Author: Jeremiah Penery
Date: 18:03:46 08/24/04
Go up one level in this thread
On August 24, 2004 at 00:23:38, Eric Jensen wrote:
>I have recently come across the following position,
>
>/r5k/pp2qppp/2b/n/2pPr/P1P1PQ1P/1B4P/1B2RRK/
>
>with white to move. It will be white's 21st move. I have let crafty run and
>analyze this position for over 2 hours, and it returns a value of over +2 for
>white. However, I don't think that crafty understands the position, because
>I've had it sort of play against itself (I was using SCID for analysis, and
>pulled up the engine analysis with crafty) by making it's best move for each
>side after about a min or so each time, and it routinely wins with black.
>
>I would be interested to see a Deep Position evaluation of hte position from
>Shredder or Junior or something Stronger than Crafty, but also I would be
>interested in seeing games from a short engine match with this start position,
>just to see if the evaluations can be trusted.
I have an old modified Crafty I made and this is what it tells me:
Modified Crafty 19.1(?), AthlonXP 1900+
10 7.34 -0.06 1. Bxe4 Bxe4 2. Qg4 b5 3. Kh2 Nb3 4.
Rd1 f5 5. Qf4 Qb7
10-> 20.53 -0.06 1. Bxe4 Bxe4 2. Qg4 b5 3. Kh2 Nb3 4.
Rd1 f5 5. Qf4 Qb7
11 28.25 -0.03 1. Bxe4 Bxe4 2. Qh5 Nb3 3. Rf4 Bxg2
4. Qxf7+ Qxf7 5. Rxf7 Kxf7 6. Kxg2
Rf8
11 50.62 0.18 1. Qf5 g6 2. Qf6 Re6 3. Qxe7 Rxe7 4.
e4 Rae8 5. Rf4 Nb3 6. Kh2 <HT>
11-> 59.20 0.18 1. Qf5 g6 2. Qf6 Re6 3. Qxe7 Rxe7 4.
e4 Rae8 5. Rf4 Nb3 6. Kh2 <HT>
12 1:16 0.05 1. Qf5 g6 2. Qf6 Re6 3. Qxe7 Rxe7 4.
e4 Rae8 5. Rf4 Nb3 6. Bc2 Nd2
12-> 17:16 0.05 1. Qf5 g6 2. Qf6 Re6 3. Qxe7 Rxe7 4.
e4 Rae8 5. Rf4 Nb3 6. Bc2 Nd2
13 18:30 0.29 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Bc2 Nb3 6. Rf1 Kg7 7.
Kf2 Rf8+
13-> 20:24 0.29 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Bc2 Nb3 6. Rf1 Kg7 7.
Kf2 Rf8+
14 25:56 0.24 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Bc2 Rf8 6. Rf1 Nb3 <HT>
14-> 76:39 0.24 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Bc2 Rf8 6. Rf1 Nb3 <HT>
15 103:16 0.21 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Rf1 Nb3 6. Rf6 Bd5 7.
Kf2 Kg7 8. Rf4 Rf8 9. Rxf8 Kxf8
15-> 126:49 0.21 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rxe6 fxe6 5. Rf1 Nb3 6. Rf6 Bd5 7.
Kf2 Kg7 8. Rf4 Rf8 9. Rxf8 Kxf8
16 150:59 0.24 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rf4 Rae8 5. e4 Nb3 6. Bc2 f6 7. Ref1
Nd2 8. d5 Nxf1 9. dxe6
16-> 384:17 0.24 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rf4 Rae8 5. e4 Nb3 6. Bc2 f6 7. Ref1
Nd2 8. d5 Nxf1 9. dxe6
17 489:20 0.20 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rf4 Rae8 5. e4 Nb3 6. Kf2 f6 7. Rd1
g5 8. Rf5 g4 9. d5
17-> 895:44 0.20 1. Qf5 g6 2. Qf6 Qxf6 3. Rxf6 Re6 4.
Rf4 Rae8 5. e4 Nb3 6. Kf2 f6 7. Rd1
g5 8. Rf5 g4 9. d5
18 1153:45 1/29? 1. Qf5
Elapsed Time: 1153:46, CPU Time: 1147:59, CPU Use: 99%
Nodes: 24858365339, Evaluations: 2148216470, FH%: 93%, NPS: 359k
EXTENSIONS->
Threat: 6692782, Check: 1518216461, One Move: 101030902
Passed Pawn: 23606622, Recapture: 59761629
PRUNING-> Futility: 4275534194, Razors: 570384065
TABLEBASES-> Probes: 0, Successful: 0
HASHING->
Raw Hits: 244% (418072557/171069176)
Good Hits: 243% (416987868/171069176)
Pawn Hits: 96% (2074248611/-2146750794)
Filled: 99%
EXACT Hits: 0% (622)
LOWER Hits: 197% (337512962)
UPPER Hits: 45% (77621640)
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