Author: Will Singleton
Date: 21:09:36 06/09/02
Go up one level in this thread
On June 09, 2002 at 17:11:30, Uri Blass wrote: >On June 09, 2002 at 17:02:09, Scott Gasch wrote: > >>On June 08, 2002 at 23:47:41, Will Singleton wrote: >> >>>4Q3/1q3ppk/2Nb4/1p4pb/2n5/2P4P/1P3PP1/R5K1 b - - >>> >> >> 1u -4.04 00:00:00.01 14 PV= f5 1. Qxh5+ [Q] Kg8 [Q] <-3.00> >> 1u +1.35 00:00:00.01 16 PV= g6 <+0.00> >> 1u +2.63 00:00:00.04 29 PV= Nxb2 <+1.00> >> 1. +2.63 00:00:00.11 60 PV= Nxb2 <+1.00> >> 2. +2.05 00:00:00.22 290 PV= Nxb2 1. Ne5 <+1.00> >> 3. +2.36 00:00:00.33 1209 PV= Nxb2 1. Ne5 Nc4 <+1.00> >> 4. +2.19 00:00:00.47 7327 PV= Nxb2 1. Ra7 Qb6 2. g4 <+1.00> >> 5. +2.25 00:00:00.65 26663 PV= Nxb2 1. Ra8 Nc4 2. Nd4 b4 <+1.00> >> 6. +1.51 00:00:01.02 92805 PV= Nxb2 1. Ra8 Qc7 2. Qh8+ Kg6 [1rep] >> > 3. Rc8 Qb6 4. g4 <+1.00> >> 7. +0.69 00:00:03.09 579394 PV= Nxb2 1. Ra8 Kh6 2. Ra7 Qb6 3. Qh8+ >> > Kg6 [1rep] 4. Ne7+ Bxe7 5. Rxe7 >> > [recap] <+1.00> >> 8u -0.23 00:00:06.01 1341561 PV= Qc7 1. Ra8 Nb6 2. Rd8 Na4 3. Qh8+ >> > Kg6 [1rep] 4. Rc8 Bh2+ 5. Kh1 >> > Qd6 <+0.00> >> 8u -0.09 00:00:07.47 1745978 PV= Nb6 1. Nd4 b4 2. Nf5 Bf4 3. cxb4 >> > Bg6 4. Qe7 Qxe7 [Q] 5. Nxe7 [Q] >> > <-1.00> >> 8u -0.03 00:00:09.07 2159150 PV= Bc5 1. Ra8 Bd1 2. Rb8 Qc7 3. h4 >> > Qf4 4. hxg5 Bxf2+ [Q] 5. Kh1 [Q] >> > Nxb2 [Q] 6. Rxb5 [Q] <+0.00> >> 8. -0.03 00:00:12.42 3025046 PV= Bc5 1. Ra8 Bd1 2. Rb8 Qc7 3. h4 >> > Qf4 4. hxg5 Bxf2+ [Q] 5. Kh1 [Q] >> > Nxb2 [Q] 6. Rxb5 [Q] <+0.00> >> 9u -0.09 00:00:22.15 5696036 PV= Nb6 1. Nd4 Bg6 2. Qxb5 f6 3. Nf5 >> > Bc7 4. Qd3 Nc4 <-1.00> >> 9u +0.00 00:00:28.12 7358611 PV= Ne5 1. Nxe5 Qe4 2. g4 Bxe5 3. Ra8 >> > Qb1+ 4. Kg2 [1rep] Qe4+ 5. Kg1 >> > [DRAW/REP] >> 9. +0.00 00:00:28.67 7495575 PV= Ne5 1. Nxe5 Qe4 2. g4 Bxe5 3. Ra8 >> > Qb1+ 4. Kg2 [1rep] Qe4+ 5. Kg1 >> > [DRAW/REP] >>10. +0.00 00:00:56.53 15154600 PV= Ne5 1. Nxe5 Qe4 2. g4 Bxe5 3. Ra8 >> > Qb1+ 4. Kg2 [1rep] Qe4+ 5. Kg1 >> > [DRAW/REP] >>11. +0.00 00:01:52.36 30695051 PV= Ne5 1. Nxe5 Qe4 2. g4 Bxe5 3. Ra8 >> > Qb1+ 4. Kg2 [1rep] Qe4+ 5. Kg1 >> > [DRAW/REP] >>12. +0.00 00:05:14.50 86217936 PV= Ne5 1. Nxe5 Qe4 2. g4 Bxe5 3. Ra8 >> > Qb1+ 4. Kg2 [1rep] Qe4+ 5. Kg1 >> > [DRAW/REP] >> >>Is the trick here to see a draw score or the queen move? > >No >The problem is mainly to see that Nxb2 is a tactical mistake. > >Some prorams simply do not see it and change their mind for a different reason >and it means that the positions is a bad test position. > >Uri Well, yes and no. One may select a different move than Nxb2 for different reasons, but the real test is to see the draw. It turns out that several moves draw, which I hadn't anticipated, but that doesn't affect the quality of the position as a test. In fact, it makes it more interesting for me. To test tactically, you can play Nxb2 and see how long to go high on g4. And the fact that several strong engines don't see the draw is very interesting. As with any position, what you take from it depends on what you bring to it. Will
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