Click to expand Tap to zoom Smart Brain | Celtic Knot Puzzle by Smart Brain Sold in Units of: 6 Current stock: 442 Sale SKU SB-2000 6 12 18 24 30 36 42 48 54 10+ Quantity Quantity Add to cart The Celtic Knot Puzzles is a set of 8 puzzles consisting of 52 cards. These aesthetically beautiful puzzles will delight puzzlers of all ages.