Tridoku puzzle 21 - Hard Tridoku

Posted on February 23, 2015

Tridoku puzzles are really fun brain games. This logic puzzle will give your brain a great exercise.

How to play Tridoku: Tridoku consists of nine large triangles. The numbers 1-9 must be placed into the triangular cells of each large triangle. The numbers 1-9 must also be placed in the three legs of the inner shaded triangle and in the three legs of the outer shaded triangle. No two neighboring cells may contain the same number.