⚡ Circuit Breaker

⚡ How to Play

Goal: Turn off all the glowing circuits on the grid.

Rule: Clicking a cell toggles it and its four neighbors (up, down, left, right). When you click a lit cell, it turns off — but its neighbors flip state too!

Controls

• Click / Tap a cell to toggle it and its neighbors
• Arrow keys to move the cursor, Space/Enter to toggle
• N — New puzzle   H — Hint   S — Solve
• M — Toggle sound   ? — This help

Scoring

• Par = minimum moves needed to solve the current puzzle
• Solve in par moves for a perfect score!
• Best scores are saved per grid size
• Levels increase in difficulty — bigger grids, more scrambled

Strategy Tips

• Work top-to-bottom: once a row is set, use the row below to fix it
• The last row requires a specific pattern — use Hints if stuck!
• Every puzzle is guaranteed solvable — it was created by toggling from an empty grid

The Math 🧮

This puzzle is a classic Lights Out game. Solving it uses linear algebra over GF(2) — arithmetic where 1+1=0 (XOR). Each click is a vector, and finding the solution means solving a system of equations. The "Solve" button uses Gaussian elimination to find the optimal solution!

Got it!