Morning folks ... I'm stuck on the last 3 - can you help please?
2d bridge move which may be executed in a situation such as a Vienna Coup (7) u?b?o?k
4d thermodynamic quantity representing the measure of energy i a system whichis no longer available for doing a mechanical process (7) e?t?o?y
12d rarely executed move in chess (2,7) ?n ?a?s?n?
Many thanks, Chox.