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Syzygy endgame tablebases

Black is losing with DTZ 135

Kg7 Loss with DTZ 134 Kf8 Loss with DTZ 132

Kh8 Loss with DTZ 5 Rf7 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: KBNP winning (log scale)

Longest KBNPvKR phases

KBNPvKR statistics

14,482,868,417 (50.4%)

240,282 (0.0%)

14,014,079,397 (48.8%)

227,028,785 (0.8%)

KBNPvKR.json (?)