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Syzygy endgame tablebases

Black is losing with DTZ 118

Rc6 Loss with DTZ 117

Nb7 Loss with DTZ 5 Nc6 Loss with DTZ 3 Ra8 Loss with DTZ 3 Ke2 Loss with DTZ 3 Kf2 Loss with DTZ 3 Nb3 Loss with DTZ 1 Nc4 Loss with DTZ 1 Ra7 Loss with DTZ 1 Rb6 Loss with DTZ 1 Rd6 Loss with DTZ 1 Re6 Loss with DTZ 1 Rf6 Loss with DTZ 1 Rg6 Loss with DTZ 1 Rh6 Loss with DTZ 1

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

Histogram: KQBN winning vs. KRN (log scale)

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Longest KQBNvKRN phases

KQBNvKRN statistics

367,612,368,631 (81.2%)

25,190,949 (0.0%)

74,468,661,616 (16.5%)

1,914,358,152 (0.4%)

8,631,355,860 (1.9%)

KQBNvKRN.json (?)