CalcuDoku· Beginner

Goal

Fill each row and column with numbers 1 to N without repeats, while satisfying the arithmetic constraint in each cage (bold-bordered group).

Rules

  • Each row and column must contain numbers 1 to N exactly once.
  • Numbers in each bold-bordered cage must produce the target value using the specified operation (+, −, ×, ÷).
  • Single-cell cages show the answer directly.
3+1
2
1−2
1

Start with single-cell and two-cell cages to quickly narrow down candidates for other cells.

CalcuDoku simultaneously trains arithmetic fluency and logical reasoning. Tracking multiple constraints engages working memory under significant cognitive load.

  • Miyake et al. (2000) - Unity and diversity of executive functions
  • Noro & Noro (2012) - Arithmetic puzzles and mathematical reasoning