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Syzygy endgame tablebases

Black is losing with DTZ 257

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

KBBNvKBN.pgn

Histogram: KBBN winning (log scale)

Longest KBBNvKBN phases

KBBNvKBN statistics

167,723,087,396 (31.8%)
38,448,763,318 (7.3%)
321,018,125,590 (60.9%)
92,134 (0.0%)
107,435,338 (0.0%)
KBBNvKBN.json (?)