Fusion Confusion

Designed by Stewart Coffin, made by interlocking puzzles 2001.
(Paduak and Guatam, 4 pieces, 3.3 inches)

The four pieces of this puzzle are formed by joining two pairs of the six pieces of the Triumph puzzle. Triumph is described in Coffin's book The Puzzling World of Polyhedral Dissections, and this puzzle is described in his book Geometric Puzzle Design, where he says that it has all of the original four solutions of the original Triumph puzzle, but with "only one confusing diagonal axis of assembly". To make the star shape, first join two pairs, and then slide the two halves together: