PEA-ano Forte
The brief
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Split Peas: Digits on a line between two circles sum to a two-digit number written using the digits in the circles. For example, 3_346_1 could be a valid split pea line, as 3+4+6=13, which is 1 concatenated with 3.
- Up to N-sums: A clue outside the Row or Column N indicates the sum of all digits up to the cell that contains the digit N. (The digit N itself is not included in the sum.)