Kakurasu ("Index Sums") is played on a rectangular or square grid. The goal is to blacken some cells to satisfy the clues. The numbers across the top and down the left are the clues, and equal the row and column totals for the black cells. The numbers across the bottom and down the right are the values for each of the cells in the rows and columns (the first cell in a row or column is worth 1, the second 2, the third 3, etc.).
Cross+A can solve puzzles from