Syzygy endgame tablebases

White is winning with DTZ 633

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

KQBNvKQN.pgn lichess.org

Histogram: KQBN winning vs. KQN (log scale)

Longest KQBNvKQN phases

KQBNvKQN statistics (unique positions)

White wins:
194,341,735,743 (47.1%)
Frustrated white wins:
5,447,683,191 (1.3%)
Draws:
139,700,868,049 (33.8%)
Black wins:
73,354,027,921 (17.8%)
KQBNvKQN.json (?)