Mannion, Stephen R2202–Riff, Jn2399½-½
42nd Cappelle Open 2026 · Round 8.16 · 2026.02.26 · C91 Ruy Lopez: Closed, Bogoljubow Variation · head-to-head →
Stockfish 18 Lite1 threads
on-device engine · eval graph, accuracy, blunders
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