MASTER PUZZLES - for puzzle masters. This series was created for true enthusiasts. For all those who have already completed almost every puzzle imaginable. Here, it's not primarily the sheer number of pieces that counts. It's the quality and beauty of the particularly challenging designs that make every puzzle fan's heart beat faster. MASTER PUZZLES thus represent the quintessence of the jigsaw puzzle: small, exquisite, and wicked. Stay on top with MASTER PUZZLE 1: The Boat.