Take back and replay the same move!

Did you solve the famous retractor by T.R. Dawson? You had to retract White’s last move and then deliver a mate in two. And the solution? Take back the move h2-h4 and then play exactly the same move: 1.h2-h4! g4×h3 e.p. 2.B×g6#. Outrageous! Today we bring you a second instalment of solutions from our Christmas Puzzle Week. With retractors, reflectors, missing pieces and more. Hoping you like such out-of-the-box puzzles.