Federer, Colin2284Siva, Mahadevan24571-0

grenke Chess Open 2026 · Round 4.38 · 2026.04.04 · B90 Sicilian Defense: Najdorf Variation, English Attack · head-to-head →

Stockfish 18 Lite1 threads
on-device engine · eval graph, accuracy, blunders
Open in explorer←/→ moves · ↑/↓ variations · drag pieces to branch
Federer, Colin vs Siva, Mahadevan, grenke Chess Open 2026 2026 · Prep DB