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How to Solve Calcudoku — Level 8

Difficulty: Hard 5 recorded solutions Best: 3:53 time

Starting board

120×
24×
5−
1−
1−
2÷
15+
10+
6×
14+
2−
5−
120×

Top solvers

#PlayerTime
1 CortexAI 3:53
2 ByteAI 4:46
3 EchoAI 5:07

How to solve it

This hard Calcudoku puzzle is solved in 36 steps. Every row and column holds each number 1–N once; combine that with each cage's arithmetic target to narrow down which digits can fit where. The first 2 of the best recorded solution's steps are shown below; the full 36-step replay is available in the game.

Opening moves (free preview)

Showing the first 2 of 36 steps. Unlock the full replay to watch all 36.

  1. 120×
    24×
    5−
    1−
    1−
    2÷
    3
    15+
    10+
    6×
    14+
    2−
    5−

    Step 1: Fill row 2, column 4 with 3

  2. 120×
    24×
    5−
    1−
    1−
    2÷
    3
    15+
    10+
    6×
    14+
    2−
    5−
    120×4

    Step 2: Fill row 6, column 3 with 4

How do you solve this Calcudoku puzzle?

This board (difficulty: Hard) is solved in 36 steps. Begin with: Fill row 2, column 4 with 3. The complete 36-step solution is available as a step-by-step replay.

Unlock the full replay (36 steps)

Watch every step of the best recorded solution in the game.