Box Canonicalization of a Grid

1. Select the chute with the lowest canonical value

Use Box Canonicalization of a Floor on the 3 floors and the 3 towers.

The best way to do this is to use rotations and floor-swapping to put the chute to test in the position of the top floor. When executing box canonicalization, relabel all digits in the grid and swap whole columns and towers when needed. This keeps the 2 lower floors in sync with the floor being tested.

2. Order the rows of the lower 2 floors for the best result from the previous step

Order rows 4-6 on by the value in column 1.

Order rows 7-9 on by the value in column 1.

Order floors 2 and 3 by the value in r4c1 and r7c1

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