Puzzle 270036:
Puzzle 270036:
Alan Keene - Ian Gao (2037)
4NCL Online S3 Div2 2020 lichess.org INT, 2021.02.23 Keene - Gao, 4NCL Online S3 Div2 2020 2021
4NCL Online S3 Div2 2020 lichess.org INT, 2021.02.23 Keene - Gao, 4NCL Online S3 Div2 2020 2021