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Syzygy endgame tablebases

Black is losing with DTZ 156

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

KQRBvKQN.pgn

Histogram: KQRB winning (log scale)

Longest KQRBvKQN phases

KQRBvKQN statistics

278,390,151,514 (72.0%)
316,056 (0.0%)
60,107,946,481 (15.5%)
48,353,872,151 (12.5%)
KQRBvKQN.json (?)