Author: Gordon Rattray
Date: 03:33:36 12/19/04
Go up one level in this thread
On December 15, 2004 at 09:43:11, Uri Blass wrote: [snip] >What about the bug of finding mates when there is no mate because of wrong >stalemate detection? > >I know that you know about that bug in stalemate detection for some years so >what is the reason that you did not fixed it. > >You do not have to fix the bug and Junior is a good program inspite of the bug >but I hope that you can explain the reason that you did not fix it. > >I am interested to know which of the following possibilities is correct(more >than 1 can be correct) > >1)It is hard to fix it without generating new bugs and without reducing it's >playing strength because of making it slower and it is not something that you >can do in a short time. > >2)It is easy and possible to fix it without bugs in a short time but the result >will be that Junior will be at least 5% slower and it means lower rating. > >3)Fixing the problem without bugs and without doing Junior slower is something >that you plan to do sometimes in the future but it was not until now in the top >of your priorities. > >Uri I'm not sure how often this comes into practice. Maybe very little, but it does happen. Here's a case of a recent games. Gordon (17) Deep Junior 9 - Shredder 8 [C84] S8 - DJ9, 75'/40+0'/0+15' DUALOPTERON (4), 18.12.2004 [0.34;0.40] W=18.9 ply; 3,365kN/sB=19.9 ply; 980kN/s; 93 TBAs 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0–0 Be7 6.Re1 White last book move 6...0–0 7.Bxc6 0.34/20 2:50 dxc6 8.Nxe5 0.41/19 1:12 Re8 Black last book move 9.Nf3 0.56/19 2:38 Bg4 0.40/20 4:03 10.d3 0.41/18 1:39 Nd7 0.34/19 2:52 11.Nbd2 (h3) 0.47/18 1:24 11...Ne5 0.40/19 3:18 12.h3 0.59/20 3:49 Bh5 0.50/19 2:22 13.g4 0.57/20 3:41 Nxf3+ 0.67/19 3:14 14.Nxf3 0.48/20 6:09 Bg6 0.69/20 2:20 15.Bf4 0.38/20 5:34 Bd6 (Bc5) 0.74/19 3:32 16.Qd2 0.54/19 3:52 Rc8 (h5) 0.80/18 2:40 17.Rad1 (e5) 0.77/19 3:35 17...c5 (h6) 0.91/18 4:43 18.b3 (e5) 0.76/18 1:12 18...b6 (h5) 0.95/18 2:54 19.e5 0.82/19 2:22 Bf8 1.04/20 5:28 20.Bg3 (Qe3) 0.82/20 2:31 20...h6 1.19/18 3:48 21.Nh4 (c4) 0.85/20 3:14 21...Bh7 1.47/18 1:03 22.f4 1.10/19 2:17 Be7 (a5) 1.53/19 2:45 23.Qf2 (Nf3) 1.30/20 2:07 23...c4 (Qd5) 1.62/18 2:11 24.bxc4 1.57/18 3:18 Bb4 1.88/18 2:25 25.Rf1 (Re2) 1.65/19 2:56 25...Qd7 (c5) 1.65/19 4:23 26.f5 (Qe2) 1.69/19 2:51 26...Bc3 1.78/18 4:45 27.Nf3 (Qe2) 1.81/17 1:46 27...c5 1.79/18 6:31 28.Qe3 (Qe2) 1.72/19 4:40 28...Qa4 1.72/17 44 29.Rb1 1.65/19 5:30 b5 1.70/18 1:45 30.Rb3 (cxb5) 1.54/17 2:12 30...b4 2.00/18 2:04 31.a3 1.71/18 2:03 a5 2.02/19 2:15 32.Qe4 (f6) 1.66/18 1:44 32...Qd7 (Qc6) 2.20/18 2:52 33.Be1 1.76/17 1:14 Bxe1 2.24/17 1:33 34.Rxe1 1.66/17 1:29 Rb8 (Rcd8) 2.43/18 5:14 35.Qd5 (d4) 1.65/16 1:11 35...Qc7 2.81/18 2:15 36.Qd6 (axb4) 1.67/16 1:26 36...Qa7 2.47/19 1:58 37.Rbb1 (e6) 1.67/16 1:56 37...Rbd8 (Red8) 2.08/18 1:32 38.Qc6 1.85/19 3:05 Rc8 2.26/19 2:14 39.Qe4 (Qa4) 1.82/18 2:40 39...Rb8 (Rcd8) 2.23/17 1:42 40.a4 (g5) 2.21/18 2:42 40...Qd7 2.08/18 1:41 41.Nd2 (Qd5) 2.29/18 1:17 41...Qc7 (Qxa4) 2.31/19 1:27 42.Nb3 2.65/17 29 Rbc8 (Rbd8) 2.87/19 2:33 43.Re2 (Qd5) 2.88/17 27 43...Qd8 (Kh8) 3.07/17 1:25 44.Qd5 (Qf3) 3.12/16 30 44...Qc7 3.11/18 1:29 45.Rbe1 (Rf1) 3.20/17 20 45...Red8 3.38/18 45 46.Qg2 (Qf3) 3.35/18 33 46...Kh8 (Rd7) 3.38/18 1:45 47.e6 3.63/18 42 f6 (fxe6) 3.37/19 45 48.e7 (Qh2) 3.87/18 26 48...Re8 3.22/19 13 49.h4 (Qh2) 3.87/18 25 49...Qb6 (Qa7) 3.82/17 1:45 50.g5 4.32/17 44 Qd6 4.37/16 1:04 51.g6 (Qf2) 4.44/15 18 51...Bg8 4.51/17 16 52.Qh2 (Nxa5) 4.46/18 43 52...Qb6 (Qc6) 3.40/20 44 53.Qf4 (h5) 4.46/19 29 53...Rc7 (Ra8) 3.34/21 49 54.Re4 4.46/18 45 Rc6 (Rcc8) 3.31/20 42 55.h5 (Qf2) 4.46/18 28 55...Rc7 (Rcc8) 3.34/19 17 56.Qg3 4.45/18 39 Rcc8 3.31/20 45 57.Qh2 (R1e2) 4.45/18 30 57...Rc6 (Qc6) 3.30/21 32 58.Qh4 (Qf2) 4.45/18 31 58...Rcc8 (Rc7) 3.31/21 50 59.Qg3 4.44/19 40 Rc7 (Ra8) 3.30/20 39 60.R1e2 (Qe3) 4.43/17 18 60...Rcc8 (Ra7) 3.31/21 37 61.Qf4 4.44/18 20 Rc7 (Qc6) 3.31/20 43 62.Kf2 (Re1) 4.34/18 48 62...Ra7 3.30/20 1:02 63.Kg3 (Qe3) 4.33/19 55 63...Raa8 (Qc6) 3.30/19 36 64.Qe3 4.34/17 37 Rac8 3.30/19 43 65.Kh3 (Kg2) 4.35/18 44 65...Rc7 (Qc7) 3.31/20 46 66.Qg3 (Qf4) 4.39/18 29 66...Rcc8 (Ra7) 3.30/20 48 67.Re1 (Kh2) 4.45/18 27 67...Rc6 (Ra8) 3.32/19 39 68.Qf4 (Kh2) 4.45/18 30 68...Rcc8 (Rc7) 3.32/20 31 69.Kg2 (Kh2) 4.43/18 36 69...Rc7 (Ra8) 3.32/21 45 70.Kf1 (Kg1) 4.45/17 23 70...Rcc8 3.31/19 38 71.Ke2 (Qe3) 4.34/18 35 71...Ra8 3.69/18 1:28 72.Kd2 (Qd6) 4.65/17 57 72...Ra7 (Rac8) 3.26/19 56 73.Qf2 (Qe3) 4.63/18 40 73...Rc7 3.25/19 22 74.Qg3 (R1e2) 4.54/19 56 74...Rd7 3.26/19 30 75.Qg1 (Qe3) 4.54/18 28 75...Rc7 3.24/19 31 76.Qh2 (R1e2) 4.54/19 28 76...Ra7 3.23/20 36 77.Kd1 (R1e2) 4.54/19 34 77...Qc6 2.64/17 7 78.Qg1 (Qf2) 4.54/18 40 78...Rc7 3.15/19 36 79.Qg3 4.54/17 10 Ra7 3.19/18 27 80.Kd2 4.54/18 32 Rd7 3.19/19 57 81.Qg1 (R1e2) 4.53/17 31 81...Rc7 3.19/19 40 82.Qh2 (Nxa5) 4.53/18 36 82...Ra7 (Rd7) 3.19/19 25 83.Qf2 4.53/17 16 Rc7 3.19/20 35 84.Nxa5 (Qf4) 4.54/17 39 84...Qxa4 (Qd6) 3.24/16 8 85.Nb3 4.54/17 9 Qa7 (Qc6) 3.36/18 31 86.Qe3 4.54/17 24 Qa6 (Qa8) 3.39/19 57 87.Qf4 (Re2) 4.54/17 31 87...Qc6 3.38/18 35 88.Qh2 (R1e2) 4.53/18 29 88...Rcc8 (Qd7) 3.36/19 49 89.Qf2 (R1e2) 4.53/18 33 89...Qd7 (Qc7) 3.36/19 35 90.Qf4 (R1e2) 4.53/18 35 90...Qc6 (Rc7) 3.37/19 33 91.R1e3 (R1e2) 4.53/18 25 91...Qb6 (Rc7) 3.38/19 38 92.Qg3 (Ke1) 4.53/19 35 92...Qa6 3.38/20 39 93.Re1 (Re2) 4.53/18 23 93...Rc6 (Qc6) 3.37/20 44 94.Qh2 (R1e2) 4.53/17 34 94...Qc8 (Rcc8) 3.37/19 33 95.Qf4 (Qf2) 4.53/17 28 95...Rc7 3.38/20 33 96.R1e2 4.53/17 18 Qb7 (Qd7) 3.39/20 32 97.Qd6 4.87/18 37 Qc8 3.40/21 31 98.Qb6 (Ke1) 4.87/18 31 98...Rc6 (Rb7) 3.55/19 43 99.Qb5 4.99/18 21 Rc7 3.50/20 27 100.Re1 (Ke1) 4.87/18 17 100...Rc6 3.50/20 31 101.R1e3 4.87/18 36 Rc7 3.58/20 27 102.Re2 4.92/19 34 Rc6 3.55/20 28 103.Re1 (Kd1) 4.87/18 19 103...Rc7 3.52/19 28 104.R1e3 (Kd1) 4.87/19 41 104...Rc6 3.53/19 29 105.Ke1 (Na5) 4.86/19 33 105...Rc7 3.52/19 25 106.Kd1 (Ke2) 4.86/19 32 106...Rc6 3.52/19 23 107.Re2 (Na5) 4.86/18 19 107...Rc7 (Qa8) 3.51/19 24 108.Re1 (Na5) 4.82/19 38 108...Qa8 3.52/19 36 109.Qb6 (Kc1) 4.82/17 35 109...Rc6 3.52/19 31 110.Qa5 4.82/18 12 Qc8 (Qb8) 3.52/19 31 111.Qb5 (R1e2) 4.86/17 20 111...Rc7 3.52/19 18 112.R4e3 (R1e2) 4.81/18 25 112...Qa8 (Rb7) 3.50/19 29 113.Kd2 4.82/18 32 Qc8 3.50/19 29 114.Kc1 (R1e2) 4.68/19 1:05 114...Qa8 (Rb7) 3.52/19 29 115.Re4 (Kb1) 4.57/18 27 115...Qc8 3.52/19 34 116.R4e2 (Kb1) 4.60/18 21 116...Qa8 (Ra7) 3.51/20 24 117.Kd2 (Kb1) 4.68/18 1:40 117...Rcc8 (Rb7) 3.53/18 28 118.Re4 (Nxc5) 4.60/17 16 118...Qa7 2.90/17 9 119.R1e2 (Qa5) 4.30/16 53 119...Qc7 2.55/20 29 120.R4e3 (Kc1) 4.04/18 32 120...Qd6 (Qf4) 2.55/20 30 121.Kc1 4.00/18 19 Qc7 (Qf4) 2.56/20 34 122.Kb1 (Re1) 4.16/19 25 122...Qd6 2.56/20 33 123.Re4 (Re1) 4.01/18 19 123...Qc7 (Qg3) 2.58/20 34 124.Kb2 (Re1) 4.08/18 16 124...Qd6 (Qg3) 2.57/20 33 125.Qa4 (Kc1) 4.02/17 15 125...Qc7 2.55/20 33 126.Re1 (Kb1) 4.08/19 50 126...Qd6 2.56/19 27 127.R4e2 (Qa5) 4.08/17 24 127...Qc7 (Rb8) 2.57/19 29 128.Qb5 (Kb1) 4.08/19 34 128...Qd6 2.60/20 36 129.Kb1 4.07/18 19 Qc7 2.46/19 27 130.Re4 (Qa4) 4.07/19 25 130...Qd6 2.37/16 6 131.Kb2 (R1e3) 4.01/18 26 131...Qc7 2.63/16 7 132.Kc1 (Ra1) 3.68/18 59 132...Qd6 1.99/18 39 133.Kb1 (Qa5) 3.68/17 16 133...Ra8 (Qc7) 3.76/17 1:06 134.Qxc5 4.46/15 8 Qg3 (Qh2) 4.19/18 34 135.Qc6 (R4e2) 4.90/17 45 135...Qh2 3.97/17 34 136.Qxa8 (Nd4) 13.46/18 10 136...Rxa8 3.68/21 35 137.e8R (R4e2) 19.13/21 31 137...Rxe8 (Rb8) 0.00/25 31 138.Rxe8 #8/20 10 Qxc2+ (Qd6) 0.00/25 30 139.Kxc2 Draw accepted 0.00/61 1 ½–½
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