Author: Uri Blass
Date: 04:55:38 01/04/03
Go up one level in this thread
On January 04, 2003 at 07:25:23, Uri Blass wrote: >On January 04, 2003 at 06:24:15, Sune Fischer wrote: > >>On January 04, 2003 at 06:01:45, Kurt Utzinger wrote: >> >>>Hi Sune >>>This position is an easy win for white who threatens 1.Qc8 +- and against this >>>deadly threat black's only move is 1...Qa8+ but it does not help as can be seen >>>from the following analysis of Shredder7 and Fritz8005 on P4 1.8/32 MB hash >> >>Hi, >> >>No I don't think it is that simple, black can do some damage before the pawn >>promotes. Most programs can find Qc8 with a +9 score if there is no other >>tactics, even mine :) >> >> >>>Utzinger,K - Shredder 7 >>>3q4/3P2kp/5p2/p7/1p1R2P1/8/2Q2PK1/4r3 b - - 0 1 >>> >>>Analysis by Shredder 7: >> >>>1...Qa8+ 2.f3 Qd8 3.Kf2 b3 4.Qc3 Re5 5.Qc8 Qe7 6.d8B Qe6 >>> +- (5.89) Depth: 10/35 00:00:40 10657kN >>> +- (4.39) Depth: 12/39 00:03:19 54725kN >>> >>>(Utzinger, MyTown 04.01.2003) >>>************************************************************************************ >>>Utzinger,K - Fritz 8 >>>3q4/3P2kp/5p2/p7/1p1R2P1/8/2Q2PK1/4r3 b - - 0 1 >>> >>>Analysis by Fritz 8: >> >>>1...Qa8+-- >>> +- (4.37) Depth: 9/35 00:00:03 2570kN >>> +- (3.22) Depth: 14/45 00:01:54 82279kN >>> >>>(Utzinger, MyTown 04.01.2003) >> >>Interesting that the score drops going even deeper. >> >>Crafty takes a long time here: >>12 197 20426 104027337 1. ... Qa8+ 2. f3 Qd8 3. Rd2 Kf8 4. Qxh7 Re5 5. Rd6 >>Rg5 6. Qh8+ Rg8 7. Qxf6+ Qxf6 8. Rxf6+ Ke7 >>13 345 59922 328433020 1. ... Qa8+ 2. f3 Qd8 3. Rd2 Qb6 4. d8=Q Re2+ 5. >>Rxe2 Qxd8 6. Rd2 Qe7 7. Qf5 Qe5 8. Rd7+ Kh6 9. Rxh7# >> >>S. > >Crafty finds the right line. > >There is a trap here > >1...Qa8+ 2.f3 Qd8 3.Qc8? Qe7 >and suddeenly movei can fail a low to a draw score. > >Movei needs some minutes to avoid 3.Qc8 at depth 11 >I do not know if this trap could impress thinker. > >Uri It seems that there are more traps here but it seems that Rd2 is enough to win Here is Deep Fritz6's opinion on p850: New position [D]3q4/3P2kp/5p2/p7/1p1R2P1/5P2/2Q3K1/4r3 w - - 0 1 Analysis by Deep Fritz: 3.Qxh7+-- -+ (-6.41) Depth: 1/3 00:00:00 3.Qxh7+-- Kxh7 -+ (-9.06) Depth: 1/3 00:00:00 3.Rxb4! -+ (-7.59) Depth: 1/3 00:00:00 3.Rxb4! axb4 -+ (-4.50) Depth: 1/3 00:00:00 3.g5! -+ (-3.72) Depth: 1/3 00:00:00 3.g5! fxg5 -+ (-2.25) Depth: 1/3 00:00:00 3.Qf5! -+ (-2.19) Depth: 1/4 00:00:00 3.Qf5! Re2+ 4.Kh1 µ (-1.06) Depth: 1/4 00:00:00 3.Qf5 Re2+ 4.Kh1 µ (-1.06) Depth: 2/6 00:00:00 3.Qf5 Re5 4.Qd3 µ (-1.16) Depth: 3/8 00:00:00 3.Qc8! µ (-1.12) Depth: 3/9 00:00:00 3.Qc8! Rg1+ 4.Kf2 Rg2+ 5.Kxg2 +- (4.00) Depth: 3/12 00:00:00 1kN 3.Qc8 Re2+ 4.Kf1 Rf2+ 5.Kxf2 +- (4.19) Depth: 4/11 00:00:00 2kN 3.Qc8! +- (4.50) Depth: 5/14 00:00:00 6kN 3.Qc8! Qe7 4.d8Q Qe2+ 5.Kg3 Rg1+ 6.Kh3 Qxf3+ 7.Kh2 +- (5.69) Depth: 5/16 00:00:00 13kN 3.Qc8-- +- (5.38) Depth: 6/16 00:00:00 16kN 3.Qc8-- Qe7 4.Re4 Rxe4 5.d8Q Qxd8 6.Qxd8 ± (1.31) Depth: 6/20 00:00:00 33kN 3.Qc8 Qe7 4.Re4 Rxe4 5.d8Q Qxd8 6.Qxd8 Re2+ 7.Kg3 ± (1.31) Depth: 7/19 00:00:00 62kN 3.Kf2! ± (1.34) Depth: 7/19 00:00:00 91kN 3.Kf2 b3 4.Qc8 Qe7 5.Re4 Rxe4 6.d8Q Re2+ 7.Kg3 Qxd8 ± (1.13) Depth: 8/19 00:00:00 358kN 3.Qc8! ± (1.16) Depth: 8/19 00:00:00 377kN 3.Qc8! Qe7 4.Re4 Rxe4 5.d8Q Re2+ 6.Kh3 Qxd8 7.Qxd8 ± (1.22) Depth: 8/23 00:00:00 408kN 3.g5! ± (1.25) Depth: 8/23 00:00:00 617kN 3.g5! fxg5 4.Kf2 Rh1 5.Qc8 Qe7 6.Kg2 Qe2+ 7.Kxh1 Qxf3+ 8.Kg1 +- (1.59) Depth: 8/23 00:00:01 756kN 3.g5! +- (1.91) Depth: 9/24 00:00:01 1383kN 3.g5! fxg5 4.Kf2 b3 5.Qc3 Re5 6.Rd5 a4 +- (1.94) Depth: 9/25 00:00:02 1800kN 3.Rd2! +- (1.97) Depth: 9/26 00:00:04 3148kN 3.Rd2! Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Kf2 +- (2.34) Depth: 9/26 00:00:04 3673kN 3.Rd2! +- (2.66) Depth: 10/26 00:00:05 3966kN 3.Rd2! Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Qc5 b3 7.Rb2 Qd3 8.Qxa5 +- (3.22) Depth: 10/27 00:00:05 4322kN 3.Rd2-- +- (2.91) Depth: 11/28 00:00:06 5016kN 3.Rd2-- Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Qc5 f5 7.Re7+ Kg8 8.gxf5 h5 +- (2.81) Depth: 11/30 00:00:07 5729kN 3.Rd2! +- (3.13) Depth: 12/29 00:00:11 8724kN 3.Rd2! Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Rd2 b3 7.Rxd8 bxc2 8.Rc8 h5 +- (3.28) Depth: 12/31 00:00:13 10356kN 3.Rd2 Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Rd2 Qe8 +- (3.50) Depth: 13/34 00:00:26 20205kN 3.Kf2! +- (3.53) Depth: 13/34 00:00:50 38339kN 3.Kf2! b3 4.Qc3 Rh1 5.Qc8 Qe7 6.Qe8 Qe5 7.Qxe5 fxe5 8.d8Q exd4 +- (4.06) Depth: 13/34 00:01:03 48006kN 3.Kf2-- +- (3.75) Depth: 14/35 00:01:17 58842kN 3.Kf2-- b3 4.Qc3 Re5 5.g5 b2 6.gxf6+ Kf7 7.Qxb2 Ke6 8.f7 Kxf7 +- (1.44) Depth: 14/36 00:01:52 84634kN 3.Kg3! +- (1.47) Depth: 14/36 00:03:33 160761kN, tb=2 3.Kg3! Qb8+ 4.f4 Qd8 5.g5 fxg5 6.Kf2 Ra1 7.Qb2 Rh1 8.Rd1+ Kg8 +- (2.06) Depth: 14/40 00:06:54 312470kN, tb=3 3.Rd2! +- (2.09) Depth: 14/40 00:07:19 330736kN, tb=3 3.Rd2! Qb6 4.d8Q Re2+ 5.Rxe2 Qxd8 6.Rd2 Qe8 +- (3.63) Depth: 14/40 00:08:04 363488kN, tb=3 (blass, tel-aviv 04.01.2003) Uri
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