EXTREME Sudoku Puzzles - How to Solve - видео

Heres how to solve an EXTREME Sudoku puzzle from the Dell Totally Top Choice Sudoku book. This one is a moderately difficult puzzle from the medium section which must contain digits one thru nine on both diagonals. Some books refer to these puzzles as X-factor or X-treme. Have fun with it.,
Источник видео: RuTube.ru (Обучение)