Syzygy endgame tablebases

Black is losing with DTZ 202

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

KRRNvKQ.pgn lichess.org

Histogram: KRRN winning vs. KQ (log scale)

Longest KRRNvKQ phases

KRRNvKQ statistics (unique positions)

White wins:
4,780,344,691 (63.0%)
Frustrated white wins:
996,368 (0.0%)
Draws:
2,097,628,333 (27.6%)
Black wins:
712,740,904 (9.4%)
KRRNvKQ.json (?)

KRRNvKQ dependencies

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

KRRNvK · KRNvKQ · KRRvKQ

KRRNvKQ.txt KRRNvKQ.dot