Syzygy endgame tablebases

Black is losing with DTZ 447

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


Histogram: KBNNN winning vs. KQ (log scale)

Longest KBNNNvKQ phases

KBNNNvKQ statistics (unique positions)

White wins:
183,959,275,377 (38.5%)
Frustrated white wins:
24,363,589,344 (5.1%)
193,478,855,049 (40.5%)
Frustrated black wins:
28,177,434 (0.0%)
Black wins:
75,675,547,056 (15.8%)
KBNNNvKQ.json (?)