TATAMI is a 6x6 grid logic game played with the numbers 1 to 3. Each 3x3 slab must contain all the numbers 1-3 with no duplicates. Adjacent slabs cannot contain the same number, i.e. the number 3 cannot be placed next to another number 3. Each row and column must contain a double set of numbers (two 1s, two 2s and two 3s).