Drawn endgame

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Topic The Rybka Lounge / Test Positions / Drawn endgame

By Weirwindle (***)

Date 2012-03-31 06:09

All engines are clueless about the draw looking at them in the face.

8/5k2/8/5P2/1pnB1K2/8/1P6/8 b - - 0 1

1... Nd2 2. Ke3 Nb3 3. Ke4 Na1 4. Kd3 b3 5. Bc3 Ke7 6. Be5 Kf7 7. f6 Kg6

8/8/5Pk1/4B3/8/1p1K4/1P6/n7 w - - 0 8

By lech

Date 2012-04-04 13:19

Both the engines (1 cpu) can solve it (Sting is much faster)

Stockfish-222-32-ja:
info depth 45 seldepth 59 score cp -315 nodes 262395203 nps 489796 time 535723 m
ultipv 1 pv c4d2 f4e3 d2b3 e3e4 b3a1 d4c5 b4b3 c5d6 f7f6 d6e5 f6f7 e4d3 f7f8 e5d
4 f8e7 d3e4 a1c2 d4c3 e7f7 e4d3 f7e7 c3h8 e7f7 d3c3 c2a1 c3c4 f7e7 h8c3 e7e8 f5f
6 e8f7 c3e5 f7e8 c4c5 e8f7 c5d5 a1c2 d5c4 c2a1 c4d4 f7f8 d4c4 f8e8

Sting SF 2.0 (beta):
info depth 30 seldepth 39 multipv 1 score cp -286 nodes 19878948 nps 682843 time
29112 pv c4d2 f4e5 d2b3 e5e4 b3a1 e4d3 b4b3 d4e5 a1c2 d3c3 c2a1 c3c4 f7e7 c4d4
e7f7 d4c3 f7g8 c3c4 g8f7 c4d3

The draw is, since the score doesn't grow. In the rules of chess I can't see scores only moves.

By Pia

Date 2012-04-06 12:51

But they won't accept draw unless score drops to 0.00

Na5 also leads to draw:

Topic The Rybka Lounge / Test Positions / Drawn endgame