1
Read the shape
Count digits to know the column count. 2d² (any).
Level 9 - foundation
6 visual blocks - Duplex columns
Count digits to know the column count. 2d² (any).
Write raw Duplex columns first.
Start with the leftmost Duplex.
Compare with a nearby square.
Use the quickest safe method.
Carry only after the columns are visible.
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