Author: Marc van Hal
Date: 15:49:56 06/16/03
Go up one level in this thread
On June 16, 2003 at 17:42:04, Uri Blass wrote: >On June 16, 2003 at 17:10:44, Marc van Hal wrote: > >>r4rk1/p5pp/1p1ppn2/3b4/1P1Pnq2/P4N2/1BQ1BPPP/2R2RK1 b - - 1 1 >> >>Find a clear win for Black. >>This is pointed at the diference in tactics between nulmove and normal search >>So sory John this time you are not invited. >>Or you might provide them the answer. >> >>Marc > >I do not understand what has John to do with null move pruning. > >shredder7.04(p85) can only see a clear advantage for black but not a clear win >in 15 minutes > >New game >[D]r4rk1/p5pp/1p1ppn2/3b4/1P1Pnq2/P4N2/1BQ1BPPP/2R2RK1 b - - 0 1 > >Analysis by Shredder 7.04: > >1...Rac8 2.Qxc8 Rxc8 3.Rxc8+ Ne8 > ± (0.91) Depth: 1/5 00:00:00 >1...Rac8 2.Qxc8 Rxc8 3.Rxc8+ Kf7 > ± (1.01) Depth: 1/7 00:00:00 >1...Ng4 > ² (0.28) Depth: 1/7 00:00:00 >1...Ng4 > ³ (-0.56) Depth: 1/7 00:00:00 >1...Ng4 > ³ (-0.56) Depth: 1/7 00:00:00 >1...Ng4 2.Rce1 > µ (-0.76) Depth: 2/10 00:00:00 >1...Ng4 2.Bd3 Rad8 > µ (-0.72) Depth: 3/11 00:00:00 >1...Ng4 2.Bc4 Ng5 3.g3 > µ (-0.97) Depth: 4/16 00:00:00 >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 > µ (-1.04) Depth: 4/16 00:00:00 >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 > µ (-1.04) Depth: 5/18 00:00:00 >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 > µ (-1.04) Depth: 6/18 00:00:00 26kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Be4 > µ (-1.11) Depth: 7/19 00:00:00 58kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qg4 5.hxg4 > µ (-0.86) Depth: 8/20 00:00:00 114kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qg5 > µ (-0.86) Depth: 8/20 00:00:01 158kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Be4 5.Qc7 Qd2 > µ (-0.72) Depth: 9/22 00:00:02 328kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qg5 5.Qc7 Qd2 > ³ (-0.62) Depth: 10/24 00:00:05 748kN >1...Rad8 2.Ba6 Ng4 3.h3 Ng5 4.Kh1 Bxf3 5.Qxh7+ Kxh7 > ³ (-0.63) Depth: 10/27 00:00:15 2227kN >1...Rad8 2.h3 Ng5 3.Nxg5 Qxg5 4.f3 Qg3 5.Bd3 Rf7 6.Qf2 g6 7.Qxg3 > ³ (-0.64) Depth: 10/27 00:00:16 2469kN >1...Kh8 2.Ba6 Ng4 3.h3 Ng5 4.Nxg5 Qh2# > ³ (-0.65) Depth: 10/27 00:00:28 4231kN >1...Kh8 2.h3 Ng5 3.Nxg5 Qxg5 4.f3 a5 5.bxa5 Rxa5 6.Bd3 Qe3+ 7.Kh2 Ng4+ 8.hxg4 >Qg1+ > ³ (-0.65) Depth: 10/27 00:00:30 4530kN >1...Kh8 2.Bd1 Rf7 3.Rb1 Bb7 4.Qc1 Qf5 5.Be2 Raf8 6.Nh4 > ³ (-0.63) Depth: 11/30 00:00:51 7659kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qg5 5.Kg1 Rxf3 6.Qc8+ Rxc8 > ³ (-0.64) Depth: 11/30 00:01:00 8704kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Bd3 Bxf3 6.Qc8 Raxc8 7.Bxh7+ Kxh7 > µ (-0.99) Depth: 11/30 00:01:03 9009kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Kf1 Rf6 6.Qc7 Bxf3 7.gxf3 Rf7 > µ (-1.07) Depth: 11/30 00:01:17 11035kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Kf1 Rf6 6.Qc7 Bxf3 7.Ke1 Qxg2 > µ (-1.32) Depth: 12/30 00:01:31 13103kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Qd2 Rf5 6.Qe3 Raf8 7.Kf1 R5f6 8.Rc7 >Rxf3+ 9.gxf3 Rxf3+ 10.Bxf3 > µ (-1.32) Depth: 12/34 00:01:54 16335kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Qd2 Rf6 6.Qe1 Bxf3 7.Bxf3 Raf8 > -+ (-1.50) Depth: 13/38 00:03:07 26366kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Kf1 Rf6 6.Qd3 Raf8 7.Qe3 Bxf3 8.gxf3 >Qh1+ 9.Qg1 Rxf3+ 10.Bxf3 > -+ (-1.43) Depth: 14/38 00:05:27 48195kN >1...Ng4 2.h3 Ngxf2 3.Rxf2 Nxf2 4.Kxf2 Qh2 5.Kf1 Rf6 6.Qd3 Raf8 7.Qe3 Qg3 8.Qf2 >Qg6 > µ (-1.19) Depth: 15/41 00:11:21 97158kN > >(, eim 17.06.2003) Fritz8 and Junior8 do NOT play Ng4 Infact after Ng4 h3 they only candidate Nf6 or Nh6 And evaluate the postion as equal after 3 Nxf2 And that is why I call it a nullmove problem Chessmaster does play Ng4 There for I said Jhon didn't have to join Have you actualy looked at the postion After 5 Rf6 or better 7. Qe3? If you would contineu to play this against a GM he might feel offended. Like a full piece up in a totaly save postion is not enough to win these days. But the postion is won in all postions which can arise after the knight capture on f2 and that is why I call it tactical game play not epd test postions. Marc
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