Author: Bernhard Bauer
Date: 00:24:35 10/24/05
Go up one level in this thread
On October 23, 2005 at 09:08:12, Uri Blass wrote: >[D]4qr2/4p2k/1p2P1pP/5P2/1P3P2/6Q1/8/3B1K2 w - - 0 1 > >The solution of this study is Ba4 b5 fxg6+ > >Fruit2.2 default can see high score at depth 18 with the right solution >Fruit2.2 Uri cannot see it even at depth 19(it can see Ba4 b5 Bc2 as the main >line) > >At 120/40 Fruit2.2 default can play the right moves >Fruit2.2 Uri cannot find 2.fxg6+ when it gets depth 18 in a game when it already >got depth 18 for 1.Ba4 > >Fruit2.2 Uri has no problem to find high score for 2.fxg6 with clear hash at >depth 15 >It seems that without clear hash 2.fxg6 is not in the pv so it is pruned by >Fruit2.2 Uri when with clear hash it has not the same problem. > >I thought that history pruning=70 means less accuracy at the same depth relative >to history pruning=50 but I am even not sure about it after analyzing this >study. > >Uri Hi Uri, Fruit2.1+b1 gives FEN: 4qr2/4p2k/1p2P1pP/5P2/1P3P2/6Q1/8/3B1K2 w - - 0 1 Fruit_21+_b1+HDP50: 8/29 00:01 383.448 0 +4,01 f5xg6+ Qe8xg6 Bd1c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Qg5g2 Kh7xh6 Bc2xg6 Re6xg6 9/29 00:01 561.629 0 +1,52 f5xg6+ Qe8xg6 Bd1c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Kh6g6 Qe7f7+ Kg6g5 9/29 00:01 835.656 0 +3,89 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g2 Rf6xe6 Kg1h2 Kh7xh6 Bc2xg6 Re6xg6 10/30 00:01 921.208 0 +4,80 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Bc2f5 Re6e1+ Kg1f2 Re1f1+ Kf2xf1 11/31 00:02 1.228.680 0 +1,49 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Kh6g6 Qe7f7+ Kg6g5 12/33 00:03 2.334.359 0 +1,49 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Kh6g6 Qe7f7+ Kg6g5 13/34 00:06 3.815.095 674.000 +1,42 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Qd4c4+ Kc2b2 Qc4d4+ Kb2b3 Qd4d3+ Kb3a2 14/37 00:12 8.147.266 694.545 +1,41 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Qd4c4+ Kc2b2 Qc4e2+ Kb2c1 Qe2c4+ Kc1d1 Qc4d4+ Kd1e1 15/39 00:25 17.419.671 699.583 +1,35 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2c4+ Kf1f2 Qc4f4+ Kf2e2 Qf4e4+ Ke2d2 Qe4d4+ Kd2c2 Qd4c4+ Kc2b2 Qc4e2+ Kb2c1 Qe2c4+ Kc1d1 Qc4d4+ Kd1e1 Kh6g6 Qe7f7+ Kg6g5 16/43 00:58 39.290.656 673.720 +1,25 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Qg3xf4 Qg6xc2 Qf4f7+ Kh7xh6 Qf7xe7 Qc2f5+ Kf1e2 Kh6g6 Qe7e8+ Kg6h6 Qe8c6 Kh6g5 e6e7 Qf5e5+ Ke2d3 Qe5xe7 Qc6xb5+ Kg5f4 Qb5c4+ Kf4e5 Qc4e4+ Ke5f6 Qe4xe7+ Kf6xe7 17/61 11:59 466.916.279 649.541 +4,48 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Kg1f1 Re6f6+ Kf1e1 Rf6e6+ Ke1d1 Re6d6+ Kd1c1 Rd6c6 Qg5c5 Rc6xc5 b4xc5 Kh7xh6 Bc2xg6 Kh6xg6 c5c6 18/61 13:29 525.772.508 649.505 +4,11 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Kg1f1 Re6f6+ Kf1e1 Rf6e6+ Ke1d1 Re6d6+ Kd1c1 Rd6c6 Qg5c5 Rc6xc5 b4xc5 Kh7xh6 Bc2xg6 Kh6xg6 c5c6 Kg6f5 19/61 16:34 648.054.055 652.195 +4,48 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Kg1f1 Re6f6+ Kf1e1 Rf6e6+ Ke1d1 Re6d6+ Kd1c1 Rd6c6 Qg5c5 Rc6xc5 b4xc5 Kh7xh6 Bc2xg6 Kh6g7 c5c6 Kg7xg6 20/62 25:39 1.023.520.961 665.127 +5,23 Bd1a4 b6b5 f5xg6+ Qe8xg6 Ba4c2 Rf8xf4+ Kf1g1 Rf4f6 Qg3g5 Rf6xe6 Kg1f1 Re6f6+ Kf1e1 Rf6e6+ Ke1d1 Re6d6+ Kd1c1 Rd6c6 Qg5c5 Kh7xh6 Bc2xg6 Rc6xg6 Qc5xb5 Kh6g7 Qb5c5 Kg7f7 b4b5 This looks pretty good. Kind regards Bernhard
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