Syzygy endgame tablebases

Black is losing with DTZ 110

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

KRRBvKR.pgn lichess.org

Histogram: KRRB winning vs. KR (log scale)

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Longest KRRBvKR phases

KRRBvKR statistics (unique positions)

White wins:
6,999,234,042 (85.3%)
Frustrated white wins:
58,627 (0.0%)
Draws:
1,192,835,879 (14.5%)
Black wins:
8,641,700 (0.1%)
KRRBvKR.json (?)

KRRBvKR dependencies

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

KRBvKR · KRRBvK · KRRvKR

KRRBvKR.txt KRRBvKR.dot