Author: Miguel A. Ballicora
Date: 09:16:04 04/04/02
Go up one level in this thread
On April 04, 2002 at 11:52:29, Art Basham wrote:
>Thanks...that's great..!
>
>But does your 8 ply level also play
>3. QxR+..etc...?
>
>At move 3...white mates in 11...!
Gaviota 0.31 has a similar behavior. The point is that Qxf5+ is not necessary
because g4 wins too. It solves is in 7.7 seconds (p4 1.4 Ghz) because it sees
g4
To test the mate, you can start from this position
[D]2r3n1/p3q1b1/n2p2kp/1b1PPr2/1pp2P2/1P4P1/P1QB2BP/4RRK1 w - - 0 5
88000 6 0.8 :-) g3-g4
106985 6 1.0 :-) g3-g4
123458 6 1.1 +3.02 g3-g4 Bb5-d7 Bg2-e4 c4xb3
Be4xf5 Kg6-f7 e5-e6 Kf7-f8
Qc2xb3
260750 6: 2.2 +3.02 g3-g4 Bb5-d7 Bg2-e4 c4xb3
Be4xf5 Kg6-f7 e5-e6 Kf7-f8
Qc2xb3
540180 7 4.9 +3.14 g3-g4 Bb5-d7 e5-e6 Bg7-d4
Kg1-h1 Bd7-b5 g4xf5 Kg6-g7
Re1-e4 Bd4-b6 b3xc4
1036949 7: 9.0 +3.14 g3-g4 Bb5-d7 e5-e6 Bg7-d4
Kg1-h1 Bd7-b5 g4xf5 Kg6-g7
Re1-e4 Bd4-b6 b3xc4
1543078 8 13.9 +3.14 g3-g4 Bb5-d7 e5-e6 Bg7-d4
Kg1-h1 <-transp
3661395 8: 31.8 +3.14 g3-g4 Bb5-d7 e5-e6 Bg7-d4
Kg1-h1 <-transp
6415589 9 56.9 +3.08 g3-g4 Qe7-f8 Bg2-e4 Ng8-e7
e5xd6 c4xb3 d6xe7 b3xc2
e7xf8=Q Rc8xf8 Be4xf5 Rf8xf5
g4xf5 <EMPTY> <-transp
8851322 9 77.2 :-) Qc2xf5
8999407 9 78.4 :-) Qc2xf5
9189739 9 80.1 :-) Qc2xf5
9243914 9 80.5 :-) Qc2xf5
12931871 9 106.5 +Mat_13 Qc2xf5 Kg6xf5 Bg2-e4 Kf5-g4
h2-h3 Kg4xg3 Re1-e3 Kg3-h4
Be4-g6 Qe7-g5 f4xg5 Rc8-f8
Bd2-e1 Rf8-f2 Re3-e4 Kh4xh3
Bg6-f5 Kh3-g3 Be1xf2 Kg3-f3
Bf2xa7 Kf3-g3 Re4-g4 Kg3-h3
Rf1-f3
13019484 9: 107.2 +Mat_13 Qc2xf5 Kg6xf5 Bg2-e4 Kf5-g4
h2-h3 Kg4xg3 Re1-e3 Kg3-h4
Be4-g6 Qe7-g5 f4xg5 Rc8-f8
Bd2-e1 Rf8-f2 Re3-e4 Kh4xh3
Bg6-f5 Kh3-g3 Be1xf2 Kg3-f3
Bf2xa7 Kf3-g3 Re4-g4 Kg3-h3
Rf1-f3
22935594 10 170.2 +Mat_11 Qc2xf5 Kg6xf5 Bg2-e4 Kf5-g4
h2-h3 Kg4xg3 Re1-e3 Kg3-h4
Be4-g6 Qe7-g5 f4xg5 Rc8-f8
Bd2-e1 Rf8-f2 Re3-e4 Kh4xh3
Bg6-f5 Kh3-g3 Be1xf2 Kg3-f3
Bf2-h4
23290741 10: 172.8 +Mat_11 Qc2xf5 Kg6xf5 Bg2-e4 Kf5-g4
h2-h3 Kg4xg3 Re1-e3 Kg3-h4
Be4-g6 Qe7-g5 f4xg5 Rc8-f8
Bd2-e1 Rf8-f2 Re3-e4 Kh4xh3
Bg6-f5 Kh3-g3 Be1xf2 Kg3-f3
Bf2-h4
From the position you posted gaviota sees:
611599 8 5.3 +2.29 Ne3xf5 c4xb3 Qc2xc8 Rf8xc8
Nf5xe7 Ng8xe7 a2xb3 Bb5xf1
Bg2xf1
900784 8 7.7 :-) Nh4xg6
903383 8 7.7 +3.02 Nh4xg6 Kh7xg6 Ne3xf5 Rf8xf5
g3-g4 Bb5-d7 Bg2-e4 c4xb3
<-transp
921160 8: 7.9 +3.02 Nh4xg6 Kh7xg6 Ne3xf5 Rf8xf5
g3-g4 Bb5-d7 Bg2-e4 c4xb3
<-transp
1372621 9 12.0 +3.02 Nh4xg6 Kh7xg6 Ne3xf5 Rf8xf5
g3-g4 Bb5-d7 Bg2-e4 c4xb3
<-transp
2300746 9: 20.0 +3.02 Nh4xg6 Kh7xg6 Ne3xf5 Rf8xf5
g3-g4 Bb5-d7 Bg2-e4 c4xb3
<-transp
6699576 10 61.3 +3.11 Nh4xg6 Kh7xg6 Ne3xf5 Rf8xf5
g3-g4 Bb5-d7 e5-e6 Bg7-d4
Kg1-h1 Bd7-e8 Qc2xf5 Kg6-g7
Qf5-c2
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