Parker, Liam
1708316493
ISBN 13: 9781708316495
Softcover

84
ING9781708316495
Special order direct from the distributor

The puzzle a 12 x 12 grid made up of 3 x 4 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 12 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
Free ShippingOn orders $50 or more. North America only.Learn More