Place the digits 1-6 once each in every row, column, and irregular region. Clues outside the grid give the sum of the first X digits in that clues row or column, where X is the digit in the cell next to the clue.
Place the digits 1-6 once each in every row, column, and irregular region. Clues outside the grid give the sum of the first X digits in that clues row or column, where X is the digit in the cell next to the clue.