Ripple Effect

Fill each cage with the digits 1 through the cage size, then keep equal digits far enough apart so their ripples do not collide.

Rules

• Every cage of size n must contain the digits 1..n exactly once.
• Equal digits cannot appear too close in the same row or column.
• A digit n blocks the next n-1 cells in each orthogonal direction from also being n.
• Given cells are locked. The puzzle is solved when every cell is filled and no cage or ripple rule is broken.

Controls

Key	Action
Arrows / wasd / hjkl	Move cursor
1-9	Place number
Backspace / Delete	Clear cell
Ctrl+H	Toggle full help
Ctrl+R	Reset puzzle
Escape	Return to main menu

Tips

• Finish the smallest cages first; they have the fewest possibilities.
• When a digit is placed, count outward in the row and column to eliminate matching values nearby.
• If a cage already contains a digit, that value cannot appear again in the same cage even if the ripple rule would allow it.