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Position Sums Sudoku (977)

Instruction:
Apply classic sudoku rules. External clues give information relating to the first two digits (called A and B) in the corresponding row or column. Clues next to the grid give the sum of A and B. Clues in the grey band further outside the grid give the sum of the digits in positions A and B.

Reference: WPF (1)

Examples:
WPF Sudoku GP 2021 - Round 5 (161)
Parent puzzle:
Frame Sudoku
Related puzzles:
Descriptive Pairs Sudoku
Position Sudoku