Author: Uri Blass
Date: 04:23:31 05/18/05
Go up one level in this thread
On May 18, 2005 at 03:24:42, Jeremiah Penery wrote: >On May 17, 2005 at 22:31:25, Eelco de Groot wrote: > >>Pro Deo 1.1 Q5T about Nolot #3, keymove is supposed to be Nxg5, most programs >>eventually play Bxg5. So does the Q5T, but only with +0.36 >>[D]r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w KQkq - bm Nxg5; id >>"Position 3"; >> >... >> 00:00:21 11.00 0.54 1.Qc2 Bxf3 2.gxf3 Nxf3 3.Kd1 Qd7 4.Nh5 O-O-O >> 5.Nxg7 Rdg8 6.Nxe6 Ncxe5 >> 00:01:02 12.00 0.46 1.Qc2 Bxf3 2.gxf3 Nxf3 3.Kd1 Qd7 4.Rf1 Nfxd4 >> 5.cxd4 Nxd4 6.Qc3 c5 7.Ne2 Nxe2 8.Kxe2 O-O-O >> 9.Rf7 >> 00:01:12 12.01 0.58 1.Bxg5 Bxg5 2.O-O Qe7 3.h3 >> 00:04:15 13.00 0.36 1.Bxg5 Bxg5 2.h3 Bh4 3.hxg4 Bxg3 4.Kf1 Qd7 >> 5.Rh3 >> >>Vulcan Q1 does not find either Bxg5 or Nxg5 with a high score, with a slightly >>different positional evauation for mobility etc., it thinks h3 is best. This >>Nolot #3 position is still not "solved" >>(See also http://www.seanet.com/~brucemo/nolot/nolot.htm). >> >... >> 00:00:40 11.10 0.60 1.Rf1 g6 2.Bxg5 Bxg5 3.Qc2 Qe7 4.Nxg5 Qxg5 >> 5.Qd2 Qxd2 >> 00:01:09 12.00 0.32 1.Rf1 Nxf3 2.gxf3 Bh3 3.Rg1 Bh4 4.Kd2 a5 5.Kc2 >> Ne7 6.Nh5 >> 00:01:18 12.01 0.57 1.h3 Bxf3 2.gxf3 g6 3.f4 Nf7 4.Rg1 Rf8 5.Qb3 >> Na5 >> 00:02:12 13.00 0.70 1.h3 Bxf3 2.gxf3 g6 3.f4 Nf7 4.Rg1 Bh4 5.b3 >> Nh6 6.Ba3 Be7 7.Bxe7 >> 00:04:28 14.00 0.73 1.h3 Bxf3 2.gxf3 g6 3.f4 Nf7 4.Rg1 Rf8 5.f5 >> 00:12:18 15.00 0.64 1.h3 Bxf3 2.gxf3 > >I've studied the Nolot positions a lot, and I'm quite sure that position #3 is >correct with Nxg5. White has a crushing attack, and most of black's pieces are >paralyzed. > >This is output from a modified Crafty 19.19, with some form of singular >extensions among other things: > >White(1): analyze >Analyze Mode: type "exit" to terminate. > clearing hash tables > time surplus 0.00 time limit 22.50 (3:30) > depth time score variation (1) > ... > 11 15.76 0.14 1. Be3 O-O 2. Bxg5 Bxg5 3. Qc2 h6 4. > Bh7+ Kh8 5. Nxg5 Qxg5 6. Rf1 Rxf1+ > 7. Nxf1 > 11 20.06 0.20 1. Bxg5 Bxg5(S) 2. Rf1(H) Qe7(H) 3. > Qa4(H) Bf4(H) 4. Ne2(H) Be3(H) 5. h3(H) > Bh5(H) 6. Qd1(H) <HT> > 11-> 23.59 0.20 1. Bxg5 Bxg5(S) 2. Rf1 Qe7 3. Qa4 Bf4 > 4. Ne2 Be3 5. h3 Bh5 6. Qd1 <HT> > 12 31.70 0.03 1. Bxg5 Bxg5(S) 2. Rf1 Qe7 3. Qa4 O-O-O > 4. Bb5 Nb8 5. Nxg5 Qxg5 6. Qxa7 Rhf8 > 12 1:03 0.08 1. Be3 g6 2. Bb5 Ne4 3. Qa4 Qd7 4. > Nxe4 dxe4 5. Ng5 O-O-O 6. O-O Bf5 7. > Bxc6 Qxc6 8. Qxa7 > 12 1:23 0.41 1. Nxg5 Bxd1(S) 2. Nxe6(H) Qb8(H) 3. > Nxg7+(H) Kf7(H) 4. Bh6(H) Bf8(H) 5. > Rf1+(H) Kg8(H) 6. N3f5(H) Bg4(H) 7. > e6(H) <HT> > 12-> 1:31 0.41 1. Nxg5 Bxd1(S) 2. Nxe6 Qb8 3. Nxg7+ > Kf7(S) 4. Bh6 Bf8 5. Rf1+ Kg8 6. N3f5 > Bg4 7. e6 <HT> > 13 2:05 0.70 1. Nxg5 Bxd1(S) 2. Nxe6 Qc8(S) 3. Nxg7+ > Kf7(S) 4. O-O+(H) Kxg7(H) 5. Nf5+(H) > Qxf5(H) 6. Bxf5(H) Bh5(H) 7. b4(H) > Bg6(H) 8. Bg4(H) <HT> > 13-> 2:32 0.70 1. Nxg5 Bxd1(S) 2. Nxe6 Qc8(S) 3. Nxg7+ > Kf7(S) 4. O-O+ Kxg7(S) 5. Nf5+ Qxf5 > 6. Bxf5 Bh5 7. b4 Bg6 8. Bg4 <HT> > >The score continues to rise at higher iterations. > > 17-> 27:17 1.24 1. Nxg5 Bxd1 2. Nxe6 Qb8(S) 3. Nxg7+ > Kf7 4. N7f5 Ba4 5. O-O Ke8 6. b3(S) > Bxb3 7. axb3 <HT> I tried Movei in the position after 1.Nxg5 and I get only a draw score at depth 17 but the pv seems to be good for white. I could prove +1.7 for white with yaceafter Bxd1 Nxe6 Qb8 Nxg7+ Kf8 Bh6 Bg4 0-0+ Kg8 Rf4 When I go back and let yace to learn it seems that Bg4 is not good and Ba4 is better but yace still report a significant advantage for white(1.39 pawns for white for Ba4) When I continue to go back Yace see only a draw for Crafty's move Kf7 but more invistigation discovers 4.Bh6 Bf8 5.0-0+ Kg8 6.Rxf8+ Qxf8 7.Rxd1 with +2.08 for white so I go backward Yace prefers 4...Ba4 but again it is a big advantage for white when going backward it suggests 4...b5 with 1.48 for white but again it does not seem to be a good move so it seems that both Kf8 and Kf7 are bad and the black king needs to go to the d file. 3...Kd8 is evaluated by yace as 0.54/12 for white When I go backward yace suggest Qc8 and it seems that I need to repeat all the process for Qc8 to get positive score for white with yace. Analysis by Movei setboard r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w KQkq - force f3g5 analyze 1 513 0 12 g4d1 g5e6 2 513 0 61 g4d1 g5e6 2 513 0 133 g4d1 g5e6 3 483 0 225 g4d1 3 413 0 333 g4d1 3 379 0 595 g4d1 g5e6 d8c8 e6g7 e8f7 e1d1 f7g7 3 379 0 1391 g4d1 g5e6 d8c8 e6g7 e8f7 e1d1 f7g7 4 409 0 1766 g4d1 4 421 1 2118 g4d1 g5e6 d8c8 e6c7 c8c7 e1d1 4 421 1 3040 g4d1 g5e6 d8c8 e6c7 c8c7 e1d1 5 391 1 3578 g4d1 5 365 1 5079 g4d1 g5e6 d8d7 e6g7 e8d8 e1g1 5 365 1 6180 g4d1 g5e6 d8d7 e6g7 e8d8 e1g1 6 335 1 8378 g4d1 6 265 3 10711 g4d1 6 145 4 19412 g4d1 g5e6 d8d7 d3f5 e7h4 e1d1 h4g3 h2g3 6 145 6 23806 g4d1 g5e6 d8d7 d3f5 e7h4 e1d1 h4g3 h2g3 7 145 6 30479 g4d1 g5e6 d8d7 d3f5 e7h4 e1d1 h4g3 h2g3 7 145 7 38226 g4d1 g5e6 d8d7 d3f5 e7h4 e1d1 h4g3 h2g3 8 115 14 61123 g4d1 8 66 20 100389 g4d1 g5e6 d8b8 e1d1 e8f7 e6g5 f7g8 h1f1 b8e8 8 66 26 128964 g4d1 g5e6 d8b8 e1d1 e8f7 e6g5 f7g8 h1f1 b8e8 9 96 42 219722 g4d1 9 115 54 283952 g4d1 g5e6 d8b8 e1d1 g7g6 h1f1 b8c8 e6g7 e8d8 d1c2 9 115 65 340756 g4d1 g5e6 d8b8 e1d1 g7g6 h1f1 b8c8 e6g7 e8d8 d1c2 10 85 76 392779 g4d1 10 121 104 543444 g4d1 g5e6 d8b8 e1d1 g7g6 h1f1 b8c8 e6g7 e8d8 c1h6 c8g4 d1c1 10 121 128 667219 g4d1 g5e6 d8b8 e1d1 g7g6 h1f1 b8c8 e6g7 e8d8 c1h6 c8g4 d1c1 11 106 179 944356 g4d1 g5e6 d8b8 e1d1 g7g6 c1d2 b8c8 e6f4 c8g4 d1c2 e8c8 c2b1 11 106 262 1345092 g4d1 g5e6 d8b8 e1d1 g7g6 c1d2 b8c8 e6f4 c8g4 d1c2 e8c8 c2b1 12 91 431 2213225 g4d1 g5e6 d8c8 e6g7 e8f7 e1g1 f7g7 g3f5 c8f5 d3f5 d1e2 f1e1 a 8f8 f5e6 e2c4 c1e3 12 91 717 3596445 g4d1 g5e6 d8c8 e6g7 e8f7 e1g1 f7g7 g3f5 c8f5 d3f5 d1e2 f1e1 a 8f8 f5e6 e2c4 c1e3 13 82 1181 5907680 g4d1 g5e6 d8c8 e6g7 e8f7 e1g1 f7g7 g3f5 c8f5 d3f5 d1e2 f1e1 a8f8 f5h7 g7h7 e1e2 h7g6 c1e3 13 82 1867 9115453 g4d1 g5e6 d8c8 e6g7 e8f7 e1g1 f7g7 g3f5 c8f5 d3f5 d1e2 f1e1 a8f8 f5h7 g7h7 e1e2 h7g6 c1e3 14 78 3170 16044569 g4d1 g5e6 d8b8 e1d1 g7g6 d3e2 c6d8 e6g7 e8f7 c1h6 h8f8 d1c2 f7g8 h1f1 d8f7 14 78 4542 22980311 g4d1 g5e6 d8b8 e1d1 g7g6 d3e2 c6d8 e6g7 e8f7 c1h6 h8f8 d1c2 f7g8 h1f1 d8f7 15 108 14325 72837629 g4d1 15 104 18589 95580330 g4d1 g5e6 d8b8 e1d1 g7g6 c1h6 b8c8 e6g7 e8d8 d1c2 c8d7 a1 f1 e7f8 e5e6 d7e7 f1f7 15 104 20410 104215821 g4d1 g5e6 d8b8 e1d1 g7g6 c1h6 b8c8 e6g7 e8d8 d1c2 c8d7 a 1f1 e7f8 e5e6 d7e7 f1f7 16 81 33128 168047823 g4d1 g5e6 d8b8 e1d1 g7g6 c1h6 b8c8 e6g7 e8f7 h1f1 f7g8 g7 f5 e7f8 h6f8 c8f8 f5e3 f8h6 e3d5 h6h2 d5f6 g8g7 16 81 44426 220058732 g4d1 g5e6 d8b8 e1d1 g7g6 c1h6 b8c8 e6g7 e8f7 h1f1 f7g8 g7 f5 e7f8 h6f8 c8f8 f5e3 f8h6 e3d5 h6h2 d5f6 g8g7 17 51 77562 378718624 g4d1 17 0 135701 664998094 g4d1 g5e6 d8b8 e6g7 e8f8 c1h6 d1g4 e1g1 f8g8 f1f4 g4c8 g7 f5 c8f5 d3f5 g8f7 f5d7 f7g6 f4g4 g6h6 g3f5 h6h5 f5g7 h5h6 g7f5 17 0 177443 868179579 g4d1 g5e6 d8b8 e6g7 e8f8 c1h6 d1g4 e1g1 f8g8 f1f4 g4c8 g7 f5 c8f5 d3f5 g8f7 f5d7 f7g6 f4g4 g6h6 g3f5 h6h5 f5g7 h5h6 g7f5
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