Author: Uri Blass
Date: 00:27:06 12/26/01
Shredder5.32 evaluated it's position as 0.86 pawns against itself Tiger played 42...Ra7 and suddenly Shredder changed it's evaluation to 0.36 pawns for itself and won the game. Shredder is a pawn down on the board and I was interested to know Gambit2's opinion so I gave it to analyze the position for a lot of hours(without most of the 5 piece tablebases with p800 and 48 mbytes) Gambittiger admitted that Shredder was right when it expected Nf6 but does not agree with shredder about the evaluation and believes that white is sligthly better even after 42...Nf6. I give also all the game that was copied by Junior's interface Shredder 5.32 A1200 - Gambit Tiger 2 CP A1200 [D]8/3n1pkp/4p1p1/1RP5/8/1PK5/r2N2P1/8 b - - 0 1 Analysis by Gambit Tiger 2.0: 42...Nf6 43.Kd3 Nd5 44.g3 Kf8 45.Rb8+ Ke7 46.Rb7+ Ke8 47.c6 ³ (-0.28) Depth: 8 00:00:00 94kN 42...Nf6 43.Kd3 Nd5 44.g3 h5 45.Rb7 Kf8 46.c6 Ke8 ³ (-0.30) Depth: 9 00:00:00 144kN 42...Nf6 43.Nc4 Nd5+ 44.Kd4 Ne7 45.Rb6 Nf5+ 46.Kd3 Rxg2 47.c6 Rg3+ 48.Ke4 Kf6 = (-0.21) Depth: 10 00:00:01 383kN 42...Nf6 43.Nc4 Nd5+ 44.Kd4 Ne7 45.Rb6 Rxg2 46.c6 Rg4+ 47.Kd3 Nd5 48.Rb7 Kf6 = (-0.20) Depth: 11 00:00:05 1167kN 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.b8Q+ Kxb8 ² (0.58) Depth: 12 00:00:25 5885kN 42...Ne5 43.Rb6 = (0.00) Depth: 12 00:00:33 7520kN 42...Ra7 43.Kd4 Rc7 44.b4 e5+ 45.Kd5 Nxc5 46.bxc5 Rd7+ 47.Kxe5 Rxd2 48.c6 f6+ 49.Ke6 Re2+ 50.Kd6 Rxg2 = (-0.19) Depth: 12 00:00:38 8763kN 42...Ra7 43.Kd4 Rc7 44.b4 Kf6 45.Ne4+ Ke7 46.Ra5 f6 47.Nd6 Rc6 48.Ra7 h5 49.g3 = (-0.06) Depth: 13 00:00:46 10605kN 42...Ra7 43.Kd4 Rc7 44.Nc4 Kf6 45.b4 Ke7 = (0.10) Depth: 14 00:01:18 18070kN 42...Ra7 43.Kd4 Rc7 44.Nc4 Kf6 45.b4 Ke7 46.Ra5 Nf6 47.Nd6 Ne8 48.Nxe8 Kxe8 49.b5 Rd7+ 50.Kc4 Ke7 = (0.10) Depth: 15 00:02:43 37717kN 42...Ra7 43.b4 Kf6 44.Nc4 Rc7 45.Kd4 Ke7 = (0.18) Depth: 16 00:09:16 128739kN, tb=3 42...Ra7 43.b4 Kf6 44.Nc4 Rc7 45.Nd6 Ke5 46.Kc4 Nf6 47.Rb7 Rxb7 48.Nxb7 Ne4 49.c6 Nd6+ 50.Nxd6 Kxd6 51.b5 f6 ± (0.72) Depth: 17 00:21:29 297315kN, tb=3 42...Ne5 43.Rb7 Ra1 44.Nc4 Kf6 45.Nxe5 Kxe5 46.Rxf7 h5 47.b4 Rc1+ 48.Kb3 Kd5 49.Rd7+ Ke4 50.Rd6 Ke5 51.g3 g5 ² (0.54) Depth: 17 00:39:07 535369kN, tb=3 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.Kxa3 Kxb7 52.Nf3 ² (0.36) Depth: 17 00:47:33 652960kN, tb=3 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.Kxa3 Kxb7 52.Nf3 ² (0.36) Depth: 18 01:06:02 909806kN, tb=17 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.Kxa3 Kxb7 52.Nf3 ² (0.32) Depth: 19 02:04:50 1717299kN, tb=62 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.Kxa3 Kxb7 52.Nf3 ² (0.32) Depth: 20 04:10:11 3449106kN, tb=544 42...Nf6 43.c6 Nd5+ 44.Rxd5 exd5 45.b4 Kf6 46.c7 Ra8 47.b5 Ke6 48.b6 Kd6 49.b7 Ra3+ 50.Kb2 Kxc7 51.Kxa3 Kxb7 52.Nf3 ² (0.26) Depth: 21 10:55:25 9036958kN, tb=2967 (Blass, Tel-aviv 26.12.2001) Shredder 5.32 A1200 - Gambit Tiger 2 CP A1200 [B04] 120'/40+60'/20+60'20 SSDF (23), 18.09.2001 [Tony Hedlund] 192MB, shredder.ctg. A1200 1.e4 0 1...Nf6 0 2.e5 0 2...Nd5 0 3.d4 0 3...d6 0 4.Nf3 0 4...g6 0 5.Bc4 0 5...Nb6 0 6.Bb3 0 6...Bg7 0 7.Ng5 0 7...e6 0 8.Qf3 0 8...Qe7 0 9.Ne4 0 9...dxe5 0 10.Bg5 0 10...Qb4+ 0 11.c3 0 11...Qa5 0 12.Bf6 0 12...Bxf6 0 13.Qxf6 0 13...0-0 0 14.Qxe5 0 14...Qxe5 (Sc6) 0 15.dxe5 0 15...Nc6 0 16.f4 0 16...Na5 0 17.Nbd2 0 17...Nxb3 0 18.axb3 0 18...Nd5 0 19.0-0 0 19...Rd8 0 20.c4 0 20...Nb4 sista bokdraget 0 21.Nf6+ 300kN/s 0.59/16 333 21...Kg7 298 22.Nde4 304kN/s 0.58/16 0 22...b6 418 23.Rfd1 303kN/s 0.55/16 212 23...Bb7 (La6) 352 24.Rxd8 323kN/s 0.95/17 619 24...Rxd8 0 25.Rxa7 350kN/s 0.85/18 495 25...Bxe4 (Td1+) 337 26.Nxe4 361kN/s 1.12/16 73 26...Rd4 (Td1+) 431 27.Nc3 338kN/s 1.08/17 397 27...Rxf4 (Td7) 55 28.Rxc7 340kN/s 0.78/18 708 28...Nc2 0 29.Ne2 345kN/s 0.64/17 595 29...Re4 409 30.Kf2 345kN/s 0.28/18 42 30...Rxe5 833 31.Rb7 339kN/s 0.24/18 0 31...Rf5+ 1064 32.Kg1 335kN/s 0.00/19 0 32...Ne3 459 33.Ng3 347kN/s -0.07/20 332 33...Ra5 102 34.Ne4 351kN/s -0.07/18 169 34...Ng4 153 35.Kf1 338kN/s 0.00/18 445 35...Nxh2+ 122 36.Ke2 359kN/s 0.00/18 206 36...Ra2 1084 37.Kd3 347kN/s 0.00/19 0 37...Rxb2 421 38.Nd2 352kN/s -0.03/18 170 38...Ng4 305 39.Rxb6 341kN/s -0.09/17 364 39...Ra2 (e5) 0 40.c5 348kN/s -0.23/16 674 40...Ne5+ 0 41.Kc3 355kN/s -0.46/16 384 41...Nd7 675 42.Rb5 352kN/s -0.86/18 0 42...Ra7 (Sf6) 241 43.b4 364kN/s 0.36/16 371 43...Rc7 (h5) 1033 44.Nc4 357kN/s 0.64/17 415 44...Kf6 156 45.Kd4 345kN/s 0.52/18 63 45...h5 (Ke7) 488 46.Ra5 324kN/s 0.55/18 391 46...Ke7 0 47.Ra6 322kN/s 0.56/17 498 47...Nb8 1419 48.Ra8 338kN/s 0.95/20 0 48...Nc6+ 172 49.Kc3 339kN/s 0.81/19 334 49...Nd8 (Kf6) 0 50.Ne5 356kN/s 0.95/16 185 50...Nb7 0 51.Kd4 332kN/s 1.65/17 301 51...f6 (g5) 114 52.Nxg6+ 325kN/s 2.08/14 24 52...Kf7 197 53.Nh4 242kN/s 2.19/17 75 53...Ke7 485 54.g3 217kN/s 2.32/16 61 54...Rd7+ (e5+) 562 55.Kc4 243kN/s 2.58/16 421 55...Rd2 0 56.Kb5 243kN/s 2.99/15 224 56...Nd8 436 57.c6 241kN/s 3.09/17 31 57...Rd5+ (Sxc6) 71 58.Kb6 201kN/s 3.16/18 298 58...Nxc6 0 59.Kxc6 172kN/s 3.17/18 286 59...Rd6+ 1 60.Kc5 140kN/s 3.23/18 403 60...Rd5+ 1 61.Kc4 160kN/s 3.16/18 522 61...Rg5 1 62.Ra3 156kN/s 3.32/17 384 62...Kd6 (Tg8) 1 63.Rf3 188kN/s 3.26/16 208 63...Rg4+ 145 64.Kb5 194kN/s 3.26/18 1 64...f5 84 65.Ng2 166kN/s 3.39/16 113 65...Rg8 12 66.Kc4 120kN/s 3.29/15 235 66...Rg4+ (Tc8+) 78 67.Kc3 142kN/s 3.51/17 162 67...Rg8 (Ke7) 1 68.Ne3 167kN/s 3.69/17 186 68...Rb8 151 69.Nc4+ 163kN/s 3.69/17 1 69...Ke7 80 70.Ne5 150kN/s 3.78/17 311 70...Rc8+ (Kd6) 117 71.Kb3 165kN/s 3.92/17 333 71...Rc1 1 72.Rd3 184kN/s 3.92/16 280 72...Kf6 144 73.Re3 126kN/s 4.02/16 1 73...Rb1+ (Tc7) 190 74.Ka4 143kN/s 4.11/15 127 74...Ra1+ (Ke7) 58 75.Kb5 175kN/s 4.35/16 140 75...Rh1 (Ke7) 90 76.Nd7+ 145kN/s 4.83/13 34 76...Kg5 (Kf7) 152 77.Rxe6 80kN/s 5.06/14 137 77...Rb1 (Tg1) 46 78.Re8 219kN/s 5.82/15 120 78...Kg4 (Kg6) 48 79.Rg8+ 61kN/s 6.08/15 203 79...Kh3 (Kf3) 2 80.Ne5 43kN/s 6.19/15 107 80...Rd1 (Tf1) 128 81.Kc5 86kN/s 6.49/14 34 81...Re1 (Tc1+) 196 82.Nd3 126kN/s 7.51/17 301 82...Re3 162 83.Nf4+ 127kN/s 7.67/17 141 83...Kh2 1 84.b5 37kN/s 7.67/18 454 84...Rc3+ 194 85.Kb6 86kN/s 7.67/16 10 85...Rc2 (Tf3) 256 86.Rg5 29kN/s 8.05/16 453 86...Rb2 5 87.Rxf5 20kN/s 8.27/15 254 87...Kxg3 1208 88.Nxh5+ 194kN/s 10.64/19 1 88...Kg4 160 89.Rc5 258kN/s 15.14/18 120 89...Kf3 339 90.Kc7 141kN/s 15.87/18 1 90...Ke4 237 91.b6 384kN/s 16.59/16 0 91...Kd4 145 92.Nf4 352kN/s 21.95/15 38 92...Rh2 500 93.Ne6+ 416kN/s 22.70/14 1 93...Kd3 (Ke3) 131 94.b7 435kN/s #21/13 396 94...Rh7+ 1 95.Ng7 367kN/s #20/14 414 95...Rxg7+ 1 96.Kc6 #19/1 0 96...Rg6+ 0 97.Kb5 #18/1 0 97...Rg2 0 98.Rc8 #17/4 0 98...Rb2+ 0 99.Kc6 #16/1 0 99...Kd4 (Tb1) 0 100.Rd8+ #16/4 0 100...Ke3 0 101.Rd5 #15/4 0 101...Rxb7 0 102.Kxb7 #14/1 0 102...Kf3 0 103.Kc6 #13/1 0 103...Ke4 0 104.Kd6 #12/1 0 104...Kf4 0 105.Re5 #11/1 0 105...Kf3 0 106.Ke6 #10/1 0 106...Kf4 0 107.Kf6 #9/1 0 107...Kg3 0 108.Rf5 #8/1 0 108...Kg4 0 109.Kg6 #7/1 0 109...Kg3 0 110.Kg5 #6/1 0 110...Kh3 0 111.Kf4 #5/1 0 111...Kg2 0 112.Kg4 #4/1 0 112...Kh1 0 113.Rf2 #3/1 0 113...Kg1 0 114.Kg3 #2/1 0 114...Kh1 0 115.Rf1# #1/1 0 1-0 Uri
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