Syzygy endgame tablebases

Black is losing with DTZ 267

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


Histogram: KBBBN winning vs. KQ (log scale)

Longest KBBBNvKQ phases

KBBBNvKQ statistics (unique positions)

White wins:
174,958,202,301 (38.7%)
Frustrated white wins:
33,134,250,633 (7.3%)
174,181,105,455 (38.6%)
Frustrated black wins:
6,520,136,808 (1.4%)
Black wins:
62,729,516,085 (13.9%)
KBBBNvKQ.json (?)