Toroid Minesweeper — Custom

What is Toroid Minesweeper?

Toroid Minesweeper is a variant of classic Minesweeper played on a surface that wraps in every direction — the left edge connects to the right edge and the top edge connects to the bottom edge. Mathematically this forms a torus (donut shape), which is why it's called a toroid.

The consequence is that there are no borders anywhere on the board. Every single cell has exactly eight neighbors, including cells that appear to be in a corner or along an edge. This eliminates the easier deductions that border cells provide in classic Minesweeper, making the game consistently more demanding from start to finish.

How to Play

• Left-click a cell to reveal it. Empty cells (0) auto-expand through all connected empty neighbors, wrapping across edges as needed.
• Right-click to cycle a cell through flag (🚩), question mark (❓), and unmarked states.
• Double-click a revealed number to chord — if the right number of flags surround it, all remaining neighbors are revealed at once.
• The 😊 button resets to a fresh board. Your timer starts on your first click.
• Remember: all four edges connect. A cell in the top-left corner neighbors cells in the top-right, bottom-left, and bottom-right corners.

Difficulty Levels

• Easy — 9×9 board, 10 mines. A good starting point for getting used to full-wrap logic.
• Medium — 16×16 board, 40 mines. The uniform neighbor count starts to make deduction significantly harder than classic Medium.
• Hard — 16×30 board, 99 mines. Dense mine placement with no border relief — a serious challenge even for experienced players.
• Custom — Set your own rows, columns, and mine count for a fully tailored game.

Strategy Tips

• Forget the edges. Every cell has eight neighbors. Don't look for easy border deductions — they don't exist here. Treat every cell identically.
• Corner connections matter. A cell that appears to be in the top-right corner neighbors cells in the bottom-left region through the wrap. Track these cross-board constraints carefully.
• Cross-edge subsets. Two numbered cells on opposite sides of the board may share hidden neighbors through the wrap, enabling subset eliminations that are invisible on a flat grid.
• No Guess mode generates boards that are always logically solvable without any guessing. Use it to focus purely on deduction.
• Chord for speed. Once a number's mines are all flagged, double-click to reveal all remaining neighbors in one move and improve your 3BV/s.

Toroid vs. Other Variants

• Classic Minesweeper — flat grid with hard borders on all four sides; corner and edge cells have fewer neighbors.
• Cylinder Minesweeper — left and right edges connect, but top and bottom remain fixed borders.
• Toroid — all four edges connect (left↔right and top↔bottom); no borders, no corners, every cell has exactly eight neighbors.