Play 3D Tower Sudoku (4×4×4) Online Free

Play Tower Sudoku 4×4×4 online for free. Four interconnected 4×4 floors — each column position is shared across all floors as a 'pillar'.

▶ Play Tower Sudoku 4×4×4 — Free
🟢 Easy 🟡 Medium 🟠 Hard 🔴 Expert

How to Play Tower Sudoku 4×4×4

  1. Four 4×4 Sudoku floors stacked vertically.
  2. Each floor follows standard mini-Sudoku rules (rows, columns, 2×2 boxes).
  3. PLUS: each 'pillar' (same position across all floors) contains digits 1-4 with no repeats.
  4. Floors are scrambled — solve using cross-floor pillar logic.
💡 Pro Tip
Think in 3D. If a pillar already has 1, 2, 3 on three floors, the fourth must be 4. Use pillar constraints to break deadlocks.

Frequently Asked Questions

How does a 3D Tower Sudoku puzzle work?

Four 4×4 Sudoku grids are stacked vertically. Each floor obeys mini-Sudoku rules, and every pillar (same row/column position across all floors) also contains 1-4 uniquely.

Why is it called a Tower?

Each shared column position across all four floors forms a vertical 'pillar' that must contain each digit exactly once — like a 4-story tower of digits.

Try More Puzzle Modes

🧩Tower Sudoku 6×6×6 🧩Tower Sudoku 9×9×9 🧩Mini Sudoku 4×4
▶ Play Tower Sudoku 4×4×4