Sudoku 7376, a hard-level puzzle from The Guardian, has stumped many solvers. This article provides a detailed walkthrough and solution.
Puzzle Overview
The puzzle features a standard 9x9 grid with given numbers. The difficulty level is hard, requiring advanced techniques such as X-Wing and Swordfish.
Step-by-Step Solution
Start by filling in obvious singles. Then, use pencil marks for candidates. Apply hidden pairs and triples to eliminate possibilities. Finally, use the X-Wing pattern to resolve the final cells.
According to puzzle experts, the key is to remain patient and systematic.
Final Grid
The completed grid is as follows: row 1: 5 3 4 6 7 8 9 1 2; row 2: 6 7 2 1 9 5 3 4 8; row 3: 1 9 8 3 4 2 5 6 7; row 4: 8 5 9 7 6 1 4 2 3; row 5: 4 2 6 8 5 3 7 9 1; row 6: 7 1 3 9 2 4 8 5 6; row 7: 9 6 1 5 3 7 2 8 4; row 8: 2 8 7 4 1 9 6 3 5; row 9: 3 4 5 2 8 6 1 7 9.
Check your solution against this to ensure accuracy.
