Author: Uri Blass
Date: 16:42:23 09/17/03
Go up one level in this thread
On September 17, 2003 at 18:43:02, Jeremiah Penery wrote: >On September 17, 2003 at 10:57:15, Uri Blass wrote: > >>On September 17, 2003 at 09:13:14, Joachim Rang wrote: >> >>>Junior 8 is even more pessimistic: >>> >>>Turgut,T - Glazman,M >>>5qk1/2p2np1/4p1r1/p1NpB1Pp/1Pb1pP1P/P3P3/3Q3R/4K3 w - - 0 1 > >I also get Bxc7 here, with kind of a pointless line: > > 14-> 3:37 0.03 1. Bxc7 axb4 2. Qxb4 Qe7 3. Be5 Kh7 > 4. a4 Nd8 5. Rf2 Qf8 6. Bd4 Nc6 7. > Qb7 Ne7 > >>I do not like the move Bxc7 >> >>It let black to play e5 and to free the rook. >> >>I did not analyze the position enough to know but the question is if white can >>in some way use the fact that the black rook can move and even sacrifice more >>material to prevent the rook to move so white can win the game. >> >>In that case programs may say -1 for white for a lot of time but white >>can wi the game. >> >>Here is another position that did not happen in the game >> >>[D]r5k1/p1pp1rpp/b1n1p3/2P2q2/1P3P2/P1Q1P1P1/1B2NKB1/7R w - - 0 23 bm g4 >> >>programs like Nd4 with positive score at small depth and only after it fail low >>they can find g4. > >White(1): analyze >Analyze Mode: type "exit" to terminate. > clearing hash tables > time surplus 0.00 time limit 30.00 (3:30) > depth time score variation (1) > 1 0.01 1.22 1. Bxc6 dxc6 > 1-> 0.01 1.22 1. Bxc6 dxc6 > 2 0.01 1.22 1. Bxc6 dxc6 > 2-> 0.02 1.22 1. Bxc6 dxc6 > 3 0.02 1.13 1. Bxc6 dxc6 2. Rxh7 Bxe2 > 3 0.03 1.52 1. Rxh7 Qf6 2. Bxc6 Qxc3 3. Nxc3 dxc6 > 3-> 0.03 1.52 1. Rxh7 Qf6 2. Bxc6 Qxc3 3. Nxc3 dxc6 > 4 0.04 -- 1. Rxh7 > 4 0.04 -0.60 1. Rxh7 Qxh7 2. Bxc6 Qh2+ 3. Bg2 Bxe2 > 4 0.05 1.13 1. Bxc6 dxc6 2. Rxh7 Bxe2 > 4-> 0.05 1.13 1. Bxc6 dxc6 2. Rxh7 Bxe2 > 5 0.06 -- 1. Bxc6 > 5 0.09 -0.41 1. Bxc6 dxc6 2. b5 Bxb5 3. Rxh7 Bxe2 > 5 0.11 -0.19 1. g4 Qd3 2. Qxd3 Bxd3 3. g5 > 5-> 0.26 -0.19 1. g4 Qd3 2. Qxd3 Bxd3 3. g5 > 6 0.29 -- 1. g4 > 6 0.31 -1.35 1. g4 Qxg4 2. Bf3 Bxe2 3. Bxg4 Bxg4 > 6 0.34 -0.35 1. Bxc6 dxc6 2. Nd4 Qg4 3. Rh4 Qg6 > 4. Nxc6 > 6-> 0.55 -0.35 1. Bxc6 dxc6 2. Nd4 Qg4 3. Rh4 Qg6 > 4. Nxc6 > 7 0.67 -- 1. Bxc6 > 7 0.74 -0.90 1. Bxc6 dxc6 2. Nd4 Qe4 3. Nf3 Kf8 > 4. f5 > 7 0.84 -0.03 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bc4 > 4. Be4 e5 5. Bxc2 exd4 6. Rxh7 dxe3 > 7 1.04 0.00 1. g4 Qxg4 2. Bf3 Bxe2 3. Bxg4 Bxg4 > 4. Ke1 > 7-> 1.42 0.00 1. g4 Qxg4 2. Bf3 Bxe2 3. Bxg4 Bxg4 > 4. Ke1 > 8 1.72 -0.28 1. g4 Qxg4 2. Bf3 Qf5 3. Bxc6 dxc6 > 4. Rxh7 Bxe2 > 8 1.96 -0.03 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bc4 > 4. Be4 e5 5. Bxc2 exd4 6. Rxh7 dxe3 > 8-> 3.65 -0.03 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bc4 > 4. Be4 e5 5. Bxc2 exd4 6. Rxh7 dxe3 > 9 3.99 -0.03 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bc4 > 4. Be4 e5 5. Bxc2 exd4 6. Rxh7 dxe3 > 9-> 9.82 -0.03 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bc4 > 4. Be4 e5 5. Bxc2 exd4 6. Rxh7 dxe3 > 10 11.08 -0.29 1. Nd4 Nxd4 2. Qxd4 Qc2+ 3. Kg1 Bd3 > 4. f5 Rf6 5. Bxa8 c6 6. Qxf6 gxf6 7. > fxe6 Qxb2 8. exd7 > 10 13.30 -0.04 1. g4 Qxg4 2. Ng3 e5 3. Bxc6 exf4 4. > exf4 dxc6 5. Rxh7 Kxh7 > 10-> 23.66 -0.04 1. g4 Qxg4 2. Ng3 e5 3. Bxc6 exf4 4. > exf4 dxc6 5. Rxh7 Kxh7 > 11 41.18 0.04 1. g4 Qxg4 2. Ng3 Rb8 3. Rxh7 Ne7 4. > Be4 Kf8 5. Kg2 Ng8 6. Qe5 > 11-> 41.19 0.04 1. g4 Qxg4 2. Ng3 Rb8 3. Rxh7 Ne7 4. > Be4 Kf8 5. Kg2 Ng8 6. Qe5 > 12 1:11 -0.08 1. g4 Qxg4 2. Ng3 e5 3. Bf3 Qe6 4. > Rxh7 Kxh7 5. Qc2+ Kg8 6. Bxc6 Bc4 7. > Bxa8 exf4 > 12 2:28 -0.02 1. Bxc6 dxc6 2. Nd4 Qe4 3. Rh4 Rf6 > 4. Qb3 h6 5. Nf3 Bc4 6. Nd2 Bxb3 7. > Nxe4 > >After forcing Bxc6 dxc6, I get this: > >13-> 2:20 -0.01 2. Nd4 Qe4 3. Rh4 Rd8 4. Nf3 Rf6 5. > Ng5 Qb1 6. Kg2 h6 7. Rh1 Rd1 8. Rh4 > >Forcing g4 Qxg4, this: > >12-> 7:25 -0.09 2. Ng3 e5 3. Bd5 Nd4 4. Rh5 Rf8 5. > Rxe5 Ne6 6. Rh5 Rf6 7. Bxe6+ Qxe6 8. > Kf3 > >I don't really know what it's seeing here. > >This is modified Crafty 19.3(?) with MPC, futility, and a bunch of other stuff I >added over time, since 18.15. After 1.g4 Qxg4 the right line is probably 2.Bf3 Qf5 3.Ng3 when white is better based on the analysis Uri
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