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.

KQQRBvKQ.pgn lichess.org

Histogram: KQQRB winning vs. KQ (log scale)

Longest KQQRBvKQ phases

KQQRBvKQ statistics (unique positions)

White wins:
339,867,601,543 (97.9%)
Frustrated white wins:
6,318 (0.0%)
Draws:
6,859,950,809 (2.0%)
Black wins:
593,097,354 (0.2%)
KQQRBvKQ.json (?)