Syzygy endgame tablebases

Black is losing with DTZ 120

Rh2+ Loss with DTZ 119

Kb4 Loss with DTZ 1 Kb5 Loss with DTZ 1 Kd4 Loss with DTZ 1 Kd5 Loss with DTZ 1 Rd4 Loss with DTZ 1 Re4 Loss with DTZ 1 Rf4 Loss with DTZ 1 Rg4 Loss with DTZ 1 Rh1 Loss with DTZ 1 Rh3 Loss with DTZ 1 Rxh5 Zeroing

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

KPPPvKRP.pgn lichess.org

Histogram: KPPP winning vs. KRP (log scale)

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Longest KPPPvKRP phases

KPPPvKRP statistics (unique positions)

White wins:
203,617,358,196 (27.7%)

Frustrated white wins:
7,833,306 (0.0%)

Draws:
50,465,581,572 (6.9%)

Frustrated black wins:
1,154,694 (0.0%)

Black wins:
480,468,552,024 (65.4%)

KPPPvKRP.json (?)