CalcuDoku puzzle 23 - Hard CalcuDoku 9x9

Posted on April 14, 2015

CalcuDoku puzzles are logic puzzles that are an ideal brain training.

How to play CalcuDoku: The goal of CalcuDoku is to fill the grid in with the numbers 1-N (N is the number of rows/columns in the grid) such that: * Each row contains exactly one of each number. * Each column contains exactly one of each number. * Each bold-outlined group of cells (cages) contains numbers which achieve the specified result using the specified mathematical operation (+, -, ×, ÷). Sometimes the sign +, -, × or ÷ is omitted, in which case you also need to find the correct sign. * Numbers may repeat within a cage.