Author: Thom Perry
Date: 03:58:07 12/10/98
Go up one level in this thread
On December 10, 1998 at 05:59:30, blass uri wrote: > >On December 10, 1998 at 04:52:08, Bernhard Bauer wrote: > >>On December 10, 1998 at 03:41:14, blass uri wrote: >> >>>8/8/4k2p/N3p1B1/2p1R2K/1p6/p7/2Nb4 w - - 0 1 >>> >>>This position is from an endgame that I composed >>> >>>solution 7.Rxe5+ Kxe5 8.Bxh6+ Kf6 9.Naxb3 cxb3 10.Nxa2 bxa2 11.Bd2 a1Q 12.Bc3+ >>>Qxc3 with stalemate >>> >>>computers like the move 7.Naxb3 or Ncxb3 >>>please wait because a program may find Rxe5+ for the wrong reason and changes >>>its mind. >>> >> >>Here is what crafty thinks: >> 6-> 1.77 -0.65 1. Bf4 a1=Q 2. Rxe5+ Kf6 3. Rd5 Qa4 >> 4. Rxd1 Qxa5 5. Bxh6 >> 7 2.02 -- 1. Bf4 >> 7 3.20 -1.51 1. Bf4 a1=Q 2. Bxe5 Qb1 3. Re1 Kf5 >> 4. Rxd1 Qe4+ 5. Kh5 Kxe5 6. Kxh6 >> 7 3.52 ++ 1. Rxe5+!! >> 7 3.91 draw 1. Rxe5+ Kxe5 2. Bxh6 Kf6 3. Naxb3 >> cxb3 4. Nxa2 bxa2 >> 7-> 5.13 draw 1. Rxe5+ Kxe5 2. Bxh6 Kf6 3. Naxb3 >> cxb3 4. Nxa2 bxa2 >>>The initial position was: >>>2N5/1p1k1qp1/3Pp2P/N1PPpqB1/2p1R1PK/1p6/p7/2Nb4 w - - 0 1 >>>with the solution 1.c6+ bxc6 2.dxc6+ Kxc8 3.d7+ Qxd7 4.cxd7+ Kxd7 5.gxf5 gxh6 >>>6.fxe6+ Kxe6 7.Rxe5+.... >>> >>> >>> >>>8/8/8/1N2k1B1/6K1/pRpp4/1pb5/8 w - - 0 1 >>> >>>This is an endgame composed by suki nahsoni >>> >>>Solution 1.Rxb2 d2 2.Nxc3 d1Q+ 3.Nxd1 Bxd1+ 4.Re2+ Bxe2 5.Kh4 a2 6.Bh6 Kf6 >>>7.Bd2 a1Q 8.Bc3+ Qxc3 >>> >>>computers prefer 1.Bf4+ >>> >> >>Not all programs. Here is what crafty thinks: >> 10-> 1:21 -0.75 1. Rxb2 axb2 2. Nxc3 Kd4 3. Bd2 Kc4 >> 4. Kg5 Kb3 5. Kf6 Kc4 6. Ke6 b1=Q 7. >> Nxb1 Bxb1 >> 11 1:48 draw 1. Rxb2 axb2 2. Nxc3 Kd4 3. Bd2 Kc4 >> 4. Kg5 Kb3 5. Kf6 Kc4 6. Kg5 >> 11-> 3:18 draw 1. Rxb2 axb2 2. Nxc3 Kd4 3. Bd2 Kc4 >> 4. Kg5 Kb3 5. Kf6 Kc4 6. Kg5 >> >>>Alybadix and Gustav are known to be best in solving problems and I want to know >>>if it is only for mate(helpmate) problems or also for composed endgames. >>> >>>Fritz5 is blind in these positions and believe that white is winning. >>> >>>Uri >> >>So crafty solves the 1. position in 4 sec and the 2. position in 2 min. >>Not bad. >> >>Kind regards >>Bernhard > >crafty is using big tablebases and this is the reason that it solves the >position so fast. >(it knows that KBP vs KB is draw in the relevant positions) > >Is there a CD with tablebases for crafty? >It takes too much time to download big tablebases from the internet. > >are there other commercial programs that use database for KBP vs KB or crafty is >the only one? > >Uri M-Chess Pro 7.1 and 8.0 use endgame tablebases that are supplied on the game CDROM.
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