Author: John Merlino
Date: 14:54:29 03/01/01
Go up one level in this thread
On March 01, 2001 at 16:25:01, Sune Larsson wrote: > > [D]8/2b2pp1/K2p4/p4P2/P7/6P1/8/2k3B1 w - - 0 1 > > Troitzky 1923 > > Hm, a bishopending with black a pawn up. But white's king is much > better positioned. White's bishop is a real flyer while the black > one tries to take off again and again - but never makes it... > A flyer versus a goose and the hunt is just about to start. > > Test: If your program is a flyer or a goose. The faster the better > But the evals should show that white is *winning* > > > Sune It takes a decent amount of time for CM8000 to see anything that looks "good" for White, and it has a difficult time making up its mind (4 different "best" moves between the 14/15 depth and the 16/17 depth!). It certainly doesn't see a guaranteed win though: Time Depth Score Positions Moves 0:00 6/7 -0.06 12526 1. Kb7 Bd8 2. Kc6 Kc2 3. Kxd6 Kb3 4. Bd4 Kxa4 5. Bxg7 0:00 8/9 -0.38 64193 1. Kb7 Bd8 2. Kc6 Kc2 3. Kxd6 Kb3 4. Bd4 Kxa4 5. Bxg7 Kb3 0:01 8/9 0.01 106954 1. Bd4 Kc2 2. Bxg7 d5 3. Kb5 Kb3 4. Bd4 Kc2 5. Kc5 0:02 9/10 0.07 177225 1. Bd4 g6 2. Kb7 Bd8 3. fxg6 fxg6 4. Kc6 Kc2 5. Kxd6 Kb3 6. Kd7 Bg5 0:04 10/11 -0.06 370275 1. Bd4 d5 2. Bxg7 Kd2 3. Kb5 Bxg3 4. Kxa5 Ke3 5. Kb4 Ke4 6. a5 Kxf5 0:09 11/12 -0.75 888652 1. Bd4 g6 2. Kb7 Bd8 3. Kc6 gxf5 4. Kxd6 Kc2 5. Be5 Kb3 6. Kd7 Bg5 0:11 11/12 -0.52 1204567 1. Kb7 Bd8 2. Kc6 Kc2 3. Kxd6 Kb3 4. Bd4 Kxa4 5. Bxg7 Kb3 6. Kd5 a4 0:17 12/13 -0.60 1818050 1. Kb7 Bd8 2. Bd4 Kc2 3. Bxg7 Kb3 4. Kc6 Kxa4 5. Kd7 Bg5 6. Kxd6 Kb3 7. Kd5 a4 0:20 12/13 0.00 2205271 1. Bd4 Bd8 2. Bxg7 Kc2 3. Kb5 d5 4. g4 Kd3 5. Kc5 Ke4 6. Bc3 Be7+ 7. Kb5 Bd8 8. Kc5 0:30 13/14 -0.19 3437250 1. Bd4 Kc2 2. Bxg7 d5 3. g4 Bd8 4. Kb5 Kd3 5. f6 Ke4 6. g5 Ke5 7. Kc5 d4 8. Kc4 0:58 14/15 -0.31 6614758 1. Bd4 d5 2. Bxg7 Kc2 3. g4 Bd8 4. Bh6 f6 5. g5 fxg5 6. Bg7 Kb3 7. Kb5 g4 8. Kc5 1:15 14/15 -0.17 8697895 1. Be3+ Kc2 2. Bf4 Kd3 3. Kb7 Bd8 4. Bxd6 Ke4 5. Kc8 Bf6 6. Bc7 Bc3 7. g4 Kf3 8. g5 Ke4 9. f6 gxf6 10. gxf6 1:17 14/15 -0.03 8981368 1. Kb7 Bd8 2. Bd4 Kc2 3. Bxg7 Kb3 4. Kc6 Kxa4 5. Kd7 Bg5 6. f6 d5 7. Ke7 Kb4 8. Kxf7 1:45 15/16 0.13 12124153 1. Kb7 Bd8 2. Bd4 Kc2 3. Kc6 Kd3 4. Bxg7 Ke4 5. Kd7 Bg5 6. Kxd6 Kxf5 7. Bc3 Bd8 8. Kd5 Bc7 2:42 16/17 0.28 18788792 1. Kb7 Bd8 2. Bd4 Kc2 3. Kc6 d5 4. Kxd5 Bc7 5. Bf2 Kb3 6. Kc6 Bd8 7. Kb5 Bc7 8. Be1 g5 9. Bxa5 Bxg3 4:21 16/17 0.39 29016492 1. f6 gxf6 2. Kb7 Bd8 3. Kc8 Be7 4. Be3+ Kc2 5. Kd7 Bf8 6. Ke8 Bg7 7. Kxf7 Bh8 8. Kg8 Kb3 9. Kxh8 Kxa4 10. Kg7 5:31 17/18 0.39 35627359 1. f6 gxf6 2. Kb7 Bd8 3. Kc8 Be7 4. Be3+ Kc2 5. Kd7 Bf8 6. Ke8 Bg7 7. Kxf7 Bh8 8. Kg8 Kb3 9. Kxh8 Kxa4 10. Kg7 14:33 18/19 0.84 85663768 1. f6 gxf6 2. Kb7 Bd8 3. Kc8 Be7 4. Be3+ Kc2 5. Kd7 Bf8 6. Ke8 Bg7 7. Kxf7 Bh8 8. Kg8 Kb3 9. Kxh8 Kxa4 10. Kg7 f5 11. Kf6 jm
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