Season’s greetings! Today, we have a Tridoku puzzle. In this Sudoku variation, fill in each large triangle with the numbers 1-9 with no repeats. Also, you may not use duplicates in the legs of the highlighted outer or inner triangles.
Oh no! A zombie horde is terrorizing the town! You must quickly build walls to keep them at bay! Draw walls to create regions that contain only people, or only zombies.
Place one tetromino in each region such that all of them are orthogonally contiguous, no tetrominoes of the same type are adjacent, and no 2×2 area of cells is covered.
