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Syzygy endgame tablebases

Black is losing with DTZ 122

Ka8 Loss with DTZ 121

Ka6 Loss with DTZ 1 Kc6 Loss with DTZ 1 Ra8 Loss with DTZ 1 Rb8 Loss with DTZ 1 Rd8 Loss with DTZ 1 Re8 Loss with DTZ 1 Rf8 Loss with DTZ 1 Rg8 Loss with DTZ 1 Rh8 Loss with DTZ 1 Kxa7 Zeroing Rxc7 Zeroing

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

Histogram: KRBPP winning (log scale)

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Longest KRBPPvKR phases

KRBPPvKR statistics

1,087,107,960,184 (93.4%)

565,034 (0.0%)

74,426,600,674 (6.4%)

2,805,481,968 (0.2%)

KRBPPvKR.json (?)