Author: Andrew Williams
Date: 03:22:12 01/20/01
Go up one level in this thread
On January 20, 2001 at 01:32:14, Scott Gasch wrote: >Well, I think the problem with my engine may be still a branching factor or >search tree size type of thing now that I see the speed of AMY and the >nodecounts on one of the other engine's outputs posted here. By comparison my >engine needs 14M nodes and 112 seconds to find this move. > >Thanks to all for the advice... I will look for bugs and play with extensions to >try to improve this. > >Scott > >Thinking until interrupted... > 1 88 0.0 30 PV = Ke6 [Q] > 2 75 0.0 143 PV = c3 bxc3 [Q] > 3 75 0.0 581 PV = c3 bxc3 Rxc3 [Q] > 4 142 0.1 1631 PV = c3 bxc3 Rxc3 Ra2 [Q] > 5 163 0.1 4926 PV = c3 Rxd3 c2 Rd6+ Ke7 Rc6 [Q] > 6 179 0.2 15748 PV = c3 bxc3 Rxc3 Ra2 Rc2 Rxc2 [Q] > 7 179 0.5 44780 PV = c3 bxc3 Rxc3 e4 Rxa3 e5+ Ke6 Ke3 [Q] > 8 104 1.2 135046 **FL** A from 104 -> -INF > 8 72 3.0 339387 PV = Rb8 e4 fxe4+ Kxe4 Re8+ Kf3 Kf5 Rg2 Re1 Rg5+ >Ke6 [Q] > 9 86 8.1 958574 PV = Rb8 e4 fxe4+ Kxe4 Re8+ Kf3 Re1 Kf2 Rc1 Ke3 >Rc2 [Q] >10 99 38.2 4747523 PV = Rb8 Rg2 Rd8 Rg1 Ke6 Rd1 [TT] >11 174 98.5 12442010 **Rb8!!** B from 174 -> +INF >11 194 112.4 14315237 PV = Rxb2 Rxb2 c3 Rb6+ Ke7 Rb7+ Kd6 Rb6+ Kc7 Rb5 >[TT] >12 250 185.6 24128799 PV = Rxb2 Rxb2 c3 Rb6+ Ke7 Rb7+ Kd6 Rb6+ Kc7 Rb1 >c2 Rc1 Kd8 e4 d2 [Q] >13 325 199.3 25894041 **Rxb2!!** B from 325 -> +INF >13 406 342.8 45945629 PV = Rxb2 Rxb2 c3 Rb6+ Ke7 Rb7+ Kd6 Rb6+ Kc7 Rb1 >c2 Rc1 Kb6 e4 d2 Rxc2 [Q] Hi Scott Mine takes 4M nodes to see this and doesn't get it until ply 12 after 93 seconds: 8= 75 5 198677 1... c3 2. bxc3 Rxc3 3. e4 fxe4 4. Kxe4 Rxa3 5. h3 h5 6. Rxd3 Rxd3 7. Kxd3 9> 75 5 212691 1... c3 2. bxc3 Rxc3 3. e4 fxe4 4. Kxe4 Rxa3 5. h4 h5 6. Rxd3 Rxd3 7. Kxd3 a3 9= 92 9 384461 1... c3 2. bxc3 Rxc3 3. e4 Rxa3 4. e5 Ke6 5. Ke3 Kd5 6. Rxd3 Rxd3 7. Kxd3 a3 10> 92 10 412813 1... c3 2. bxc3 Rxc3 3. e4 Rxa3 4. e5 Ke6 5. Ke3 Kd5 6. Rxd3 Rxd3 SCRUBBING TT (on new guess): 12 [183] 172 10= 250 24 1135539 1... c3 2. bxc3 Rxc3 3. e4 fxe4 4. Kxe4 Rxa3 5. h4 h5 6. Rxd3 Rxd3 7. Kxd3 11> 245 52 2426273 1... c3 2. bxc3 Rxc3 3. e4 fxe4 4. Kxe4 Rxa3 5. h4 Rc3 6. Rxd3 Rxd3 11= 245 55 2580229 1... c3 2. bxc3 Rxc3 3. e4 fxe4 4. Kxe4 Rxa3 5. h4 Rc3 6. Rxd3 Rxd3 12> 245 93 4096845 1... Rxb2 2. Rxb2 c3 3. Rb6 Ke7 4. Rb7 Kd6 5. Rb6 Kc5 6. Rb7 c2 7. Rc7 Kd6 8. Rc4 d2 Andrew
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