谜题 23027:
谜题 23027:
Michael Stean (2540) - Ulf Andersson (2560)
Hastings 7980 (9), 1979 Michael Stean (2540) - Ulf Andersson (2560)
Hastings 7980 (9), 1979
Hastings 7980 (9), 1979 Michael Stean (2540) - Ulf Andersson (2560)
Hastings 7980 (9), 1979