc6-c1 Ra8-c8 Rc1xc8
Re8xc8 Qf3xd5) -0.64/17 4} 23. fxe5 {(f4xe5 Nf6-d7 Bg5xe7 Qd8xe7 Re1-f1
Nd7xc5 Rc1xc5 Qe7-g5 Rf1-f3 Bc8-d7 Qb3-c2 Qg5-h5 Qc2-f2 Re8-c8 Qf2-g3
Kg8-h8 Rf3-f1 Bd7-e6 Rf1-c1 a6-a5 Qg3-f2 Be6-d7 Rc1-f1 Qh5-g5 Qf2-f4 Qg5xf4
Rf1xf4 Kh8-g8) +1.33/22 5} Nd7 {(Nf6-d7 Bg5xe7 Qd8xe7 Qb3-d1 Nd7xc5 Rc1xc5
Qe7-g5 Rc5xc6 Bc8xh3 Qd1-f3 Bh3-e6 Qf3-f4 h7-h6 Qf4xg5 h6xg5 Re1-f1 Re8-c8
Rc6-c5 Rc8xc5 d4xc5) -0.60/18 4} 24. Bxe7 {(Bg5xe7 Qd8xe7 Re1-f1 Kg8-h8
Qb3-c2 Nd7xc5 Qc2xc5) +1.53/23 6} Qxe7 {(Qd8xe7 Qb3-d1 Nd7xc5 Rc1xc5 Qe7-g5
Qd1-f3 Bc8-d7 Kg1-h2 h7-h6 e3-e4 Ra8-c8 e4xd5 c6xd5 Re1-f1 Bd7-e6 Qf3-g3
Qg5-d2 b2-b4 Rc8xc5 b4xc5) -0.54/18 4} 25. Rf1 {(Re1-f1 Nd7xc5 Rc1xc5
Qe7-g5 Rf1-f3 Bc8-d7 Rc5-c1 Kg8-h8 Qb3-c2 Bd7-e6 Qc2-c5 a6-a5 Qc5-d6 Qg5-h4
Bd3-f1 Re8-d8 Qd6-c7 Qh4-g5 Rc1xc6 Ra8-c8 Qc7-b6 Rc8xc6 Qb6xc6) +1.33/21 4}
Nxc5 {(Nd7xc5 Rc1xc5 Qe7-g5 Rf1-f3 Bc8-d7 Qb3-d1 Ra8-c8 Qd1-e1 Re8-e7 h3-h4
Qg5-h5 Rc5-c1 c6-c5 e5-e6 Re7xe6 Rc1xc5) -0.42/16 4} 26. Rxc5 {(Rc1xc5
Qe7-g5 Rf1-f3 Bc8-d7 Qb3-c2 Qg5-h5 Qc2-d2 Re8-c8 Rc5-c1 a6-a5 e3-e4 Qh5-h4
Rf3-f4 Qh4-g5 e4xd5 c6xd5 Rc1-f1 Bd7xh3 Bd3xh7+ Kg8-h8 Bh7-d3 Bh3-g4 Qd2-e1
Bg4-h5 Bd3xb5) +1.29/21 5} Qg5 {(Qe7-g5 Rf1-f3) -0.49/15 4} 27. Rf3
{(Rf1-f3 Bc8-d7 Qb3-c2 Qg5-h5 Qc2-d2 Qh5-h4 Rc5-c1 Re8-c8 Qd2-b4 Bd7-e6
Qb4-d6 Rc8-d8 Qd6-c5 Rd8-c8 Rc1-f1 Qh4-g5 Qc5-d6 Kg8-h8 Rf1-c1 Rc8-d8
Qd6-c7 Qg5-h4 Rc1xc6 Qh4-e1+ Bd3-f1 Qe1-d2) +1.45/22 7} Bb7 {(Bc8-b7 Qb3-c2
Qg5-h4 Rf3-f1 Ra8-d8 Qc2-d2 Re8-e7 Rc5-c1 Re7-e8 Qd2-e2 Qh4-g5 Bd3-f5 g7-g6
Bf5-b1 Qg5-g3 Rf1-f6) -0.57/16 5} 28. Rc2 {(Rc5-c2 Qg5-e7 Rc2-f2 Re8-f8
Qb3-c2 h7-h6 Qc2-c3 f7-f6 e5xf6 Rf8xf6 Rf3xf6 g7xf6 Bd3-b1 Ra8-e8 Bb1-g6
Re8-f8 Qc3-d3 Kg8-h8 b2-b4 Bb7-c8 Rf2-c2 Qe7-c7 Rc2-c1 Bc8-e6) +1.57/19 5}
g6 {(g7-g6 Qb3-b4 Ra8-c8 Rc2-c1 h7-h6 b2-b3 Re8-e6 Kg1-h2 Re6-e8 Rf3-f4
Rc8-d8 g2-g3 Rd8-d7 Qb4-d2) -0.46/14 4} 29. Qc3 {(Qb3-c3 Re8-e6 Rc2-f2
Ra8-f8 Rf3-f4 Qg5-e7 b2-b4 f7-f6 e3-e4 Kg8-g7 h3-h4 Kg7-g8 Bd3-c2 Rf8-f7
h4-h5 g6-g5 Rf4-f3 h7-h6 e4xd5 c6xd5) +1.69/19 4} Rac8 {(Ra8-c8 Qc3-b4
Re8-e7 Rc2-c1 Re7-e6 Rf3-f4 h7-h6 Kg1-h2 Re6-e8 Kh2-g1) -0.50/17 5} 30.
Rcf2 {(Rc2-f2 Rc8-c7 b2-b4 Bb7-c8 Qc3-c5 Re8-e7 Rf2-c2 Bc8-b7 g2-g3 Rc7-d7
Rc2-f2 Re7-e8 h3-h4 Qg5-e7 Qc5-b6 Qe7-e6 Kg1-g2 Rd7-e7 Qb6-c5 Qe6-d7 Kg2-g1
Qd7-g4 Qc5-d6 Qg4-e6 Qd6-c5 Qe6-g4) +1.85/22 4} Rc7 {(Rc8-c7 b2-b4 Bb7-c8
Qc3-c5 Bc8-b7 Qc5-d6 Rc7-e7 Qd6-f6 Qg5xf6 Rf3xf6 Re7-d7 Rf2-f1 Kg8-g7
Rf1-c1 h7-h6) -0.43/15 5} 31. Qc5 {(Qc3-c5 Qg5-e7 Qc5-b6 Qe7-d8 Rf3-f6
Rc7-e7 Qb6-c5 Qd8-a5 Qc5-c1 Re8-f8 b2-b4 Qa5-d8 Qc1-c5 Rf8-e8 Rf2-f1 Re7-d7
Bd3-e2 Rd7-e7 Qc5-c2 Re7-c7 Be2-g4 Bb7-c8 Rf6xc6 Rc7xc6 Qc2xc6 Bc8xg4
h3xg4) +1.93/22 12} Rce7 {(Rc7-e7 b2-b4 Re7-c7) -0.52/14 3} 32. b4 {(b2-b4
Re7-c7 Rf3-f4 Bb7-c8 Qc5-b6 Qg5-d8 h3-h4 Bc8-e6 h4-h5 Rc7-c8 Qb6xa6 Qd8-g5
h5xg6 h7xg6 Qa6-a7 Qg5-e7 Qa7-b6 Qe7-c7 Qb6-a6 Qc7-e7 Rf4-f6) +1.93/22 10}
Rc7 {(Re7-c7 Kg1-h2 Rc7-e7 Rf2-f1 Re7-c7 Qc5-d6 Qg5-e7 Rf3-f6 Re8-d8 Qd6xe7
Rc7xe7 Kh2-g3 Kg8-g7) -0.60/17 6} 33. g3 {(g2-g3 Qg5-e7 Qc5-b6 Qe7-d8
Rf3-f6 Rc7-e7 Qb6-c5 a6-a5 e3-e4 Re7-d7 b4xa5 Re8-e7 Kg1-h2 d5xe4 Bd3xe4
Rd7xd4 Be4xc6 Bb7xc6 Qc5xc6 Rd4-d5 Rf6-d6 Rd5xd6 Qc6xd6 Re7-d7 Qd6-b6
Rd7-d3 Qb6xd8+ Rd3xd8) +1.77/22 10} Rce7 {(Rc7-e7 Qc5-c1 Re7-c7 Kg1-g2
Bb7-c8 Rf2-c2 Bc8-d7 e3-e4 Qg5xc1 Rc2xc1 Bd7-e6 Rf3-f6 d5xe4 Bd3xe4 Re8-d8)
-0.34/15 3} 34. Kg2 {(Kg1-g2 Re7-d7 h3-h4 Qg5-e7 Qc5-c3 Qe7-f8 Rf3-f6
Qf8-h6 Rf6-f4 Rd7-e7 Qc3-c5 Re7-d7 Qc5-b6 Qh6-g7 e3-e4 Kg8-h8 Bd3-c2 Rd7-e7
Rf4-f6 Re7-d7 Kg2-g1 Rd7-e7 Bc2-d3) +2.14/20 4} Rc7 {(Re7-c7 Qc5-d6 Rc7-e7
Qd6-f6 Qg5xf6 Rf3xf6 Kg8-g7 Rf2-f1 Re7-d7 Rf1-c1 h7-h6 Rf6-f2 h6-h5 Rf2-f6)
-0.56/17 3} 35. h4 {(h3-h4 Qg5-d8 h4-h5 Bb7-c8 h5xg6 h7xg6 Rf2-f1 Qd8-e7
Qc5-c2 Qe7-g5 Qc2-f2 Re8-e7 Rf3-f6 Bc8-g4 e3-e4 Bg4-e6 Rf1-h1 d5xe4 Bd3xe4
Rc7-c8 Rf6-f4 Be6-g4 Qf2-c2 Bg4-h5 Qc2-c5 Re7-d7 Qc5-c3 Qg5-h6 Be4xc6
Qh6-g5 Rf4-f6) +2.14/19 3} Qg4 {(Qg5-g4 Qc5-d6 Rc7-e7 Qd6-f6 Re7-d7 Rf2-f1
Re8-e6 Qf6-f4 Qg4xf4 Rf3xf4 h7-h5 Rf4-f6 Rd7-e7 Kg2-f3 Bb7-c8 Rf6-f4 Re7-c7
Rf1-c1 Re6-e8) -0.56/19 4} 36. Rf4 {(Rf3-f4 Qg4-e6 Rf4-f6 Qe6-c8 h4-h5
Re8-e6 Rf6-f4 Qc8-f8 Qc5-c1 Qf8-g7 e3-e4 d5xe4 Bd3xe4 Rc7-d7 h5xg6 h7xg6
Qc1-c5 Qg7-f8 Qc5-c3 Qf8-h6 Qc3-b3 Bb7-c8 Rf4-h4 Qh6-g7 Qb3-e3 Kg8-f8
Qe3-c3) +2.38/20 2} Qd1 {(Qg4-d1 Qc5-c3 Qd1-h5 Rf4-f6 Rc7-e7 Bd3-e2 Qh5-h6
Rf2-f1 Re8-f8 Be2-g4 Rf8-d8 e5-e6 f7xe6 Rf6xe6 Rd8-e8 Re6-e5 Kg8-h8)
-0.75/17 6} 37. Qd6 {(Qc5-d6 Rc7-e7 Bd3-e2 Qd1-c1 Be2-g4 c6-c5 b4xc5 Qc1xe3
Bg4-d7 f7-f5 e5xf6/ep Re7-f7 c5-c6 Bb7-c8 Bd7xe8 Qe3xe8 Qd6xd5 Bc8-e6
Qd5-d6 Qe8-c8 d4-d5 Be6-f5 Rf4-b4 h7-h5 Qd6-e5 Bf5-h3+ Kg2-h2) +7.47/17 1}
Rce7 {(Rc7-e7 Bd3-c2 Qd1-e1 Rf4-f3 a6-a5 Rf3xf7 Re7xf7 Rf2xf7 Kg8xf7
Bc2xg6+ h7xg6 Qd6-f6+ Kf7-g8 Qf6xg6+ Kg8-f8 Qg6-f6+ Kf8-g8 Qf6-g6+)
-0.25/15 4} 38. Be2 {(Bd3-e2 Qd1-c1 Be2-g4 a6-a5 Bg4-d7 Bb7-c8 Bd7xc8
Qc1xa3 b4xa5 Qa3xa5 Bc8-d7 Qa5-d8 Bd7xc6 f7-f5 Qd6-c5 b5-b4 Qc5xb4 Re8-f8
Qb4-b5 Re7-e6 Bc6xd5) +8.28/18 1} Qc1 {(Qd1-c1 Be2-g4 Qc1xe3 Bg4-d7 Re7xe5
Rf4xf7 Qe3-e4+ Kg2-h2 Re5-e6 Bd7xe6) -4.61/16 9} 39. Bg4 {(Be2-g4 Qc1xa3
Bg4-d7 Qa3xb4 Qd6xb4 Re7xd7 Rf4-f6 Re8-e7 h4-h5 Rd7-c7 Qb4-d6 Re7-d7 Qd6-c5
Rd7-e7 e5-e6 Bb7-c8 e6xf7+ Re7xf7 h5xg6 Rf7xf6 Rf2xf6) +8.80/18 1} Qxe3
{(Qc1xe3 Bg4-d7 f7-f5 Bd7xe8 Re7xe8 Qd6-d7 Re8-b8 Qd7-c7 Rb8-e8 Qc7xb7
Qe3-c1 Qb7xa6 Qc1-c3 h4-h5 Qc3-c1) -4.92/17 11} 40. Bd7 {(Bg4-d7 Bb7-c8
Bd7xc8 f7-f5 e5xf6/ep Re7-f7 Qd6xc6 Qe3-e1 Bc8xa6 Re8-d8 Ba6xb5 Qe1-e3
Rf2-e2 Qe3xa3 Re2-e8+ Rd8xe8 Qc6xe8+ Rf7-f8 f6-f7+ Kg8-g7 Qe8-e5+ Kg7-h6
Qe5-e7 Kh6-g7 Qe7-f6+ Kg7-h6) +10.34/18 1} f5 {(f7-f5 Bd7xe8 Re7xe8 Qd6-d7
Re8-b8 Qd7-c7 Rb8-f8 Qc7xb7 Qe3xa3 Qb7xc6 Qa3xb4 Qc6xd5+ Kg8-h8 Qd5-e6
a6-a5 Rf2-c2 Qb4-e1 Rc2-c7 a5-a4) -5.08/18 8} 41. Bxe8 {(Bd7xe8 Re7xe8
h4-h5 Qe3xf2+ Rf4xf2 Bb7-c8 h5xg6 h7xg6 Qd6xg6+ Kg8-f8 Qg6xc6 Bc8-e6 Qc6xa6
Be6-d7 Qa6-d6+ Re8-e7 Qd6xd5 Bd7-e6 Qd5xb5 Re7-d7 a3-a4 Kf8-f7 Qb5-b6
Be6-d5+ Kg2-f1 Bd5-e6 a4-a5 Be6-c4+ Kf1-e1 Bc4-e6) +15.87/16 1} Rxe8
{(Re7xe8 Qd6-d7 Re8-b8 Qd7-c7) -5.25/16 3} 42. h5 {(h4-h5 Bb7-c8 h5xg6
Re8-e6 g6xh7+ Kg8xh7 Qd6-c7+ Kh7-g6 Qc7xc8 Re6xe5 d4xe5 Qe3xe5 Qc8-g8+
Qe5-g7 Qg8-e8+ Qg7-f7 Rf4-g4+ Kg6-f6 Rf2xf5+ Kf6xf5 Rg4-f4+ Kf5-g5 Qe8xf7
Kg5-h6 Qf7-f6+ Kh6-h5 Qf6xc6) +20.76/16 1} Bc8 {(Bb7-c8 h5xg6 Bc8-e6 Qd6xc6
Re8-e7 Qc6-a8+ Kg8-g7 Qa8-d8 Re7-f7 g6xf7 Be6xf7 Rf4xf5 Qe3-e4+ Kg2-h2
Bf7-g8) -9.78/13 8} 43. hxg6 {(h5xg6 Qe3-e4+ Rf4xe4 d5xe4 Qd6xc6 Re8-f8
e5-e6 Kg8-g7 e6-e7 Rf8-g8 e7-e8Q Rg8xe8 Qc6xe8 h7xg6 Qe8xc8 Kg7-h7 Rf2-c2
f5-f4 g3xf4 g6-g5 Qc8-d7+ Kh7-g6 Rc2-c6+) +95.42/18 20} Qxf4 {(Qe3xf4
Rf2xf4 Bc8-e6 Qd6xc6 Re8-e7 Rf4-h4 Kg8-h8 g6xh7 Re7xh7 Rh4xh7+ Kh8xh7
Qc6xe6 Kh7-g7 Qe6xa6 Kg7-h7 Qa6xb5) -13.43/15 8} 44. Rxf4 {(Rf2xf4 Bc8-e6
Qd6xc6 Re8-e7 Qc6-a8+ Kg8-g7 g6xh7 Kg7xh7 Qa8-f8 Be6-f7 Rf4-h4+ Bf7-h5
Qf8xe7+ Kh7-g8 Rh4xh5 f5-f4 Rh5-g5+ Kg8-h8 Qe7-g7+) +M10/16 1} Be6 {(Bc8-e6
Qd6xc6 Kg8-f8 g6xh7 Kf8-e7 Qc6xe8+ Ke7xe8 Rf4-h4 Ke8-d7 h7-h8Q Kd7-c7
Rh4-h7+ Be6-d7 Qh8-a8 f5-f4 Qa8-a7+ Kc7-c6 Qa7xd7+ Kc6-b6 Qd7-e6+) -M10/16
7 Arena Adjudication} 1-0[/pgn]

Yup, about as expected.

The CCRL has Stockfish 3 rated at about 3000 Elo. Blunder 7.6.0 is rated at around 2630 Elo, which would roughly put a 370 Elo gap between the two. So I wouldn't expect Blunder to be winning very much

A better match-up would probably be Stockfish 1 versus Blunder 7.6.0. Stockfish 1 is still stronger mind you, according to the CCRL rating, but Blunder should definitely win some.

[Chessqueen]

I decided to let it finish the 50 games, and this was the final result

Rank Engine Score St Bl S-B
1 Stockfish-3-64-ja 47.0/50 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 111111111111101111111111111=111111=1111111111=1=11 141.00
2 Blunder-windows 3.0/50 000000000000010000000000000=000000=0000000000=0=00 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 141.00


50 games played / Tournament is finished
Tournament start: 2022.06.28, 01:58:17
Latest update: 2022.06.28, 16:52:10
Site/ Country: DESKTOP-OFQ3C0P, United States
Level: Blitz 3/2
Hardware: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 16.0 GB Memory
Operating system: Windows 10 Home Home Edition (Build 9200) 64 bit
Table created with: Arena 3.5.1

[algerbrex]

I decided to let it finish the 50 games, and this was the final result

Rank Engine Score St Bl S-B
1 Stockfish-3-64-ja 47.0/50 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 111111111111101111111111111=111111=1111111111=1=11 141.00
2 Blunder-windows 3.0/50 000000000000010000000000000=000000=0000000000=0=00 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 141.00


50 games played / Tournament is finished
Tournament start: 2022.06.28, 01:58:17
Latest update: 2022.06.28, 16:52:10
Site/ Country: DESKTOP-OFQ3C0P, United States
Level: Blitz 3/2
Hardware: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 16.0 GB Memory
Operating system: Windows 10 Home Home Edition (Build 9200) 64 bit
Table created with: Arena 3.5.1

Thanks, interesting. I'm pretty surprised Blunder managed to win a game. Would you happen to have that PGN?

[Chessqueen]

I decided to let it finish the 50 games, and this was the final result

Rank Engine Score St Bl S-B
1 Stockfish-3-64-ja 47.0/50 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 111111111111101111111111111=111111=1111111111=1=11 141.00
2 Blunder-windows 3.0/50 000000000000010000000000000=000000=0000000000=0=00 · ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· · 141.00


50 games played / Tournament is finished
Tournament start: 2022.06.28, 01:58:17
Latest update: 2022.06.28, 16:52:10
Site/ Country: DESKTOP-OFQ3C0P, United States
Level: Blitz 3/2
Hardware: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 16.0 GB Memory
Operating system: Windows 10 Home Home Edition (Build 9200) 64 bit
Table created with: Arena 3.5.1

Thanks, interesting. I'm pretty surprised Blunder managed to win a game. Would you happen to have that PGN?

[pgn][Site "DESKTOP-OFQ3C0P"]
[Date "2022.06.28"]
[Round "14"]
[White "Stockfish-3-64-ja"]
[Black "Blunder-windows"]
[Result "0-1"]
[BlackElo "3015"]
[ECO "D45"]
[Opening "Semi-Slav"]
[Time "14:31:58"]
[Variation "6.Qc2 Bd6 7.g4 h6"]
[WhiteElo "2630"]
[TimeControl "180+2"]
[Termination "adjudication"]
[PlyCount "78"]
[WhiteType "program"]
[BlackType "program"]


1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 h6 8.
Rg1 e5 9. g5 hxg5 10. Rxg5 exd4 11. exd4 Kf8 12. cxd5 Nxd5 13. Nxd5 cxd5
14. Rxd5 Nf6 15. Rb5 a6 16. Rb3 Be6 17. Re3 Rc8 18. Qd1 Qd7 19. Bd2 Ng4 20.
Re5 f6 21. Re2 Bd5 22. Bg2 Nxh2 23. Re3 Qg4 24. Nh4 Bxg2 25. Qxg4 Nxg4 26.
Ng6+ Kf7 27. Nxh8+ Rxh8 28. Ke2 Nxe3 29. Bxe3 g5 30. a4 g4 31. Rg1 Bf3+ 32.
Kd3 f5 33. b4 Be4+ 34. Kc3 f4 35. Rxg4 Rh3 36. Kc4 fxe3 37. fxe3 Rxe3 38.
Rh4 Bd3+ 39. Kc3 b5 {User Adjudication} 0-1[/pgn]

[algerbrex]

Hi everyone,

I've decided to go ahead and release Blunder 8.0.0, despite some reservations (although, truthfully, I have reservations with every release). The release notes can be seen here: https://github.com/algerbrex/blunder/re ... tag/v8.0.0.

I expect Blunder 8.0.0 to be roughly 50 Elo stronger at bullet time controls.

[AndrewGrant]

Hi everyone,

I've decided to go ahead and release Blunder 8.0.0, despite some reservations (although, truthfully, I have reservations with every release). The release notes can be seen here: https://github.com/algerbrex/blunder/re ... tag/v8.0.0.

I expect Blunder 8.0.0 to be roughly 50 Elo stronger at bullet time controls.

Congrats on the release.

[algerbrex]

Hi everyone,

I've decided to go ahead and release Blunder 8.0.0, despite some reservations (although, truthfully, I have reservations with every release). The release notes can be seen here: https://github.com/algerbrex/blunder/re ... tag/v8.0.0.

I expect Blunder 8.0.0 to be roughly 50 Elo stronger at bullet time controls.

Congrats on the release.

Thanks, Andrew. Same to you and Ethereal 13.75.

[lithander]

Congratz on the release!

Here's a 40/15 game against Leoriks current dev version from the start position. I assume like me you don't have a built-in opening book? Always astounding how the engines play established openings regardless. Anyway... it was a very smooth victory for Blunder 8!

[pgn][Event "?"]
[Site "?"]
[Date "2022.06.30"]
[Round "?"]
[White "blunder-8.0.0"]
[Black "Leorik-2.1.9"]
[Result "1-0"]
[ECO "A06"]
[GameDuration "00:55:14"]
[GameEndTime "2022-06-30T12:41:46.992 Mitteleuropäische Sommerzeit"]
[GameStartTime "2022-06-30T11:46:32.204 Mitteleuropäische Sommerzeit"]
[Opening "Reti Opening"]
[PlyCount "145"]
[TimeControl "40/900"]

1. Nf3 {+0.16/19 23s} d5 {-0.19/17 14s} 2. d4 {+0.14/19 22s} Nf6 {-0.25/16 12s}
3. c4 {+0.24/18 23s} c6 {-0.16/17 19s} 4. cxd5 {+0.19/18 22s}
cxd5 {-0.24/18 22s} 5. Nc3 {+0.14/19 23s} Nc6 {-0.23/18 31s}
6. Bf4 {+0.03/19 23s} Qb6 {-0.11/17 25s} 7. a3 {+0.28/18 23s} Bf5 {-0.24/16 19s}
8. Na4 {+0.30/20 23s} Qa5+ {-0.41/18 28s} 9. b4 {+0.47/21 23s}
Qd8 {-0.32/17 14s} 10. Nc5 {+0.52/21 23s} e6 {-0.49/16 14s}
11. Nxb7 {+0.94/19 23s} Qc8 {-1.00/18 42s} 12. Nc5 {+0.95/20 29s}
Nh5 {-0.81/17 34s} 13. Bd2 {+1.17/19 22s} Bxc5 {-0.97/16 13s}
14. dxc5 {+1.20/21 22s} O-O {-0.97/17 14s} 15. b5 {+1.48/22 22s}
Ne7 {-1.25/18 16s} 16. Rc1 {+1.50/21 22s} Nf6 {-1.28/18 24s}
17. e3 {+1.60/19 22s} Qc7 {-1.34/17 56s} 18. Be2 {+1.79/18 22s}
Rac8 {-1.45/16 11s} 19. Qa4 {+1.98/19 22s} Ne4 {-1.52/17 17s}
20. Bb4 {+1.99/19 22s} Bg4 {-1.72/16 12s} 21. c6 {+2.27/20 22s}
Rfe8 {-1.90/16 12s} 22. Qa5 {+2.12/21 22s} Qb8 {-1.99/18 24s}
23. h3 {+2.20/20 22s} Bh5 {-1.93/17 23s} 24. O-O {+2.19/20 29s}
Ng5 {-1.77/17 12s} 25. g4 {+2.59/22 29s} Nxf3+ {-2.18/19 23s}
26. Bxf3 {+2.83/24 21s} Bg6 {-2.25/19 27s} 27. Rfd1 {+2.87/24 28s}
h5 {-2.47/18 13s} 28. gxh5 {+2.91/24 21s} Bh7 {-2.43/17 11s}
29. c7 {+2.89/24 21s} Qb7 {-2.34/19 21s} 30. Bg2 {+2.90/22 21s}
Nf5 {-2.35/18 10s} 31. Rc4 {+2.95/21 21s} Ne7 {-2.35/17 23s}
32. Bd6 {+3.06/21 21s} Nf5 {-2.55/17 16s} 33. Bh2 {+3.11/20 21s}
Ne7 {-2.83/18 33s} 34. Bg3 {+2.98/20 21s} Nf5 {-2.33/19 29s}
35. Be5 {+3.02/21 16s} f6 {-2.52/18 15s} 36. Bh2 {+3.15/21 22s}
Ne7 {-2.54/18 22s} 37. Qb4 {+3.15/19 22s} Qb6 {-2.69/17 31s}
38. Rcc1 {+3.04/21 22s} e5 {-2.56/19 22s} 39. Qc5 {+3.31/21 22s}
Qa5 {-3.13/20 63s} 40. h6 {+3.55/20 21s} Bf5 {-2.98/18 24s}
41. Bg3 {+3.40/19 23s} gxh6 {-2.64/18 21s} 42. Bh4 {+4.41/21 29s}
Kg7 {-3.49/18 24s} 43. Qd6 {+4.35/19 36s} Ng8 {-3.61/17 9.3s}
44. Bxd5 {+5.15/20 29s} Qa4 {-3.82/18 25s} 45. Bc4 {+5.62/20 22s}
Bc2 {-4.44/17 12s} 46. Be6 {+5.74/21 28s} Kg6 {-4.55/16 12s}
47. Bxc8 {+6.57/19 31s} Rxc8 {-6.63/19 21s} 48. Kh2 {+7.22/22 31s}
Bxd1 {-7.04/19 15s} 49. Rxd1 {+7.20/23 27s} Qxd1 {-7.89/21 20s}
50. Qxd1 {+8.18/25 28s} Rxc7 {-8.99/22 15s} 51. Qd8 {+8.18/25 27s}
Rg7 {-10.55/22 14s} 52. Qd3+ {+8.20/22 30s} f5 {-9.94/24 60s}
53. Qd6+ {+8.52/24 29s} Kh7 {-11.40/24 38s} 54. Qxe5 {+9.47/28 26s}
Rf7 {-11.34/23 18s} 55. Qe6 {+9.53/27 25s} Kg7 {-10.82/24 22s}
56. Bg3 {+9.64/27 25s} f4 {-11.50/23 21s} 57. Bxf4 {+10.94/22 25s}
h5 {-12.32/22 14s} 58. Be5+ {+12.43/21 24s} Kf8 {-22.84/24 99s}
59. Qc8+ {+12.67/21 27s} Ke7 {-14.93/23 13s} 60. Qxg8 {+14.65/21 23s}
Rxf2+ {-15.32/22 18s} 61. Kg3 {+14.75/17 24s} Rf1 {-18.55/22 62s}
62. Qd5 {+15.66/19 23s} Rf7 {-18.55/19 9.8s} 63. Qd6+ {+17.48/20 22s}
Ke8 {-M18/22 37s} 64. Qg6 {+21.85/21 22s} h4+ {-M16/21 14s}
65. Kxh4 {+17.43/19 21s} Ke7 {-M14/20 14s} 66. Bd6+ {+M15/18 16s}
Kd7 {-M14/21 16s} 67. Bb4 {+M13/18 21s} Rf2 {-M12/20 17s} 68. Qd6+ {+M11/17 16s}
Kc8 {-M10/22 22s} 69. Qe6+ {+M9/17 16s} Kc7 {-M8/21 10s} 70. Qe7+ {+M7/17 16s}
Kb6 {-M6/22 19s} 71. Qc5+ {+M5/18 16s} Kb7 {-M4/23 14s} 72. Qc6+ {+M3/18 16s}
Kb8 {-M2/22 10s} 73. Bd6# {+M1/19 16s, White mates} 1-0[/pgn]

And here's the analysis on Chess.com: https://www.chess.com/analysis/game/pgn/4stWod6hgz

I'll run a few hundred (faster) matches later after work!

[algerbrex]

Congratz on the release!

Here's a 40/15 game against Leoriks current dev version from the start position. I assume like me you don't have a built-in opening book? Always astounding how the engines play established openings regardless. Anyway... it was a very smooth victory for Blunder 8!

[pgn][Event "?"]
[Site "?"]
[Date "2022.06.30"]
[Round "?"]
[White "blunder-8.0.0"]
[Black "Leorik-2.1.9"]
[Result "1-0"]
[ECO "A06"]
[GameDuration "00:55:14"]
[GameEndTime "2022-06-30T12:41:46.992 Mitteleuropäische Sommerzeit"]
[GameStartTime "2022-06-30T11:46:32.204 Mitteleuropäische Sommerzeit"]
[Opening "Reti Opening"]
[PlyCount "145"]
[TimeControl "40/900"]

1. Nf3 {+0.16/19 23s} d5 {-0.19/17 14s} 2. d4 {+0.14/19 22s} Nf6 {-0.25/16 12s}
3. c4 {+0.24/18 23s} c6 {-0.16/17 19s} 4. cxd5 {+0.19/18 22s}
cxd5 {-0.24/18 22s} 5. Nc3 {+0.14/19 23s} Nc6 {-0.23/18 31s}
6. Bf4 {+0.03/19 23s} Qb6 {-0.11/17 25s} 7. a3 {+0.28/18 23s} Bf5 {-0.24/16 19s}
8. Na4 {+0.30/20 23s} Qa5+ {-0.41/18 28s} 9. b4 {+0.47/21 23s}
Qd8 {-0.32/17 14s} 10. Nc5 {+0.52/21 23s} e6 {-0.49/16 14s}
11. Nxb7 {+0.94/19 23s} Qc8 {-1.00/18 42s} 12. Nc5 {+0.95/20 29s}
Nh5 {-0.81/17 34s} 13. Bd2 {+1.17/19 22s} Bxc5 {-0.97/16 13s}
14. dxc5 {+1.20/21 22s} O-O {-0.97/17 14s} 15. b5 {+1.48/22 22s}
Ne7 {-1.25/18 16s} 16. Rc1 {+1.50/21 22s} Nf6 {-1.28/18 24s}
17. e3 {+1.60/19 22s} Qc7 {-1.34/17 56s} 18. Be2 {+1.79/18 22s}
Rac8 {-1.45/16 11s} 19. Qa4 {+1.98/19 22s} Ne4 {-1.52/17 17s}
20. Bb4 {+1.99/19 22s} Bg4 {-1.72/16 12s} 21. c6 {+2.27/20 22s}
Rfe8 {-1.90/16 12s} 22. Qa5 {+2.12/21 22s} Qb8 {-1.99/18 24s}
23. h3 {+2.20/20 22s} Bh5 {-1.93/17 23s} 24. O-O {+2.19/20 29s}
Ng5 {-1.77/17 12s} 25. g4 {+2.59/22 29s} Nxf3+ {-2.18/19 23s}
26. Bxf3 {+2.83/24 21s} Bg6 {-2.25/19 27s} 27. Rfd1 {+2.87/24 28s}
h5 {-2.47/18 13s} 28. gxh5 {+2.91/24 21s} Bh7 {-2.43/17 11s}
29. c7 {+2.89/24 21s} Qb7 {-2.34/19 21s} 30. Bg2 {+2.90/22 21s}
Nf5 {-2.35/18 10s} 31. Rc4 {+2.95/21 21s} Ne7 {-2.35/17 23s}
32. Bd6 {+3.06/21 21s} Nf5 {-2.55/17 16s} 33. Bh2 {+3.11/20 21s}
Ne7 {-2.83/18 33s} 34. Bg3 {+2.98/20 21s} Nf5 {-2.33/19 29s}
35. Be5 {+3.02/21 16s} f6 {-2.52/18 15s} 36. Bh2 {+3.15/21 22s}
Ne7 {-2.54/18 22s} 37. Qb4 {+3.15/19 22s} Qb6 {-2.69/17 31s}
38. Rcc1 {+3.04/21 22s} e5 {-2.56/19 22s} 39. Qc5 {+3.31/21 22s}
Qa5 {-3.13/20 63s} 40. h6 {+3.55/20 21s} Bf5 {-2.98/18 24s}
41. Bg3 {+3.40/19 23s} gxh6 {-2.64/18 21s} 42. Bh4 {+4.41/21 29s}
Kg7 {-3.49/18 24s} 43. Qd6 {+4.35/19 36s} Ng8 {-3.61/17 9.3s}
44. Bxd5 {+5.15/20 29s} Qa4 {-3.82/18 25s} 45. Bc4 {+5.62/20 22s}
Bc2 {-4.44/17 12s} 46. Be6 {+5.74/21 28s} Kg6 {-4.55/16 12s}
47. Bxc8 {+6.57/19 31s} Rxc8 {-6.63/19 21s} 48. Kh2 {+7.22/22 31s}
Bxd1 {-7.04/19 15s} 49. Rxd1 {+7.20/23 27s} Qxd1 {-7.89/21 20s}
50. Qxd1 {+8.18/25 28s} Rxc7 {-8.99/22 15s} 51. Qd8 {+8.18/25 27s}
Rg7 {-10.55/22 14s} 52. Qd3+ {+8.20/22 30s} f5 {-9.94/24 60s}
53. Qd6+ {+8.52/24 29s} Kh7 {-11.40/24 38s} 54. Qxe5 {+9.47/28 26s}
Rf7 {-11.34/23 18s} 55. Qe6 {+9.53/27 25s} Kg7 {-10.82/24 22s}
56. Bg3 {+9.64/27 25s} f4 {-11.50/23 21s} 57. Bxf4 {+10.94/22 25s}
h5 {-12.32/22 14s} 58. Be5+ {+12.43/21 24s} Kf8 {-22.84/24 99s}
59. Qc8+ {+12.67/21 27s} Ke7 {-14.93/23 13s} 60. Qxg8 {+14.65/21 23s}
Rxf2+ {-15.32/22 18s} 61. Kg3 {+14.75/17 24s} Rf1 {-18.55/22 62s}
62. Qd5 {+15.66/19 23s} Rf7 {-18.55/19 9.8s} 63. Qd6+ {+17.48/20 22s}
Ke8 {-M18/22 37s} 64. Qg6 {+21.85/21 22s} h4+ {-M16/21 14s}
65. Kxh4 {+17.43/19 21s} Ke7 {-M14/20 14s} 66. Bd6+ {+M15/18 16s}
Kd7 {-M14/21 16s} 67. Bb4 {+M13/18 21s} Rf2 {-M12/20 17s} 68. Qd6+ {+M11/17 16s}
Kc8 {-M10/22 22s} 69. Qe6+ {+M9/17 16s} Kc7 {-M8/21 10s} 70. Qe7+ {+M7/17 16s}
Kb6 {-M6/22 19s} 71. Qc5+ {+M5/18 16s} Kb7 {-M4/23 14s} 72. Qc6+ {+M3/18 16s}
Kb8 {-M2/22 10s} 73. Bd6# {+M1/19 16s, White mates} 1-0[/pgn]

And here's the analysis on Chess.com: https://www.chess.com/analysis/game/pgn/4stWod6hgz

I'll run a few hundred (faster) matches later after work!

Thanks for sharing Thomas!

I actually suspect Leorik 2.1.9 is stronger, but yes, that will require testing Be sure to update on the result of the match you run later!

And yes you're correct, Blunder has no built-in opening book, although it has support for connecting to polyglot style bin opening books. Probably one of the coolest parts of seeing an engine improve is seeing it discover known chess theory, such as opening choice

[emadsen]

I enjoyed the read!

My hope was that by the next round of Division 7 I could supply a version that would promote. But with a new version of Odonata and now Blunder to compete with the opponents will be quite a bit tougher than last time. Also I wonder when Erik will release a new version of MadChess. On his blog he wrote about a beta version of 3.1 already in march.

I've been busy with family issues that needed attention the last few months. Calming down now. All I could do with MadChess was experiment with LMR formulas, which is slow and tedious. In search code, unlike evaluation code, I can't rely on Texel tuning to predict strength improvements or regressions. So I've been tweaking LMR formulas and running many games. Have found a 5 Elo improvement, so it's not wasted effort.

I really should improve the evaluation- rather than screwing around with search- to push MadChess past 2700 Elo...