Rule number or transform:

Number of iterations:

Notes:

• Transform is a three-digit number.
• Each of the three digits must be from 0 to 7.
• Digit 0-3 means rotation by 0,90,180,270 degrees.
• Digit 4-7 means vertical flip followed by rotation of 0,90,180,270 degrees.
• First digit is transformation of upper-left; second for upper right and third is for lower third.
• The resulting rule is also shown graphically in bottom right.
• There is a total of 8^3=512 different rules, although some of them produce the same patterns.

Try using arrow keys to slide.