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 lichess.org

Histogram: KQRB winning vs. KQN (log scale)

Longest KQRBvKQN phases

KQRBvKQN statistics (unique positions)

White wins:
278,390,151,514 (72.0%)
Frustrated white wins:
316,056 (0.0%)
Draws:
60,107,946,481 (15.5%)
Black wins:
48,353,872,151 (12.5%)
KQRBvKQN.json (?)