Author: F. Huber
Date: 05:41:37 01/18/05
Go up one level in this thread
On January 18, 2005 at 07:59:56, Stan Arts wrote: >On January 18, 2005 at 00:37:55, Rob Basham wrote: > >>[D]rq2r2k/b4pp1/2R4p/p5N1/3nN3/1P6/PK2nPRP/3Q4 w - - 0 1 >> >>Rxh6+ mates! >> >>Junior 5 will ann. a mate in 10 in 14 sec. > > >Thanks for the position. > >Lots of checks, Neurosis finds Rxh6+ instantly and announces mate in 10 on >depth 11. It finds a shorter mate in 9 one depth later. > >P3-550 48mb hash. > >Legal moves: 50 Static score: -327 >Ply Score Time Nodes Best move and expected line >------------------------------------------------------------ >2 -210 5 588 Rxh6+ Kg8 >3 -159 5 837 Rxh6+ Kg8 Nf6+ gxf6 Ne6+ Ng3 >3 -102 5 965 Nxf7+ Kg8 Nxh6+ Kh8 >4 -225 16 6099 Nxf7+ Kg8 Nf7-d6 Nxc6 >4 435 22 6788 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 >5 435 33 11875 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 >6 435 88 34806 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 >7 435 225 113708 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 Kxe8 >8 437 807 481706 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 Kxe8 >a3 >9 440 2900 1901027 Rxh6+ Kg8 Nf6+ Kf8 Rh8+ Ke7 Rxe8+ Qxe8 Nxe8 Kxe8 >Nf3 Nxf3 >10 476 8420 5295237 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Qxh2 Rh6xh2 Nxb3 >Ra8-c8 >10 556 8469 5317920 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Qxh2 Rh6xh2 Nxb3 >Ra8-c8 >10 796 8963 5554410 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Qxh2 Rh6xh2 Re8-b8 >Qd3 g6 >10 800 10754 6574563 Rxh6+ Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 Nf5 >Nf6+ gxf6 Nh7+ Nf5-g3 Nxf6+ Kg7 >11 837 17471 11974682 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 >Re7 Nxe7+ >11 917 17477 11976420 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 >Re3 fxe3 >11 1157 17504 11985798 Rxh6+ < + > Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 >Re4 Nxe4 >11 31980 24645 16697059 Rxh6+ <M10> Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 >Re4 Rh8+ Kxh8 Qh3+ Rh4 Qxh4+ Kg8 >12 31982 78840 49032323 Rxh6+ <M9> Kg8 Nf6+ Kf8 Nd5 Kg8 Qd3 Qxb3+ axb3 >Re4 Qxe4 g6 Rxg6+ fxg6 Qxg6+ Kf8 Nh7+ >Total nodes:134390366 n/sec:72400 (q-nodes:8% max depth:31) > >(I've increased my mate-values to 32000 minus distance. (was 10000 before.) >Because I'll start scoring in 1/200th of a pawn, with 16 bit values. So >scores will be 2x as big, and divided by 2 before showing them to the user, >but I'm working on that and here I'm not doing that yet.) > >Greetings Stan Hello Stan, IMO "32000 minus distance" is not a good idea for stating a mate value, since this is absolutely non-standard, and so every existing GUI would certainly show a completly nonsense mate value! I think you should either stay with the distance to 10000 (this is the way that TheKing does it), or even better switch to the PGN/EPD-standard evaluation of mates, which counts from 32768 - maybe you should have a look at http://www.drb.insel.de/~heiner/Chess/PGN_Standard.txt and go to the section ´16.2.5.6: Opcode "ce": centipawn evaluation´. Best regards, Franz.
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