Baby Steps
The brief
- Normal sudoku rules apply, i.e. each row, column, and 2x3 region has to contain the digits from 1 to 6 once each.
- Periodic Sums: A clue outside the grid indicates the sum of the first cell seen in its row/column and every Nth cell after, where N is the digit in the first cell. If for example r1c1 contains a 2, then the digits in r1c1, r3c1 and r5c1 have to sum to 7.