Score: 10
"Logic, nice"
date: October 31, 2009
I found it very exciting ^^
The 5 tries you have can be quite useful if you USE(abuse) them the right way, not saving them ^^
Solving the expert levels i used the most evident logic patterns to get a quick bunch of right locations, then i deducted which positions would give me most new spots to nail if i gambled one of my 5 tries. Doing this i solved the last stage in the first go in 2mins and 43 secs.