Syzygy endgame tablebases

White is winning with DTZ 217

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

KQBBvKQB.pgn lichess.org

Histogram: KQBB winning vs. KQB (log scale)

Longest KQBBvKQB phases

KQBBvKQB statistics (unique positions)

White wins:
175,007,790,234 (45.1%)
Frustrated white wins:
93,584,766 (0.0%)
Draws:
140,753,993,791 (36.2%)
Frustrated black wins:
567,262,676 (0.1%)
Black wins:
71,918,655,023 (18.5%)
KQBBvKQB.json (?)