Nice Idea for a game, although I have to say that the only real challenge was in timing the explosives, not the placement of them at all. Perhaps if you were only given just enough bombs to blow the bridge, or sometimes not enough to completely destroy it, it would add another layer of difficulty and could easily expand levels.
Slider puzzles are fun. Its nice to be able to interchange them from anywhere on the board. It would be nice if there was an option to 'unselect' a selected tile - perhaps by clicking it again. Also, if there was some sort of pre-warning letting you know that the tile will let you know when you get it in the proper place.
I love these games. It's nice to have to think about puzzles in a different way. Uniqueness is somewhat hard to find in games these days .... I mean, how many different ways can a tower defense game be engaging and original?
 "Bridge Tactics"){kind=icon}
 "Hidden Hints-Vampire"){kind=icon}
 "Swappers"){kind=icon}
 "Take Something Literally 2"){kind=icon}
 "Smiley Face shooter"){kind=icon}
 "Stick Kill 2 Part 1"){kind=icon}
 "Twin Escape"){kind=icon}
 "Libra"){kind=icon}