Syzygy endgame tablebases

Black is losing with DTZ 101

Re7 Loss with DTZ 5 Rd7 Loss with DTZ 3 Rg7 Loss with DTZ 3 Na6 Loss with DTZ 1 Na8 Loss with DTZ 1 Nb5 Loss with DTZ 1 Nd5 Loss with DTZ 1 Ne8 Loss with DTZ 1 Kd6 Loss with DTZ 1 Ke7 Loss with DTZ 1 Kf6 Loss with DTZ 1 Rf7 Loss with DTZ 1 Rh6 Loss with DTZ 1 Rh8+ Loss with DTZ 1

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

KQBBvKRN.pgn lichess.org

Histogram: KQBB winning vs. KRN (log scale)

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Longest KQBBvKRN phases

KQBBvKRN statistics (unique positions)

White wins:
365,268,815,524 (83.0%)

Frustrated white wins:
4,853,430,324 (1.1%)

Draws:
53,337,822,289 (12.1%)

Frustrated black wins:
11,705,712,773 (2.7%)

Black wins:
5,171,213,104 (1.2%)

KQBBvKRN.json (?)

KQBBvKRN dependencies

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

KRNvKBB · KQBBvKN · KQBvKRN · KQBBvKR

KQBBvKRN.txt KQBBvKRN.dot