Author: Heiner Marxen
Date: 15:30:51 07/08/01
Go up one level in this thread
On July 08, 2001 at 17:56:52, Pete Galati wrote: >On July 08, 2001 at 17:06:15, leonid wrote: > >>On July 08, 2001 at 17:01:07, leonid wrote: >> >>>Hi! >>> >>>Probably this mate every program will find easy and accessible. >>> >>>[D]q4q2/Q3pq2/KN1k1nR1/BBqb1rQQ/NN1n1rR1/Q3pp2/q4b2/8 w - - >>> >>>Please indicate your result. >>> >>>Thanks, >>>Leonid. > >I haven't given much thought of what to do with the Crafty rc file since getting >some more memory, but this should about do the trick for analyzing probably. > >Pete > >hash table memory = 192M bytes. >pawn hash table memory = 5M bytes. >EGTB cache memory = 6M bytes. >5 piece tablebase files found >1836kb of RAM used for TB indices and decompression tables > >Crafty v18.10 > > 9 5:01 Mat11 1. Qxf4+ e5 2. Qxe5+ Rxe5 3. Qxe5+ > Kxe5 4. Nd3+ Ke6 5. Naxc5+ Qxc5 6. > Nxc5+ Ke5 7. R6g5+ Nf5 8. Nd3+ Ke6 > 9. Nf4+ Ke5 10. Bc3+ Ke4 11. Bd3# > 9-> 5:37 Mat11 1. Qxf4+ e5 2. Qxe5+ Rxe5 3. Qxe5+ > Kxe5 4. Nd3+ Ke6 5. Naxc5+ Qxc5 6. > Nxc5+ Ke5 7. R6g5+ Nf5 8. Nd3+ Ke6 > 9. Nf4+ Ke5 10. Bc3+ Ke4 11. Bd3# >10 7:12 Mat11 1. Qxf4+ e5 2. Qxe5+ Rxe5 3. Qxe5+ > Kxe5 4. Nd3+ Ke6 5. Naxc5+ Qxc5 6. > Nxc5+ Ke5 7. R6g5+ Nf5 8. Nd3+ Ke6 > 9. Nf4+ Ke5 10. Bc3+ Ke4 11. Bd3# >10-> 10:50 Mat11 1. Qxf4+ e5 2. Qxe5+ Rxe5 3. Qxe5+ > Kxe5 4. Nd3+ Ke6 5. Naxc5+ Qxc5 6. > Nxc5+ Ke5 7. R6g5+ Nf5 8. Nd3+ Ke6 > 9. Nf4+ Ke5 10. Bc3+ Ke4 11. Bd3# >11 18:52 Mat11 1. Qxf4+ e5 2. Qxe5+ Rxe5 3. Qxe5+ > Kxe5 4. Nd3+ Ke6 5. Naxc5+ Qxc5 6. > Nxc5+ Ke5 7. R6g5+ Nf5 8. Nd3+ Ke6 > 9. Nf4+ Ke5 10. Bc3+ Ke4 11. Bd3# Chest does confirm this (i.e. there is no shorter mate) with a slightly different PV: PV: Qxf4+ e5 Qxe5+ Rxe5 Qxe5+ Kxe5 Nd3+ Ke6 Naxc5+ Qxc5 Nxc5+ Ke5 Nbd7+ Qxd7 Nxd7+ Kf5 R6g5+ Ke6 Re5+ Kf7 Re7# The first 6 moves are the same. (K7/600, 30 MB hash, 46.45 sec) No other move is a solution for the mate in 11. The effective branching factor for Chest is quite nice (i.e. small) here: depth time EBF # 3 0.01s 0kN 0.93 50- 0 # 4 0.02s [ 2.00] 1kN 1.16 102- 0 # 5 0.09s [ 4.50] 6kN 1.41 388- 0 # 6 0.31s [ 3.44] 26kN 1.80 1467- 0 # 7 1.00s [ 3.23] 85kN 2.22 3959- 0 # 8 3.33s [ 3.33] 280kN 2.85 12904- 0 # 9 7.64s [ 2.29] 632kN 3.72 31382- 0 # 10 19.15s [ 2.51] 1480kN 4.42 92131- 0 # 11 46.44s [ 2.43] 3404kN 5.54 239764- 28 Cheers, Heiner
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