Author: Johan Melin
Date: 00:57:59 07/29/04
Go up one level in this thread
On July 28, 2004 at 14:46:05, Kurt Utzinger wrote:
>Wcrafty 19.15 (console mode P4 1.8) finds the solution
>almost instantly.
>Kurt
>
>[D]1knB4/8/7p/5R2/7K/8/3r4/7B w - - 0 1
>
This problem is really deep, I think no engine will find it for the right
reason(in reasonable time):
1. Rb5+ Nb6 2. Bxb6 Rh2+ 3. Kh4 Rxh1 4. Bg1+ Kc8 5. Rb1 Kd7 6. Re1 Kc6 7. Rd1
Kb7 8. Rc1 Ka8 9. Rb1 h5+ 10. Kg3 11. h4+ Kg2 12. Rh3 Ra1+
KnightDreamer 3.3 can't solve it from the root, but after analyzing the deeper
positions and "backing up" it finds it:
11 551 3933 9585286 f5b5 c8b6 d8b6 d2h2 h4g4 h2h1 b6g1 b8c7
b5b1 c7d7 b1e1 h6h5 g4g3 h5h4 g3g2 h1g1
e1g1 d7e6 g1h1 e6d5 h1h4 (243.7k)
/Johan Melin
>
> 8 0.21 4.21 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Bf6 Rh2+
> 4. Kg3 Rxh1 5. Kg2 Re1 6. Kg3
> 8-> 0.31 4.21 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Bf6 Rh2+
> 4. Kg3 Rxh1 5. Kg2 Re1 6. Kg3
> 9 0.51 4.10 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Bc6 Rxd8
> 4. Rb7 Rd6 5. Be4 Rd7 6. Rb6
> 9-> 0.78 4.10 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Bc6 Rxd8
> 4. Rb7 Rd6 5. Be4 Rd7 6. Rb6
> 10 1.25 -1 1. Rb5+
> 10 1.87 1.58 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Rd6 Rxd6
> 4. Ba5 Kd7 5. Bc3 Rd3 6. Bg7 Rd1
> 10-> 2.93 1.58 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Rd6 Rxd6
> 4. Ba5 Kd7 5. Bc3 Rd3 6. Bg7 Rd1
> 11 4.22 1.23 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rxd8
> 4. Kf5 Kc7 5. Rc6+ Kd7 6. Rxh6 Kc7
> 7. Ke5 <HT>
> 11-> 7.20 1.23 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rxd8
> 4. Kf5 Kc7 5. Rc6+ Kd7 6. Rxh6 Kc7
> 7. Ke5 <HT>
> 12 10.44 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh7+ Kb6
> 7. Ke5 Rd1 8. Bd5
> 12-> 18.58 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh7+ Kb6
> 7. Ke5 Rd1 8. Bd5
> 13 26.48 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh7+ Kb6
> 7. Ke5 Rd1 8. Bf3 Ra1
> 13-> 44.63 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh7+ Kb6
> 7. Ke5 Rd1 8. Bf3 Ra1
> 14 1:06 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh5 Kb6 7.
> Ke4 Kc6 8. Kf4+ Kb6 9. Ke5
> 14-> 2:04 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh5 Kb6 7.
> Ke4 Kc6 8. Kf4+ Kb6 9. Ke5
> 15 3:17 1.22 1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Kxd8
> 4. Rxh6 Kc7 5. Kf5 Rd6 6. Rh5 Kb6 7.
> Ke4 Kc6 8. Re5 Kb6 9. Bf3
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.