Syzygy endgame tablebases

Black is losing with DTZ 313

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

KBBBPvKQ.pgn lichess.org

Histogram: KBBBP winning vs. KQ (log scale)

Longest KBBBPvKQ phases

KBBBPvKQ statistics (unique positions)

White wins:
466,814,281,554 (33.5%)
Frustrated white wins:
1,591,841,424 (0.1%)
Draws:
490,742,623,644 (35.2%)
Frustrated black wins:
20,978,596,098 (1.5%)
Black wins:
412,522,916,880 (29.6%)
KBBBPvKQ.json (?)