Author: Chessfun
Date: 07:07:52 09/08/02
Go up one level in this thread
On September 08, 2002 at 09:58:27, Jim Monaghan wrote: >Hi Uri and Allan, > >I think the position is a draw. Allan's idea I think is that White waltzes his >king up to c8 and then mates with Bb7. Black sacrificing all his pawns will >delay that somewhat. > >But if the WK attempts to cross the "Rubicon" (diagonal a8-h1) Black plays >...h2-h1Q+ pretty fast. The only other idea is for the WB to go back along the >diagonal, say Bg2, so as to allow the WK to play Ke4. BUT, this lifts the >stalemate and Black escapes with ...Kb7. If then Kd5 or Kf5+, the position will >still be a draw, as White will have no way of attacking c7 sufficiently to break >through and win all the Black pawns. What about the king simply walking to g2, h3 then to c8. Sarah. Black doesn't have control of the white >squares to get his pawn mass going. So this winning attempt will fail with the >result that it's a draw. The two bishops and the WK will waltz around forever up >to 50 moves and then a draw. > >This is most probably too hard of a concept for programs. The right evaluation >here is +0.00. > >Cheers, >Jim > > >On September 08, 2002 at 05:30:06, Uri Blass wrote: > >>On September 08, 2002 at 04:16:08, Uri Blass wrote: >> >>>On September 08, 2002 at 03:54:40, allan johnson wrote: >>> >>>> How many programmes see that white is winning here?The black king is stalemated >>>>and white's pieces are all on white squares so the white king can simply walk to >>>>c8. Shredder6 and Chess Tiger 14 on my Celeron1.2 show a -6+ for white I guess >>>>that it is too many plies for them. >>>> [D]B7/p1p5/kb1p4/p3p3/P1N2p2/6p1/7p/K7/ >>>> Al >>> >>>Yace can see 2.03 pawns improvement for white >>> >>>The score at depth 1 is 7.54 pawns for black >>>The score at depth 19 is 5.51 pawns for black >>> >>>New position >>>[D]B7/p1p5/kb1p4/p3p3/P1N2p2/6p1/7p/K7 w - - 0 1 >>> >>>Analysis by Yace 0.99.56: > >>>1.Kb2 Bd4+ 2.Kc2 Bc5 3.Bh1 Bb4 4.Kd3 Be1 >>> -+ (-5.51) Depth: 19 00:13:08 424894kN >>> >>>(blass, tel-aviv 08.09.2002) >>> >>>Uri >> >>progress continues >> >> -+ (-5.11) Depth: 20 00:25:48 804415kN >>1.Kb2 Bd4+ 2.Kc2 h1Q 3.Bxh1 g2 4.Bxg2 f3 5.Bxf3 d5 >> -+ (-5.11) Depth: 20 00:30:24 944391kN >>1.Kb2 Bd4+ 2.Kc2 Bc5 3.Kd3 Bf2 4.Bg2 Bd4 5.Bh1 Bg1 6.Ke4 Be3 7.Nxe3 fxe3 8.Kf3 >>e2 9.Kxe2 c5 >> -+ (-4.88) Depth: 21 01:14:56 2345830kN >> >>(blass, tel-aviv 08.09.2002) >> >>I stopped the analysis with yace. >> >>Maybe someone with better hardware or better software can find that white is >>winning. >> >>Uri
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