90.9% win chance lost
Wednesday 16 September
Biggest Blunder
The Lichess-marked blunder that cost the most winning chances.
Ties: board order.
Updated 28 Sept 2026, 16:38 CEST
Record
95.1% win chance lost
- Round 4, 57… Kc4, #−6 → +11.09Sina Tadesse Negi ETH 1447½againstWCM Daisy Simenda ZAM 1857½
- Round 6, 42. Kf1, #8 → −14.09Mary Salamatu Farmer SLE0againstCherry-Ann Benjamin ANT1
- Round 6, 41… h5, −10.93 → #8Mary Salamatu Farmer SLE0againstCherry-Ann Benjamin ANT1
4 more, tied
- Round 7, 34. Qf5+, +10.77 → −12.18Felicia Ngoua Oyane GAB0againstNicole Grant ANT1
- Round 8, 53… Kf6, #−8 → #4WCM Aamirah Beekhy MRI 15391againstSamiro Mohamed Ali SOM 15040
- Round 11, 70. Rxb4, #17 → #−19WGM Elmira Mirzoeva ENG 21810againstWFM Shania Mae Mendoza PHI 20761
- Round 11, 41. g4, #1 → #−3Kaellaa Fyfield-Jones Saint Kitts and Nevis0againstKristyna Elisee Ndam Ziza Gabon1
Round by round
94.6% win chance lost
Thursday 17 September
94.3% win chance lost
Friday 18 September
95.1% win chance lost
Saturday 19 September
92.9% win chance lost
Sunday 20 September
95.1% win chance lost
- 42. Kf1, #8 → −14.09Mary Salamatu Farmer SLE0againstCherry-Ann Benjamin ANT1
- 41… h5, −10.93 → #8Mary Salamatu Farmer SLE0againstCherry-Ann Benjamin ANT1
Monday 21 September
95.1% win chance lost
Wednesday 23 September
95.1% win chance lost
Thursday 24 September
94.2% win chance lost
Friday 25 September
93.7% win chance lost
Saturday 26 September
95.1% win chance lost
- 70. Rxb4, #17 → #−19WGM Elmira Mirzoeva ENG 21810againstWFM Shania Mae Mendoza PHI 20761
- 41. g4, #1 → #−3Kaellaa Fyfield-Jones Saint Kitts and Nevis0againstKristyna Elisee Ndam Ziza Gabon1
Sunday 27 September