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.