Colored XOR CMY XOR spells

Goal: make Your board match the Target exactly (shape and color). You place tetromino stamps. Stamping uses XOR (toggle): stamping the same CMY color on a cell twice cancels it back.

Color = 3-bit CMY state per cell. Each cell stores three on/off bits: Cyan (C), Magenta (M), Yellow (Y). A stamp flips exactly one bit (C or M or Y) over its footprint.
- One bit on: pure C/M/Y
- Two bits on: mix (C+M, C+Y, M+Y)
- Three bits on (C+M+Y): shown as dark/black
- Zero bits: empty/paper

Overlaps matter because XOR flips bits: if a cell already has Cyan and you stamp Cyan again, Cyan turns off.

Difficulty Grid

Moves

Move limit

—

Keyboard (only the essentials; no duplicates):
I O T S Z J L pick a piece • R rotate piece • 1/2/3 choose Cyan/Magenta/Yellow • U undo last stamp • Y redo • H toggle mismatch hints • C check match status.
(No keyboard shortcuts for Reset, New, or Solution to avoid conflicts.)

Colored XOR CMY color puzzle

Pick a piece (I/O/T/S/Z/J/L), pick a color (1/2/3), hover, click to stamp.

Mismatch: — Level: 1 Recipe: —

1 Study the target

Target

2 Choose a stamp

Drag to the board · or tap to select

3 Choose a color and stamp Same color twice cancels

Moves: 0 / —

Colored XOR · Designed by nefinia

1. Pick a shape

2. Choose a color

3. The XOR toggle rule

4. Combine different channels

5. Match exactly

1. Choisis une forme

2. Choisis une couleur

3. La règle de l’interrupteur XOR

4. Combine les canaux

5. À l’identique

1. Elige una forma

2. Elige un color

3. La regla del interruptor XOR

4. Combina canales

5. Idéntico

Colored XOR CMY XOR spells