European Club Cup 2026

Biggest Blunder

The Lichess-marked blunder that cost the most winning chances.

Ties: board order.

Updated 18 Oct 2026, 21:31 CEST

Record

77.1% win chance lost

Round 2, 33. Bc5, +4.16 → −7.92Roko Petric CRO 19890againstFM Oleg Yaksin MNE 24011

Round by round

Round 1

47.5% win chance lost

55… Kg7, 0.00 → #14GM Eytan Rozen ISR 25091againstFM Muhamet Asllani KOS 22300

Saturday 17 October

Round 2

77.1% win chance lost

33. Bc5, +4.16 → −7.92Roko Petric CRO 19890againstFM Oleg Yaksin MNE 24011

Sunday 18 October