Collection: Cross Sum
A cross sum is a number puzzle that involves filling a grid with numbers. The puzzle typically consists of a grid of empty squares, often arranged in a pattern of rows and columns. Each row and column has a label that indicates the sum of the numbers to be placed in that row or column.
The objective of a cross-sum puzzle is to fill in the grid with numbers, usually from 1 to 9 (similar to Sudoku), in such a way that:
- Each number appears only once in each row and each column.
- The sum of the numbers in each row and column matches the given labels.
To solve the puzzle, you need to use deductive reasoning and logic to figure out the correct combination of numbers that satisfies these conditions. It's a math-based puzzle that requires both math skills and puzzle-solving skills.