Syzygy endgame tablebases

Black is losing with DTZ 214

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


Histogram: KQBB winning vs. KQN (log scale)

Longest KQBBvKQN phases

KQBBvKQN statistics (unique positions)

White wins:
204,589,619,610 (51.1%)
Frustrated white wins:
6,417,186,753 (1.6%)
123,043,765,858 (30.7%)
Frustrated black wins:
471,566,058 (0.1%)
Black wins:
66,007,235,431 (16.5%)
KQBBvKQN.json (?)