Syzygy endgame tablebases

Black is losing with DTZ 106

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

KQQRRvKQ.pgn lichess.org

Histogram: KQQRR winning vs. KQ (log scale)

Longest KQQRRvKQ phases

KQQRRvKQ statistics (unique positions)

White wins:
327,098,831,832 (97.9%)
Frustrated white wins:
14,616 (0.0%)
Draws:
6,461,482,134 (1.9%)
Black wins:
463,219,542 (0.1%)
KQQRRvKQ.json (?)