Four puzzles in one
From our UK edition
Four puzzles in one, composed by Werner Speckmann, 1963. In each case, White to play and mate in two. (a) As in diagram; (b) In (a), move Qh7 to a7; (c) In (b), move Ke6 to c6; (d) In (c), move Ke4 to c4. We regret that there is no prize for this puzzle, owing