Syzygy endgame tablebases

Black is losing DTZ 112

Ke3 Loss with DTZ 111

Kc3 Loss with DTZ 7 Kc4 Loss with DTZ 7 Kd4 Loss with DTZ 7 Rg8 Loss with DTZ 7 Rh8 Loss with DTZ 7 Rc8+ Loss with DTZ 5 Re4 Loss with DTZ 5 Re5 Loss with DTZ 5 Re6 Loss with DTZ 5 Ke4 Loss with DTZ 3 Rd8 Loss with DTZ 3 Re3 Loss with DTZ 3 Nc2 Loss with DTZ 1 Nf3 Loss with DTZ 1 Ng2 Loss with DTZ 1 Re2 Loss with DTZ 1 Re7 Loss with DTZ 1 Rf8 Loss with DTZ 1 Rxb8 Zeroing

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

KRRNvKRN.pgn lichess.org

Histogram: KRRN winning vs. KRN (log scale)

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Longest KRRNvKRN phases

KRRNvKRN statistics (unique positions)

White wins:
350,072,532,162 (74.8%)

Frustrated white wins:
482,410 (0.0%)

Draws:
115,904,109,986 (24.8%)

Black wins:
1,779,938,834 (0.4%)

KRRNvKRN.json (?)

KRRNvKRN dependencies

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

KRNvKRN · KRRNvKN · KRRvKRN · KRRNvKR

KRRNvKRN.txt KRRNvKRN.dot