Last week‘s puzzle was a Mate in 3:
White has to choose the correct way to release the stalemate, which is…
Black must reply:
Now Black has four choices, north east, north west, south east or south west (problemists call these star flights):
This last variation explains why White had to choose Rb1 on move 1. This is a Bristol clearance: the rook has to clear the b-file for the queen to travel in the same direction.
It’s White’s move. Your answers, please! I need full analysis, not just one move!