Problem 11297:
Problem 11297:
        
            C. Norton (2071) - C. Doran (1987)
8th 4NCL Congress 2016 Wakefield ENG, 2016.04.03 Norton - Doran, Wakefield 2016
    8th 4NCL Congress 2016 Wakefield ENG, 2016.04.03 Norton - Doran, Wakefield 2016