Syzygy endgame tablebases

White is winning with DTZ 105

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

KQQQvKQB.pgn lichess.org

Histogram: KQQQ winning vs. KQB (log scale)

Longest KQQQvKQB phases

KQQQvKQB statistics (unique positions)

White wins:
304,272,511,590 (97.8%)
Frustrated white wins:
30,018 (0.0%)
Draws:
4,662,919,617 (1.5%)
Black wins:
2,063,255,859 (0.7%)
KQQQvKQB.json (?)