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.

KQQBvKBB.pgn lichess.org

Histogram: KQQB winning vs. KBB (log scale)

Longest KQQBvKBB phases

KQQBvKBB statistics (unique positions)

White wins:
403,245,514,538 (99.7%)
Frustrated white wins:
7,781,420 (0.0%)
Draws:
974,758,154 (0.2%)
Black wins:
56,787,684 (0.0%)
KQQBvKBB.json (?)