Syzygy endgame tablebases

Black is losing with DTZ 543

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

KQNNvKQB.pgn lichess.org

Histogram: KQNN winning vs. KQB (log scale)

Longest KQNNvKQB phases

KQNNvKQB statistics (unique positions)

White wins:
143,109,830,543 (34.8%)
Frustrated white wins:
3,201,538,860 (0.8%)
Draws:
180,171,137,538 (43.8%)
Frustrated black wins:
2,646,638 (0.0%)
Black wins:
85,032,559,221 (20.7%)
KQNNvKQB.json (?)

KQNNvKQB dependencies

To probe all KQNNvKQB positions, these tables and their transitive dependencies are also required:

KQBvKNN · KQNNvKB · KQNNvKQ · KQBvKQN

KQNNvKQB.txt KQNNvKQB.dot