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Syzygy endgame tablebases

Black is losing with DTZ 121

Rf4 Loss with DTZ 121

Rf1+ Loss with DTZ 25 Rf3 Loss with DTZ 9 Rd2 Loss with DTZ 1 Re2 Loss with DTZ 1 Rg2 Loss with DTZ 1 Rh2 Loss with DTZ 1 Rxc2+ DTM 23 Zeroing f4 Zeroing

This is a blessed loss. Mate can be forced, but a draw can be achieved under the fifty-move rule.

Histogram: KRP winning vs. KRP (log scale)

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Longest KRPvKRP phases

KRPvKRP statistics

5,866,836,604 (27.7%)

166,098 (0.0%)

9,445,219,586 (44.6%)

166,098 (0.0%)

5,866,836,604 (27.7%)

KRPvKRP.json (?)