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Subject: Re: Interesting Position (from Anand-Bologan)

Author: Dann Corbit

Date: 16:30:52 12/01/00

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Crafty failed to find the answer even after a good, long think:

[D]2b1rb1k/2r2ppp/n2p4/3P2PN/3NPQ2/2p3RP/1q3PK1/1B1R4 w - - bm Nf6;

EPD Kit revision date: 1996.04.21
found computer opening book file [./bookc.bin].
hash table memory = 96M bytes.
pawn hash table memory = 40M bytes.
EGTB cache memory = 64M 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
threshold set to 9 pawns.
6 piece tablebase files found
20899kb of RAM used for TB indices and decompression tables

Crafty v17.14

White(1): st 3600
search time set to 3600.00.
White(1): epdpfga epd.epd epd.out
PFGA: EPD record: 1
middle-game phase
              clearing hash tables
              time surplus   0.00  time limit 60:00 (60:00)
         nss  depth   time  score   variation (1)
                6->   0.23  -0.64   1. Bc2 Qb4 2. Ne2 Kg8 3. Rb1 Qa3
                7     0.56  -0.49   1. Bc2 Nb4 2. Rc1 Nxc2 3. Rxc2 Qb6
                                    4. Nc6 g6
                7->   0.61  -0.49   1. Bc2 Nb4 2. Rc1 Nxc2 3. Rxc2 Qb6
                                    4. Nc6 g6
                8     1.10  -0.77   1. Bc2 Nb4 2. Ba4 Rd8 3. Nc6 Nxc6 4.
                                    dxc6 Qe2 5. Rf3
                8->   2.32  -0.77   1. Bc2 Nb4 2. Ba4 Rd8 3. Nc6 Nxc6 4.
                                    dxc6 Qe2 5. Rf3
                9     3.59  -1.10   1. Bc2 Nb4 2. Ba4 Bd7 3. Bxd7 Rxd7
                                    4. Nc6 Nxc6 5. dxc6 Rc7 6. g6 hxg6
                9     9.38  -1.06   1. Rc1 Nb4 2. Kh2 c2 3. Nxc2 Kg8 4.
                                    Nxb4 Qxc1 5. Qxc1 Rxc1 6. Rb3
                9    17.18  -0.89   1. Rf3 Bd7 2. Bc2 Nb4 3. Rc1 Nxc2 4.
                                    Rxc2 Qb4 5. Qe3 g6 <HT>
                9->  18.66  -0.89   1. Rf3 Bd7 2. Bc2 Nb4 3. Rc1 Nxc2 4.
                                    Rxc2 Qb4 5. Qe3 g6 <HT>
               10    44.51  -0.85   1. Rf3 Bb7 2. Bc2 Nb4 3. Rc1 Bxd5 4.
                                    exd5 Nxd5 5. Qf5 Qxc1 6. Qxd5
               10->  54.77  -0.85   1. Rf3 Bb7 2. Bc2 Nb4 3. Rc1 Bxd5 4.
                                    exd5 Nxd5 5. Qf5 Qxc1 6. Qxd5
               11     1:18  -0.81   1. Rf3 Bb7 2. Bc2 Nb4 3. Nb5 Rce7 4.
                                    Nxd6 Qxc2 5. Rd4 Nxd5 6. exd5
               11->   1:54  -0.81   1. Rf3 Bb7 2. Bc2 Nb4 3. Nb5 Rce7 4.
                                    Nxd6 Qxc2 5. Rd4 Nxd5 6. exd5
               12     3:15  -0.85   1. Rf3 Bd7 2. Bc2 Nb4 3. Rc1 Nxc2 4.
                                    Rxc2 Ba4 5. Rxb2 cxb2 6. Nb5 Bxb5 7.
                                    Rb3 Be2
               12     4:14     ++   1. Qc1!!
               12     5:31  -0.34   1. Qc1 Bd7 2. Nc6 Qxc1 3. Rxc1 Rec8
                                    4. Rgxc3 Nb4 5. Rf3 Nxc6 6. dxc6 Bxc6
                                    7. Rxc6 Rxc6 8. Rxf7
               12->   5:43  -0.34   1. Qc1 Bd7 2. Nc6 Qxc1 3. Rxc1 Rec8
                                    4. Rgxc3 Nb4 5. Rf3 Nxc6 6. dxc6 Bxc6
                                    7. Rxc6 Rxc6 8. Rxf7
               13     6:56  -0.18   1. Qc1 Bd7 2. Qxb2 cxb2 3. Rd2 Nc5
                                    4. Rxb2 Nxe4 5. Bxe4 Rxe4 6. Rb8 Rc8
                                    7. Rxc8 Bxc8 8. Nc6 Rh4 9. Na7
               13->   8:19  -0.18   1. Qc1 Bd7 2. Qxb2 cxb2 3. Rd2 Nc5
                                    4. Rxb2 Nxe4 5. Bxe4 Rxe4 6. Rb8 Rc8
                                    7. Rxc8 Bxc8 8. Nc6 Rh4 9. Na7
               14    12:33  -0.14   1. Qc1 Bd7 2. Nc6 Rec8 3. Qxc3 Qb7
                                    4. Qf3 Bxc6 5. dxc6 Rxc6 6. Ba2 g6
                                    7. Nf6 Rc2 8. Bd5
               14->  27:17  -0.14   1. Qc1 Bd7 2. Nc6 Rec8 3. Qxc3 Qb7
                                    4. Qf3 Bxc6 5. dxc6 Rxc6 6. Ba2 g6
                                    7. Nf6 Rc2 8. Bd5
               15    35:58  -0.21   1. Qc1 Bd7 2. Nc6 Bxc6 3. Rxc3 Qxc1
                                    4. Rdxc1 Bxd5 5. Rxc7 Nxc7 6. Rxc7
                                    Bxe4+ 7. Bxe4 Rxe4 8. Rxf7 Kg8 9. Kf3
                                    Re2
              time=60:00  cpu=99%  mat=0  n=2019463450  fh=5%  nps=560909
              ext-> checks=65016344 recaps=5472614 pawns=8697357 1rep=7005078
thrt:1340833
              predicted=0  nodes=2019463450  evals=505158230
              endgame tablebase-> probes done=0  successful=0



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