Draw cages, input sums, and solve killer sudoku with one click
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💡 How to use:
1. Under "Draw Cages", click cells to multi-select (click again to unselect).
2. Enter target sum and click "Bind Cage". Switch to "Erase Cage" to remove an existing cage.
3. To fill pre-existing clues, switch to "Input Givens" and select a cell to enter value.