Syzygy endgame tablebases

White is losing with DTZ 148

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

KBBBvKQ.pgn lichess.org

Histogram: KBBB losing vs. KQ (log scale)

Longest KBBBvKQ phases

KBBBvKQ statistics (unique positions)

White wins:
1,445,806,086 (18.1%)
Draws:
2,729,242,074 (34.1%)
Frustrated black wins:
308,618,502 (3.9%)
Black wins:
3,511,145,946 (43.9%)
KBBBvKQ.json (?)