Author: Kurt Utzinger
Date: 07:31:54 05/16/04
Go up one level in this thread
On May 16, 2004 at 07:46:09, Dieter Buerssner wrote:
>This is from yesterdays ICC tourney. I think, especially without TBs, the
>positions might be rather hard.
>
>[D] 8/1R6/8/7P/2k3P1/1p4K1/8/7r w - - 8 97
>
>Here Baron played Rb8, allowing a draw. Rb6 wins (I think, everything else
>draws).
>
>After Rb8:
>
>1R6/8/8/7P/2k3P1/1p4K1/8/7r b - - 9 97
>
>Now Arasan played Rg1+, which is losing. Kc3 draws (everything else loses).
>After Rg1+ the game continued 98.Kf4 Kc3 99.g5 b2 100.Rxb2!? Kxb2 and the two
>pawns win against the rook.
>
>Does any engine without TBs find Rb6 in the first pos with convincing score? And
>in the second pos, does any engine without TBs see, that Kc3 is really much
>better than alternative moves? The testpositions are not really good, because
>the moves can be found without "understanding" the pos.
>
>Regards,
>Dieter
The only engine I have found which seems to have
an idea of this rook ending without EGTB is
Little Goliath 2000 v3.9 UCI
Kurt
LG2000v3.9 UCI1: (P4 1.8/32 MB hash, Arena 1.0.8)
6 00:00 0.86 Kf4 Kc3 Rc7+ Kb4 Kf5
7 00:00 1.16 Kf4 Kc3 Rc7+ Kb4 Kf5
7 00:00 1.16 Kf4 Kc3 Kf5 Rh4 Rc7+ Kb4
7 00:00 1.23 Rb6 Kc3 h6 b2 g5 b1Q Rxb1 Rxb1
8 00:00 1.23 Rb6 Kc3 h6 b2 g5 b1Q Rxb1 Rxb1
8 00:00 1.43 Kf4
8 00:00 1.43 Kf4 Kc3 Kf5 b2 Kg6 Kc2 h6 Rh4
9 00:00 1.10 Kf4 Kc3 Kf5 b2 Kg6 Kc2 h6 Rh4
9 00:00 1.14 Kf4 Kc3
9 00:00 1.30 Rb6
9 00:00 1.28 Rb6 Kc3 h6
10 00:00 1.62 Rb6 Kc3 h6
10 00:00 1.55 Rb6 Kc3 h6 Rg1+ Kf4
11 00:00 1.23 Rb6 Kc3 h6 Rg1+ Kf4
11 00:00 1.29 Rb6 Kc3
12 00:01 1.65 Rb6 Kc3
12 00:02 1.64 Rb6 Rg1+ Kf4 Rf1+ Ke5 Rf8 g5
13 00:04 1.94 Rb6 Rg1+ Kf4 Rf1+ Ke5 Rf8 g5
13 00:05 2.16 Rb6 Rg1+ Kf4 Rh1 h6 Kc5 Rxb3 Rxh6 Re3 Kd6
14 00:13 2.31 Rb6 Rg1+ Kf4 Rh1 h6 Kc5 Rxb3 Rxh6 g5 Ra6 Re3 Ra8 Kf5 Rf8+ Kg6
Kd5 Kg7 Rf1
15 00:33 2.61 Rb6 Rg1+ Kf4 Rh1 h6 Kc5 Rxb3 Rxh6 g5 Ra6 Re3 Ra8 Kf5 Rf8+ Kg6
Kd5 Kg7 Rf1
15 00:35 2.60 Rb6 Rg1+ Kf4
16 01:20 2.90 Rb6 Rg1+ Kf4
16 01:24 2.88 Rb6 Rg1+ Kf4
17 03:31 3.18 Rb6 Rg1+ Kf4
17 03:50 3.17 Rb6 Rg1+ Kf4
LG2000v3.9 UCI1:
6 00:00 0.70 Kc3 Kf4
6 00:00 1.02 Kc3 Kf4 b2 Rb7 Rf1+
7 00:00 0.71 Kc3 Kf4 b2 Rb7 Rf1+
7 00:00 1.02 Kc3 Kf4 b2 Rb7 Rf1+
8 00:00 0.86 Kc3 Kf4 b2 Rb7 Rf1+ Ke5 Re1+ Kf6 b1Q Rxb1 Rxb1
9 00:00 0.88 Kc3 Kf4 b2 Rb7 Kc2 Kg5 b1Q Rxb1 Kxb1
10 00:00 1.18 Kc3 Kf4 b2 Rb7 Kc2 Kg5 b1Q Rxb1 Kxb1
10 00:00 1.17 Kc3 Kf4
11 00:00 0.86 Kc3 Kf4
11 00:00 0.86 Kc3 Kf4 b2 Rb5 Rf1+ Ke5 Rh1 Kf6 b1Q Rxb1 Rxb1
12 00:00 0.77 Kc3 Kf4 b2 Rb5 Kc2 Kf5 b1Q Rxb1 Rxb1 g5 Rh1
13 00:00 1.07 Kc3 Kf4 b2 Rb5 Kc2 Kf5 b1Q Rxb1 Rxb1 g5 Rh1
13 00:00 1.06 Kc3 Kf4
14 00:01 0.76 Kc3 Kf4
14 00:01 0.78 Kc3 Kf4 b2 Rb5
15 00:04 0.48 Kc3 Kf4 b2 Rb5
15 00:05 0.53 Kc3 Kf4 b2 Rb5
16 00:07 0.83 Kc3 Kf4 b2 Rb5
16 00:11 0.82 Kc3 Kf4 b2 Rb5
17 00:30 0.52 Kc3 Kf4 b2 Rb5
17 00:41 0.57 Kc3 Kf4 b2 Rb5
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