Balance every row and column sum, but never let active cells touch orthogonally.
Score0
Puzzle1
Time90.0s
🏆 Best0
Hit every row and column target exactly.
Active cells cannot touch up, down, left, or right.
SUM
10
50
40
140
60
40
140
60
50
10
Each puzzle starts blank. Lock only the cells you need.
Start the shift, then match every row and column target before time runs out
🏆 TOP 20
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Ledger Lock — Play Free Online
HOW TO PLAY
- Press Start Shift to begin a 90-second run.
- Each puzzle shows a 5×5 board of values, with target sums above each column and beside each row.
- Tap cells to activate them. Active cells add their value to both that row and that column.
- Clear the puzzle by matching every target exactly while keeping active cells from touching orthogonally. Each clear loads the next ledger immediately.
ABOUT
Ledger Lock is a single-screen logic puzzle built around visible information instead of hidden tiles. You are balancing row and column totals while respecting a spacing rule, so each decision affects two sums and the shape of the remaining solution. That makes it feel closer to fast deduction than arithmetic drills. Your best seal count is saved on your device, and strong runs can be submitted to the global TOP 20 leaderboard.