9.1.7 | Checkerboard V2 Codehs

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9.1.7: Checkerboard V2 is a fundamental test of your ability to manipulate 2D lists (nested lists) using nested loops and conditional logic. While V1 typically focuses on simple row replacement, V2 requires a precise alternating pattern of 0s and 1s across the entire grid. Core Logic: The Alternating Pattern The primary challenge is ensuring that if a cell at (row, col) is a 1, the adjacent cells (up, down, left, right) are 0s. The Modulus Trick 9.1.7 Checkerboard V2 Codehs