Round 4: Acosta Cruz, Oscar Yosimar - Mar Armstrong, Sergio · Round 4.1

Acosta Cruz, Oscar Yosimar · 1–0 · Mar Armstrong, Sergio

Jun 13, 2026 · C66 · Ruy Lopez: Berlin Defense, Improved Steinitz Defense

White

2091 EloFIDE 5111269

Black

1606 EloFIDE 29689325

PGN

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Acosta Cruz, Oscar Yosimar vs Mar Armstrong, Sergio · Round 4: Acosta Cruz, Oscar Yosimar - Mar Armstrong, Sergio Jun 13, 2026 · Chesscope