Syzygy endgame tablebases

Black is losing with DTZ 108

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


Histogram: KQRB winning vs. KBB (log scale)

Longest KQRBvKBB phases

KQRBvKBB statistics (unique positions)

White wins:
404,165,225,678 (93.4%)
Frustrated white wins:
70,956,622 (0.0%)
28,470,977,228 (6.6%)
Black wins:
88,259,498 (0.0%)
KQRBvKBB.json (?)