Notes on this puzzle
Kakuro #5412 is a 11×11 field with 66 white cells split into 34 runs: 20 across and 14 down.
12 of the 34 runs can be filled with only one set of digits:
- 4 in 2 → 1 + 3
- 6 in 3 → 1 + 2 + 3
- 7 in 3 → 1 + 2 + 4
- 23 in 3 → 6 + 8 + 9
- 16 in 5 → 1 + 2 + 3 + 4 + 6
- 28 in 7 → 1 + 2 + 3 + 4 + 5 + 6 + 7
The longest run is 7 cells long and 2 runs have only two cells, which is where the arithmetic is tightest. Clue totals go from 4 up to 38, with an average of 19.4.
Where to beginA good first target is the cell at row 1, column 11 of the field: the two runs crossing there settle it. On a field this size, keep notes on the long runs and recheck them whenever a crossing cell is filled.