Author: John Merlino
Date: 16:37:57 07/09/04
Go up one level in this thread
On July 09, 2004 at 13:04:28, Daniel Jackson wrote: >On July 09, 2004 at 12:58:53, John Merlino wrote: > >>On July 09, 2004 at 10:11:52, Anthony Cozzie wrote: >> >>>On July 09, 2004 at 09:37:20, Daniel Jackson wrote: >>> >>>>The Uzbekistani GM was low on time and had played a very incautious move (Rd6). >>>>After checking the lines for a few minutes Adams struck out: 31.Rxb4! axb4 >>>>32.Ne7+ Qxe7 33.Qxd6. Now instead of defending the b-pawn (with 33...Qxd6 >>>>34.Rxd6 Rb8 or even 33...Qe4) Kasimdzhanov went for 22...Qe2 after which Adams >>>>could pick up the second pawn with 34.Rd4 h5 35.Qxb4. Everone expected Black to >>>>resign, but Kasimdzhanov fought on desperately until the time control and a few >>>>moves after that. 35...Qf3 36.h4 Rc8 37.Qd2 Rc3 38.Rf4 Qc6 39.Kh2 Rxb3 40.Qd8+ >>>>Kh7 41.Qd1 Rb7 42.Qxh5+ Kg8 43.Rd4 Qf6 44.Rd2 Ra7 45.a5 g6 46.Qb5 Kh7 47.Qb6 >>>>1-0. >>>> >>>>A resulting position had Kasimdzhanov exchanged Queens and played 34..Rb8. >>>> >>>>The play that would have ensued, 35.Rd5!..Kf8. Does your engine find (36.Rb5!!)? >>>> >>>>[D]1r3k2/5ppp/8/3R4/Pp6/1P4P1/5P1P/6K1 w - - 0 36 >>>> >>>>Daniel >>> >>>It looks like Black will be in zugzwang after Rb5 Rxb5 axb5 Ke7 Kf1 Kd6 Ke2 Kc5 >>>Kd3 Kxb5 Kd4, but it depends who gets the move after the pawn pushes on the >>>kingside. >>> >>>I would play Rd7 in blitz and expect to win easily. White would win the b-pawn >>>long before black could extricate his king. >>> >>>anthony >> >>CM9_SKR agrees with you about Rd7, although it takes almost 2 1/2 minutes on an >>AMD 2500: >> >>Time Depth Score Positions Moves >>0:00 2/3 1.95 312 36.Rb5 Ra8 37.Rxb4 >>0:00 2/4 1.91 1411 36.Rb5 Rd8 37.Rxb4 Ke7 >>0:00 2/5 1.98 4522 36.Rb5 Rd8 37.Rxb4 Ke7 38.Rb5 >>0:00 3/6 0.27 12994 36.Rb5 Rxb5 37.axb5 Ke7 38.h4 Kd6 >> 39.h5 Kc5 40.h6 gxh6 >>0:00 3/6 1.86 20184 36.Rh5 Rc8 37.Rh4 Ke7 38.Kg2 Kd6 >> 39.Rxb4 >>0:00 3/7 1.93 51028 36.Rh5 Rd8 37.Rh4 Ke7 38.Rxb4 Ke6 >> 39.Rb5 >>0:00 3/8 1.54 90380 36.Rh5 h6 37.Kg2 Rd8 38.Rb5 Rd4 >> 39.Rb8+ Ke7 40.f3 >>0:00 3/8 1.70 110020 36.f4 Re8 37.Rb5 Re4 38.Kf2 h6 >> 39.Kf3 Rd4 >>0:00 4/9 1.63 271940 36.f4 h6 37.Kg2 Re8 38.Rb5 Re2+ >> 39.Kh3 Re4 40.Rb8+ Ke7 41.a5 >>0:03 5/10 1.36 1020602 36.f4 Ke7 37.Kf2 Rb6 38.Rg5 g6 >> 39.Rd5 Rc6 40.Rb5 Rc2+ 41.Ke3 >>0:04 5/10 1.44 1289384 36.Kg2 Ke7 37.Rh5 h6 38.f3 Rc8 >> 39.Rb5 Rc2+ 40.Kh3 Rc3 41.Rxb4 Rxf3 >>0:04 5/10 1.51 1364346 36.Rh5 h6 37.Re5 Rd8 38.Rb5 Rd4 >> 39.f4 Ke7 40.Rb7+ Ke8 41.a5 >>0:05 5/10 1.66 1854064 36.Re5 Rb7 37.Kf1 Rd7 38.Rb5 Rd4 >> 39.Ke2 Ke7 40.Ke3 Rg4 >>0:07 6/11 1.59 2436795 36.Re5 Rb7 37.f4 g6 38.Kf2 Rd7 >> 39.Rb5 Rd2+ 40.Ke3 Rxh2 41.Rxb4 Ra2 >>0:15 7/12 1.51 5242192 36.Re5 h6 37.f4 f6 38.Rc5 Ke7 39.Rc7+ >> Kf8 40.Kf2 Rb6 41.Ke3 Ra6 42.f5 >>0:41 8/13 1.50 14032118 36.Re5 Rb7 37.Kg2 f6 38.Re4 g6 >> 39.g4 Kf7 40.Kf3 f5 41.gxf5 gxf5 >> 42.Re5 Kf6 >>1:24 9/14 1.49 29730338 36.Re5 Rb7 37.f4 f6 38.Re4 g6 39.g4 >> Kf7 40.Kf2 f5 41.gxf5 gxf5 42.Re5 >> Kf6 43.Re8 >>2:25 9/14 1.56 51224560 36.Rd7 Rb6 37.Rc7 g6 38.Kf1 h5 >> 39.Ke2 Ke8 40.Kd3 Rf6 41.Kc4 Rxf2 >> 42.Kxb4 Rxh2 >> >>jm > >This does not surprise me. > >Play Rb5 for CM and see the result. > >Daniel I did, and because the exchange of rooks is forced, it can see much deeper in a much shorter amount of time. After forcing 36.Rb5 Rxb5 37.axb5, it takes just under one minute (on an AMD 2500) to get an eval higher than the above. jm
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