Sohei Sudoku Puzzles

Named after the warrior monks (Sohei) of feudal Japan, Sohei Sudoku is a variant of the classic Sudoku with four merged grids. The grids are merged in a way that they share some regions with each other, creating a larger, interconnected puzzle.

Each grid has two overlapping areas with adjacent grids, intertwining the solving process and making it dependent on the solutions of neighboring grids.

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About Sohei Sudoku:

Here's what makes Sohei Sudoku unique:

  • Four Intertwined Grids: The puzzle consists of four individual 9x9 Sudoku grids cleverly merged together.
  • Shared Territory: Each grid overlaps with two neighboring grids in specific regions. These overlapping areas become the key twist.
  • Double Duty Rules: The standard Sudoku rules (numbers 1-9 appearing only once in each row, column, and 3x3 box) apply to each individual grid. But in the overlapping areas, the digits must follow the rules for both grids they belong to.

This interconnection between the grids creates a more intricate solving process compared to regular Sudoku. You'll need to consider the implications of your placements across multiple grids simultaneously.