What does the Fix Position button do?
This is a bit of a cheat to help people whose brains can’t cope with working out what the consequences of putting a line or cross might be. It’ll turn all existing lines and crosses green and won’t allow them to be changed. You can then try out a move and see what happens, resetting back to the fixed position if it all goes wrong. ‘Un-Fix’ will turn the green lines and crosses back to black and allow you to change them again.
