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Subject: Re: Who wins from this position?

Author: Dann Corbit

Date: 12:43:44 09/01/04

Go up one level in this thread


On September 01, 2004 at 13:50:15, Chris Welty wrote:

>This position cropped up recently in a training game for Altamax. It 'd call it
>a test position if I knew who wins, but I don't. Can your engine figure it out?
>
>[D] 2k5/Qp3p1p/2p4p/2R5/4p3/Pb2P3/1r4r1/5K1R w - - 0 33

Crafty on 2.2GHz AMD:

E:\programme\winboard\Crafty>crafty-1916
EPD Kit revision date: 1996.04.21
found computer opening book file [./bookc.bin].
ERROR "krafty fischer " is unknown rc-file option
hash table memory =   96M bytes.
pawn hash table memory =   12M bytes.
EGTB cache memory =    8M bytes.
draw score set to    0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
resign after 5 consecutive moves with score < -9.
5 piece tablebase files found
13980kb of RAM used for TB indices and decompression tables

Crafty v19.16

White(1): hash 512M
hash table memory =  384M bytes.
White(1): hashp 128M
pawn hash table memory =   96M bytes.
White(1): st 3600
search time set to 3600.00.
White(1): epdpfga \altimax.epd altimax.out
PFGA: EPD record: 1
              clearing hash tables
              time surplus   0.00  time limit 60:00 (60:00)
              depth   time  score   variation (1)
                7     0.08   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
                7->   0.25   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
                8     0.48   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
                8->   0.67   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
                9     1.03   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
                9->   1.31   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               10     2.09   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               10->   2.66   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               11     4.83   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               11->   5.69   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               12    11.05   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               12->  13.12   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               13    22.87   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               13->  28.17   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               14    52.17   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               14->   1:07   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               15     2:04   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               15->   3:00   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               16     6:33   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               16->   9:22   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               17    18:41   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               17->  26:25   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
               18    52:20   0.00   1. Qa8+ Kc7 2. Qa5+ b6 3. Qa7+ Kd6
                                    4. Qxb6 Rbf2+ 5. Ke1 Re2+ 6. Kf1 Ref2+
              time=60:00  cpu=99%  mat=2  n=5524520212  fh=90%  nps=1.53M
              ext-> chk=474669595 cap=4519064 pp=697540 1rep=35854360
mate=2239161
              predicted=0  nodes=5524520212  evals=3359364072  50move=0
              endgame tablebase-> probes=2  hits=2
White(1):



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