Sudoku RGB

Fill a 9x9 grid with RGB symbols so every row, column, and box matches the same multiset.

Rules

• Each row must contain {1,1,1,2,2,2,3,3,3}.
• Each column must contain {1,1,1,2,2,2,3,3,3}.
• Each 3x3 box must contain {1,1,1,2,2,2,3,3,3}.
• 1, 2, and 3 map to ▲, ■, and ●.
• The RGB hint counts show the live total for each row and column.
• Pre-filled cells cannot be changed. Row and column over-quota conflicts are shown on the hint counts. Only 3x3 box conflicts highlight cell backgrounds.

Inspired by Ripeto.

Controls

Key	Action
Arrows / wasd / hjkl	Move cursor
Mouse left-click	Focus a cell
1 / 2 / 3	Fill cell with ▲ / ■ / ●
Backspace	Clear cell
Ctrl+H	Toggle full help
Ctrl+R	Reset puzzle
Escape	Return to main menu

Tips

• Count aggressively. Every house wants exactly three of each value, so once a row already has three ▲, the solved hint chip marks that value.
• Cross-check rows and boxes. Use the row and column RGB counts to narrow options before you look for box-only conflicts.
• Watch where errors appear. Hint-count errors mean a row or column is over quota; red cell backgrounds mean the problem is inside a 3x3 box.