Friday, 27 May 2022

Solution to Sudoku no 658

Sudoku no 658 (Extreme)

This puzzle is at the lower end of the extreme category but I am still using it because, according to Andrew Stuart's grader and solver (see link below), the swordfish technique will help you to solve it. Our younger son created the puzzle using a Javascript program which he wrote himself:


Solve online

Sudoku grader and solver

See answer