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Pedro Calcudoku: A Brain-Teasing Math & Logic Puzzle Game


Pedro Calcudoku (also widely known as KenKen or Mathdoku) is an engaging, web-based mathematical logic puzzle game. Hosted by the friendly character Pedro, the game combines Sudoku's grid-deduction mechanics with arithmetic operations to deliver an intellectually stimulating experience for players of all skill levels.

Core Gameplay Mechanics

In Pedro Calcudoku, players are tasked with filling a square grid with numbers while adhering to row/column uniqueness rules and fulfilling targeted mathematical operations within designated grid sections called cages.

  • Sudoku-style Grid Rule: Each row and column must contain digits without any repetition.
  • Mathematical Cages: Outlined, color-coded groups of cells display a target number and an arithmetic operator (such as 6+ or 6*). The numbers entered into these cells must yield the target result using that mathematical operation.
  • Multiple Difficulty Levels: Features four distinct modes—Easy, Normal, Hard, and Expert—allowing players to adjust grid size and computational difficulty.
  • Interactive Tools: Built-in controls allow smooth number placement, erasing options, and a hint system for tricky scenarios.

Why It’s Great for Brain Training

By combining logic, rapid mental math, and deduction, Pedro Calcudoku serves as a rewarding daily exercise for the brain. The clean layout and scalable difficulty make it suitable for both casual gamers and dedicated puzzle enthusiasts.


Start playing the game by clicking the image below:

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