Figure series came in ASO 2012 (four), 2015 (four) and 2025 (five). Every series follows a few separate rules running at the same time. Find each rule on its own, then combine them.
Method
- Pick one element (an arrow, a dot, a line count) and follow it through all the figures.
- Write its rule: turns 45° clockwise, moves one corner anticlockwise, gains one line, and so on.
- Do the same for every other element.
- Apply all the rules once more. Rule out options element by element; usually one element alone removes two options.
Common rules
- Rotation: 45°, 90° or 135° clockwise or anticlockwise. The angle sometimes grows (45°, 90°, 135° …).
- Movement: a symbol moves round the corners or sides, one or two places at a time.
- Count: lines, dots or sides increase or decrease by one.
- Alternation: the figure flips back and forth, or two different rules alternate.
When a figure has a square border with 8 positions (4 corners and 4 side-midpoints), "one place" means moving to the next of these 8 positions.