Hi
I'm new here; this is my first posting.
12 years ago I programmed a chessprogram called Dabbaba. So I have some good old stuff on my computer, that might interest this forum.
I'll start with this little one.
http://www.jens-musik.dk/GeniusG3G4.htm
I assume this position may still cause many programs to play the silly g3-g4? at fast levels...
Take care, Jens
An interesting position, where Genius played g3-g4?
Moderator: Ras
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AdminX
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Re: An interesting position, where Genius played g3-g4?
Per the link above:
[d]8/4bB2/8/7p/4k3/p5P1/6K1/8 w - - 0 0
"White easily draws with the king on h1 and giving the bishop for
blacks a-pawn. Black has the wrong bishop and cannot promote his pawn."
"White plays 1.g4?? and pushes the loss of the bishop out of the horizon.
But with a longer search it sees it doesn't help or that white plays his king
to g6 and draws."
[d]8/4bB2/8/7p/4k3/p5P1/6K1/8 w - - 0 0
"White easily draws with the king on h1 and giving the bishop for
blacks a-pawn. Black has the wrong bishop and cannot promote his pawn."
"White plays 1.g4?? and pushes the loss of the bishop out of the horizon.
But with a longer search it sees it doesn't help or that white plays his king
to g6 and draws."
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
__________________________________________________________________
Ted Summers
-
Eelco de Groot
- Posts: 4702
- Joined: Sun Mar 12, 2006 2:40 am
- Full name: Eelco de Groot
Re: An interesting position, where Genius played g3-g4?
Hello Jens, welcome to the place, we can always use more chessprogrammers here!
I think that for programs with a good quiescence function and lots of hashtable space this move should not occur much, but seeing that White is safe and can't lose in this position is not yet within reach without tablebases. I tried it with modified Glaurung and the eval goes only slowly towards "not-losing", the move g3-g4 is not considered although that may be "luck" because of positional evaluations without really understanding the position
8/4bB2/8/7p/4k3/p5P1/6K1/8 w - -
Engine: Ancalagon 2.0 Beta 003 settings Build 30 (Athlon 2009 MHz, 256 MB)
by Tord Romstad, Eelco de Groot
2.00 0:00 -1.54 1.Kf2 Kd4 (99) 0
3.00 0:00 -1.29 1.Kf2 Bc5+ 2.Ke2 Kd4 (380) 1
4.00 0:00 -1.33 1.Kf2 Kd4 2.Ke2 Bd6 (833) 2
5.00 0:00 -1.29 1.Kf2 Kd3 2.Ke1 Bb4+ 3.Kd1 Kd4 (1.897) 6
6.00 0:00 -1.31 1.Kf2 Kd3 2.Ke1 Bc5 3.Kd1 Bd4 (3.107) 9
7.00 0:00 -1.23 1.Kf2 Kd3 2.g4 h4 3.Kg2 Kd4 4.Be6 (14.906) 43
8.00 0:00 -1.66 1.Kf2 Kd3 2.g4 h4 3.Kg2 Kd4 4.Be6 Bg5 (19.875) 57
8.00 0:00 -1.50 1.Ba2 Kd4 2.Kf3 Bd6 3.Be6 Be5 4.Bf7 Kc3 (34.055) 90
9.00 0:00 -1.35 1.Ba2 Kd4 2.g4 h4 3.Be6 Bg5 4.Bf7 Bf4
5.Be6 (56.732) 139
10.00 0:00 -1.45 1.Ba2 Kd4 2.Be6 Bd6 3.Kf3 Be5 4.g4 h4
5.g5 h3 6.Bxh3 (95.536) 210
11.00 0:00 -1.43 1.Ba2 Kd4 2.Be6 Bd6 3.Kf3 Be5 4.g4 h4
5.Kg2 h3+ 6.Kxh3 Bf4 (167.045) 305
12.00 0:00 -2.50 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Be6 Bg5 6.Bd5 Bf4 (267.405) 397
12.05 0:01 -2.33 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bg5 6.Be6 h3+ 7.Kg3 h2 8.Bd5 h1Q
9.Bxh1 (588.824) 538
13.01 0:01 -2.47 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bg5 6.Be6 Bf4 7.Bd5 Be3 (728.082) 575
13.02 0:01 -2.31 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Bd5 Bg5 6.Be6 Bf4 7.Bd5 (790.710) 588
14.01 0:01 -2.47 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Bd5 Bg5 6.Be6 Bf4 7.Bd5 Be3 (908.553) 605
14.02 0:01 -2.27 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bf6 6.Be6 h3+ 7.Kh2 Bg5 8.Bd5 Bf4+
9.Kxh3 (1.120.650) 640
15.01 0:02 -2.47 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bd8 6.Bf7 Bg5 7.Bc4 Bf4 8.Bd5 Be3 (1.431.092) 673
15.04 0:02 -2.07 1.Be6 Kd4 2.Kf3 Bg5 3.Bf7 Kc3 4.Ke4 Kb2
5.Kf5 Bh6 6.Kg6 Be3 7.Kxh5 Bd4 8.g4 (2.117.788) 709
16.01 0:03 -2.47 1.Be6 Kd4 2.Kf3 Bg5 3.Bf7 Bh6 4.g4 h4
5.Kg2 Kc3 6.Bg8 Kb2 7.Be6 Bf4 8.Bd5 Be3 (2.888.067) 739
17.01 0:07 -2.33 1.Be6 Bg5 2.g4 Ke5 3.Bg8 h4 4.Bf7 Kd4
5.Bg8 Kc3 6.Bd5 Kb2 7.Bc4 Bf4 8.Bd5 Be3
9.Be6 (5.828.381) 781
18.01 0:12 -2.27 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Kc3
5.Ke4 Kb2 6.Kf5 Be3 7.Bd5 Bd4 8.Kg6 Bc3
9.Kxh5 Bd4 (10.069.836) 817
19.01 0:18 -2.27 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.g4 h4 6.Kf2 Bg5 7.Bf7 Bh6 8.Bg8 Kc3
9.Bf7 Kb2 10.Kg2 (15.934.833) 842
20.01 0:32 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Kc3
5.Ke4 Bg5 6.Kf5 Bd8 7.Bf7 Kb2 8.Bd5 Be7
9.Kg6 Kb1 10.Kxh5 Kb2 (28.121.054) 864
21.01 0:45 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.Bf7 Bg5 6.Ke2 Kc3 7.Kf3 Kb2 8.Bd5 Bd8
9.Be6 Be7 10.Ke4 Bd6 11.g4 (39.742.906) 871
22.01 1:37 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.Bf7 Bg5 6.Ke2 Kc3 7.Kf3 Kb2 8.Bd5 Bd8
9.Ke3 Ba5 10.g4 h4 11.g5 h3 12.Ke4 (83.134.800) 854
23.01 2:41 -2.09 1.Be6 Bg5 2.Ba2 Kd3 3.Kf3 Kd4 4.Bg8 Bd2
5.Ba2 Kc3 6.Ke4 Kb2 7.Bd5 Bc3 8.Kf3 Bf6
9.Ke4 Kb1 10.Kf3 Be7 11.Be4+ Ka2
12.Bd5+ Kb2 13.Ke4 (139.368.651) 863
24.01 4:21 -2.03 1.Be6 Bg5 2.Ba2 Kd3 3.Kf3 Kd4 4.Bg8 Bd2
5.Ba2 Kc3 6.Ke4 Kb2 7.Bd5 Bc3 8.Kf5 Be1
9.Kg6 Bf2 10.Bf7 Bd4 11.Kxh5 Be3
12.g4 Bd4 (224.799.138) 860
25.01 9:06 -1.76 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc3 8.Be6 Kb2
9.Ke4 Bg7 10.Kf4 Kb1 11.Bd5 Bb2
12.Kf5 Ba1 13.Ke4 (453.582.466) 829
26.01 12:38 -1.76 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc3 8.Be6 Kb2
9.Ke4 Bg7 10.Kf4 Bc3 11.Bf7 Bb4
12.Bd5 Bd2+ 13.Kf3 Ka1 14.Ke4 (618.380.453) 815
27.01 27:24 -1.66 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc2 8.Bd5 Kb2
9.Ke4 Ka1 10.Kf5 Be3 11.Ke4 Bc1
12.Bc4 Bh6 13.Bd5 Bg5 14.Kd3 (1.262.457.515) 767
28.01 46:58 -1.66 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc2 8.Bd5 Kb2
9.Ke4 Bg5 10.Kf5 Be3 11.Kg6 Kb1
12.Kxh5 Bd2 13.Kg4 Kb2 14.Kf5 (2.092.287.195) 742
29.01 146:04 -1.25 1.Be6 Bg5 2.Bf7 Kd4 3.Ba2 Ke3 4.Be6 Be7
5.Bf7 Bf6 6.Bd5 Kd4 7.Bf7 Ke5 8.Kf3 Bg5
9.Ba2 Bd2 10.Ke2 Bb4 11.Bf7 Bd6
12.Kf3 Kd4 13.Ba2 Be5 14.Be6 (6.004.585.272) 685
best move: Bf7-e6 time: 179:44.500 min n/s: 681.190 nodes: 7.346.280.000
and now after entering 1. g3-g4:
[d]8/4bB2/8/7p/4k1P1/p7/6K1/8 b - -
Engine: Ancalagon 2.0 Beta 003 (256 MB)
by Tord Romstad, Eelco de Groot
2.00 0:00 +1.86 1...hxg4 2.Kg3 (121)
3.00 0:00 +1.94 1...hxg4 2.Kg3 Kf5 (269)
4.00 0:00 +1.80 1...hxg4 2.Kg3 Kf5 3.Kg2 (516)
5.00 0:00 +2.17 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 (1.178)
6.00 0:00 +2.29 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bd5 (2.096)
7.00 0:00 +2.25 1...hxg4 2.Kg3 Kf5 3.Bd5 Bg5 4.Bc4 Bf4+
5.Kf2 (4.176) 261
8.00 0:00 +2.43 1...hxg4 2.Kg3 Kf5 3.Kg2 Bd6 4.Kf2 Ke4
5.Be6 (9.012) 563
9.00 0:00 +2.33 1...hxg4 2.Kg3 Kf5 3.Bc4 Bd6+ 4.Kf2 Kf4
5.Ke2 Ke4 6.Kd2 (13.010) 419
10.00 0:00 +2.35 1...hxg4 2.Kg3 Kf5 3.Bc4 Bd6+ 4.Kf2 Kf4
5.Be6 Bf8 6.Bd5 Bd6 (20.794) 442
11.00 0:00 +2.39 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Ke5
5.Bb3 Kf4 6.Ke2 Ke4 7.Kd2 (40.836) 648
12.00 0:00 +2.43 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Ke5
5.Bb3 Kf4 6.Bd5 Bc5+ 7.Ke2 Ke5 8.Bc4 (76.107) 691
13.00 0:00 +2.49 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Kg2 Bc5 6.Bc4 Be3 7.Bd5 Bd4 8.Bc4 (165.392) 703
14.00 0:00 +2.49 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Bf7 Bc5+ 6.Kg2 Bb4 7.Kf2 Bd6 8.Bd5 Bc5+
9.Ke2 Ke5 (246.060) 750
15.00 0:00 +2.50 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Bf7 Bc5+ 6.Kg2 Bd4 7.Bd5 Bb6 8.Be6 Ke5
9.Bc4 Kf4 (459.647) 795
16.00 0:00 +2.50 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bg8 Bh4
5.Bd5 Ke3 6.Be6 Ke4 7.Ba2 Ke5 8.Bc4 Be1
9.Bf7 (787.514) 812
17.01 0:01 +2.52 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bg8 Bh4
5.Bd5 Ke3 6.Be6 Ke4 7.Ba2 Ke5 8.Bf7 Kf5
9.Bd5 Ke5 (1.292.724) 844
18.01 0:02 +3.98 1...hxg4 2.Kg3 Kf5 3.Kg2 Bd6 4.Kf2 Ke4
5.Be6 Kd4 6.Ke2 Kc3 7.Kd1 g3 8.Ke2 Kb2
9.Kf1 a2 10.Bxa2 Kxa2 11.Kg2 (2.233.878) 861
19.01 0:03 +3.98 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Kd4 6.Kd2 Bd6 7.Be6 g3 8.Ke2 Kc3
9.Kf3 Kb2 10.Bd5 a2 11.Bxa2 Kxa2
12.Kg2 (3.097.563) 880
20.01 0:05 +4.96 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Kd4 6.Kd2 Bd6 7.Be6 g3 8.Ke2 Kc3
9.Kf3 Kb2 10.Bd5 a2 11.Bxa2 Kxa2
12.Kg2 Kb3 (4.804.050) 904
21.01 0:08 +4.96 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Be3 6.Be6 Kd4 7.Kf1 Kc3 8.Ke2 Bf4
9.Ke1 Bd6 10.Kd1 Kb2 11.Ke2 a2
12.Bxg4 a1R 13.Kd3 (7.197.136) 889
22.01 0:12 +6.43 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Be3 6.Be6 Kd4 7.Kf1 Kc3 8.Kg2 Bf4
9.Bg8 Bd6 10.Kf2 Kb2 11.Kg1 a2
12.Bxa2 Kxa2 13.Kg2 Kb3 (11.745.236) 937
best move: h5xg4 time: 0:19.562 min n/s: 913.931 nodes: 17.850.000
Only around 18 plies the score for Black is really going up.
Regards, Eelco
I think that for programs with a good quiescence function and lots of hashtable space this move should not occur much, but seeing that White is safe and can't lose in this position is not yet within reach without tablebases. I tried it with modified Glaurung and the eval goes only slowly towards "not-losing", the move g3-g4 is not considered although that may be "luck" because of positional evaluations without really understanding the position
8/4bB2/8/7p/4k3/p5P1/6K1/8 w - -
Engine: Ancalagon 2.0 Beta 003 settings Build 30 (Athlon 2009 MHz, 256 MB)
by Tord Romstad, Eelco de Groot
2.00 0:00 -1.54 1.Kf2 Kd4 (99) 0
3.00 0:00 -1.29 1.Kf2 Bc5+ 2.Ke2 Kd4 (380) 1
4.00 0:00 -1.33 1.Kf2 Kd4 2.Ke2 Bd6 (833) 2
5.00 0:00 -1.29 1.Kf2 Kd3 2.Ke1 Bb4+ 3.Kd1 Kd4 (1.897) 6
6.00 0:00 -1.31 1.Kf2 Kd3 2.Ke1 Bc5 3.Kd1 Bd4 (3.107) 9
7.00 0:00 -1.23 1.Kf2 Kd3 2.g4 h4 3.Kg2 Kd4 4.Be6 (14.906) 43
8.00 0:00 -1.66 1.Kf2 Kd3 2.g4 h4 3.Kg2 Kd4 4.Be6 Bg5 (19.875) 57
8.00 0:00 -1.50 1.Ba2 Kd4 2.Kf3 Bd6 3.Be6 Be5 4.Bf7 Kc3 (34.055) 90
9.00 0:00 -1.35 1.Ba2 Kd4 2.g4 h4 3.Be6 Bg5 4.Bf7 Bf4
5.Be6 (56.732) 139
10.00 0:00 -1.45 1.Ba2 Kd4 2.Be6 Bd6 3.Kf3 Be5 4.g4 h4
5.g5 h3 6.Bxh3 (95.536) 210
11.00 0:00 -1.43 1.Ba2 Kd4 2.Be6 Bd6 3.Kf3 Be5 4.g4 h4
5.Kg2 h3+ 6.Kxh3 Bf4 (167.045) 305
12.00 0:00 -2.50 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Be6 Bg5 6.Bd5 Bf4 (267.405) 397
12.05 0:01 -2.33 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bg5 6.Be6 h3+ 7.Kg3 h2 8.Bd5 h1Q
9.Bxh1 (588.824) 538
13.01 0:01 -2.47 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bg5 6.Be6 Bf4 7.Bd5 Be3 (728.082) 575
13.02 0:01 -2.31 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Bd5 Bg5 6.Be6 Bf4 7.Bd5 (790.710) 588
14.01 0:01 -2.47 1.Ba2 Kd4 2.Be6 Kc3 3.g4 h4 4.Bf7 Kb2
5.Bd5 Bg5 6.Be6 Bf4 7.Bd5 Be3 (908.553) 605
14.02 0:01 -2.27 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bf6 6.Be6 h3+ 7.Kh2 Bg5 8.Bd5 Bf4+
9.Kxh3 (1.120.650) 640
15.01 0:02 -2.47 1.Bg6+ Kd4 2.Bf7 Kc3 3.Bd5 Kb2 4.g4 h4
5.Bc4 Bd8 6.Bf7 Bg5 7.Bc4 Bf4 8.Bd5 Be3 (1.431.092) 673
15.04 0:02 -2.07 1.Be6 Kd4 2.Kf3 Bg5 3.Bf7 Kc3 4.Ke4 Kb2
5.Kf5 Bh6 6.Kg6 Be3 7.Kxh5 Bd4 8.g4 (2.117.788) 709
16.01 0:03 -2.47 1.Be6 Kd4 2.Kf3 Bg5 3.Bf7 Bh6 4.g4 h4
5.Kg2 Kc3 6.Bg8 Kb2 7.Be6 Bf4 8.Bd5 Be3 (2.888.067) 739
17.01 0:07 -2.33 1.Be6 Bg5 2.g4 Ke5 3.Bg8 h4 4.Bf7 Kd4
5.Bg8 Kc3 6.Bd5 Kb2 7.Bc4 Bf4 8.Bd5 Be3
9.Be6 (5.828.381) 781
18.01 0:12 -2.27 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Kc3
5.Ke4 Kb2 6.Kf5 Be3 7.Bd5 Bd4 8.Kg6 Bc3
9.Kxh5 Bd4 (10.069.836) 817
19.01 0:18 -2.27 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.g4 h4 6.Kf2 Bg5 7.Bf7 Bh6 8.Bg8 Kc3
9.Bf7 Kb2 10.Kg2 (15.934.833) 842
20.01 0:32 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Kc3
5.Ke4 Bg5 6.Kf5 Bd8 7.Bf7 Kb2 8.Bd5 Be7
9.Kg6 Kb1 10.Kxh5 Kb2 (28.121.054) 864
21.01 0:45 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.Bf7 Bg5 6.Ke2 Kc3 7.Kf3 Kb2 8.Bd5 Bd8
9.Be6 Be7 10.Ke4 Bd6 11.g4 (39.742.906) 871
22.01 1:37 -2.17 1.Be6 Bg5 2.Bf7 Kd4 3.Kf3 Bh6 4.Be6 Bd2
5.Bf7 Bg5 6.Ke2 Kc3 7.Kf3 Kb2 8.Bd5 Bd8
9.Ke3 Ba5 10.g4 h4 11.g5 h3 12.Ke4 (83.134.800) 854
23.01 2:41 -2.09 1.Be6 Bg5 2.Ba2 Kd3 3.Kf3 Kd4 4.Bg8 Bd2
5.Ba2 Kc3 6.Ke4 Kb2 7.Bd5 Bc3 8.Kf3 Bf6
9.Ke4 Kb1 10.Kf3 Be7 11.Be4+ Ka2
12.Bd5+ Kb2 13.Ke4 (139.368.651) 863
24.01 4:21 -2.03 1.Be6 Bg5 2.Ba2 Kd3 3.Kf3 Kd4 4.Bg8 Bd2
5.Ba2 Kc3 6.Ke4 Kb2 7.Bd5 Bc3 8.Kf5 Be1
9.Kg6 Bf2 10.Bf7 Bd4 11.Kxh5 Be3
12.g4 Bd4 (224.799.138) 860
25.01 9:06 -1.76 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc3 8.Be6 Kb2
9.Ke4 Bg7 10.Kf4 Kb1 11.Bd5 Bb2
12.Kf5 Ba1 13.Ke4 (453.582.466) 829
26.01 12:38 -1.76 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc3 8.Be6 Kb2
9.Ke4 Bg7 10.Kf4 Bc3 11.Bf7 Bb4
12.Bd5 Bd2+ 13.Kf3 Ka1 14.Ke4 (618.380.453) 815
27.01 27:24 -1.66 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc2 8.Bd5 Kb2
9.Ke4 Ka1 10.Kf5 Be3 11.Ke4 Bc1
12.Bc4 Bh6 13.Bd5 Bg5 14.Kd3 (1.262.457.515) 767
28.01 46:58 -1.66 1.Be6 Bg5 2.Bg8 Kd4 3.Be6 Kc3 4.Kf3 Kd3
5.Bd5 Bd2 6.Be6 Bh6 7.Bf7 Kc2 8.Bd5 Kb2
9.Ke4 Bg5 10.Kf5 Be3 11.Kg6 Kb1
12.Kxh5 Bd2 13.Kg4 Kb2 14.Kf5 (2.092.287.195) 742
29.01 146:04 -1.25 1.Be6 Bg5 2.Bf7 Kd4 3.Ba2 Ke3 4.Be6 Be7
5.Bf7 Bf6 6.Bd5 Kd4 7.Bf7 Ke5 8.Kf3 Bg5
9.Ba2 Bd2 10.Ke2 Bb4 11.Bf7 Bd6
12.Kf3 Kd4 13.Ba2 Be5 14.Be6 (6.004.585.272) 685
best move: Bf7-e6 time: 179:44.500 min n/s: 681.190 nodes: 7.346.280.000
and now after entering 1. g3-g4:
[d]8/4bB2/8/7p/4k1P1/p7/6K1/8 b - -
Engine: Ancalagon 2.0 Beta 003 (256 MB)
by Tord Romstad, Eelco de Groot
2.00 0:00 +1.86 1...hxg4 2.Kg3 (121)
3.00 0:00 +1.94 1...hxg4 2.Kg3 Kf5 (269)
4.00 0:00 +1.80 1...hxg4 2.Kg3 Kf5 3.Kg2 (516)
5.00 0:00 +2.17 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 (1.178)
6.00 0:00 +2.29 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bd5 (2.096)
7.00 0:00 +2.25 1...hxg4 2.Kg3 Kf5 3.Bd5 Bg5 4.Bc4 Bf4+
5.Kf2 (4.176) 261
8.00 0:00 +2.43 1...hxg4 2.Kg3 Kf5 3.Kg2 Bd6 4.Kf2 Ke4
5.Be6 (9.012) 563
9.00 0:00 +2.33 1...hxg4 2.Kg3 Kf5 3.Bc4 Bd6+ 4.Kf2 Kf4
5.Ke2 Ke4 6.Kd2 (13.010) 419
10.00 0:00 +2.35 1...hxg4 2.Kg3 Kf5 3.Bc4 Bd6+ 4.Kf2 Kf4
5.Be6 Bf8 6.Bd5 Bd6 (20.794) 442
11.00 0:00 +2.39 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Ke5
5.Bb3 Kf4 6.Ke2 Ke4 7.Kd2 (40.836) 648
12.00 0:00 +2.43 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Ke5
5.Bb3 Kf4 6.Bd5 Bc5+ 7.Ke2 Ke5 8.Bc4 (76.107) 691
13.00 0:00 +2.49 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Kg2 Bc5 6.Bc4 Be3 7.Bd5 Bd4 8.Bc4 (165.392) 703
14.00 0:00 +2.49 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Bf7 Bc5+ 6.Kg2 Bb4 7.Kf2 Bd6 8.Bd5 Bc5+
9.Ke2 Ke5 (246.060) 750
15.00 0:00 +2.50 1...hxg4 2.Kg3 Kf5 3.Bd5 Bd6+ 4.Kf2 Kf4
5.Bf7 Bc5+ 6.Kg2 Bd4 7.Bd5 Bb6 8.Be6 Ke5
9.Bc4 Kf4 (459.647) 795
16.00 0:00 +2.50 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bg8 Bh4
5.Bd5 Ke3 6.Be6 Ke4 7.Ba2 Ke5 8.Bc4 Be1
9.Bf7 (787.514) 812
17.01 0:01 +2.52 1...hxg4 2.Kg3 Kf5 3.Kg2 Kf4 4.Bg8 Bh4
5.Bd5 Ke3 6.Be6 Ke4 7.Ba2 Ke5 8.Bf7 Kf5
9.Bd5 Ke5 (1.292.724) 844
18.01 0:02 +3.98 1...hxg4 2.Kg3 Kf5 3.Kg2 Bd6 4.Kf2 Ke4
5.Be6 Kd4 6.Ke2 Kc3 7.Kd1 g3 8.Ke2 Kb2
9.Kf1 a2 10.Bxa2 Kxa2 11.Kg2 (2.233.878) 861
19.01 0:03 +3.98 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Kd4 6.Kd2 Bd6 7.Be6 g3 8.Ke2 Kc3
9.Kf3 Kb2 10.Bd5 a2 11.Bxa2 Kxa2
12.Kg2 (3.097.563) 880
20.01 0:05 +4.96 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Kd4 6.Kd2 Bd6 7.Be6 g3 8.Ke2 Kc3
9.Kf3 Kb2 10.Bd5 a2 11.Bxa2 Kxa2
12.Kg2 Kb3 (4.804.050) 904
21.01 0:08 +4.96 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Be3 6.Be6 Kd4 7.Kf1 Kc3 8.Ke2 Bf4
9.Ke1 Bd6 10.Kd1 Kb2 11.Ke2 a2
12.Bxg4 a1R 13.Kd3 (7.197.136) 889
22.01 0:12 +6.43 1...hxg4 2.Kg3 Kf5 3.Kf2 Bc5+ 4.Ke2 Ke4
5.Bg8 Be3 6.Be6 Kd4 7.Kf1 Kc3 8.Kg2 Bf4
9.Bg8 Bd6 10.Kf2 Kb2 11.Kg1 a2
12.Bxa2 Kxa2 13.Kg2 Kb3 (11.745.236) 937
best move: h5xg4 time: 0:19.562 min n/s: 913.931 nodes: 17.850.000
Only around 18 plies the score for Black is really going up.
Regards, Eelco
-
JensBNielsen
Re: An interesting position, where Genius played g3-g4?
Hi Eelco
Thanks for your posting.
I noticed your program even didn't consider to win the white bishop for the a-pawn. Perhaps it at the same depth can see, that black loses the h-pawn and only has a draw...
Jens
PS. Ted; thanks for your nice layout.
I hope it will make it more easy for other members here to test the position and show their results...
Thanks for your posting.
I noticed your program even didn't consider to win the white bishop for the a-pawn. Perhaps it at the same depth can see, that black loses the h-pawn and only has a draw...
Jens
PS. Ted; thanks for your nice layout.
I hope it will make it more easy for other members here to test the position and show their results...