Single-step and ten-step are disabled, how do I enable them?

A. These functions are disabled whenever trial-and-error is an allowed solving technique. This is because, with trial-and-error enabled, the grid could be left in an incorrect state after the allowed number of steps. To enable the single and ten step functions, disable trial-and-error (Actions -> Solving Techniques -> Trial and Error.)

What People Say

Just downloaded your program today - Very comprehensive and impressive. I've seen a number of Sudoku applications, for both PC and PDA. but never one as feature-rich and comprehensive as this one. This is a must for true Sudoku fans.
Houle Bækdal, Denmark
More …

No malware No spam
McAfee Site Report
Web of Trust