It's called 'LUCKY' builder, so it might be ok that you need good timig rather than thinking, (Levels 8 - 10, then I stopped), but I dont really like it.
I found why firefox didn't load: I have NoScript for Firefox, and there I had to allow dropbox.com to make the game load. (That is not the same thing I mentioned before)
Great to hear! Yes, the game is uploaded to dropbox, so Firefox might give some warnings.
Also, added a fix for the accidental clicking of Back button. And one more puzzle too :)
Suggestion: If all pieces are on the board it might be nice if you have to confirm that you want to leave. I clicked on 'back' instead of 'done' two times.
@hoikneusen&Knights unguard: Yes, you are right. I had so much problems with the 6x6 until I just counted the number of knights. Then it is easy to see.
For me it doesn't load with firefox, I have to use Opera. (It asked me if dl.dropbox.com is allowed to save some date for offling use, but that didn't help). But The game seems to be nice though.
Thanks for the comments. Will put the Clear button on the todo. The game is supposed to work offline as well as online (hopefully it does work too :) ) - that's why Firefox gives a warning about storing offline data.
Cheers!
If you want to do a rochade(?) it is a bit irritating [for me] that you have move the king onto the tower instead of making a 2-step-move, though it is logical, too. It took some time for me to see the red square under the tower.
 "Lucky Builder"){kind=icon}
 "Boom, Pirates!"){kind=icon}
 "Hambo 2 : Hambtouchables"){kind=icon}
 "Ninja Bear"){kind=icon}
 "Chess Logic Puzzles"){kind=icon}
 "Chess"){kind=icon}
 "Kingdom Rush"){kind=icon}
 "enDice"){kind=icon}
 "Making Monkeys"){kind=icon}
Great to hear! Yes, the game is uploaded to dropbox, so Firefox might give some warnings. Also, added a fix for the accidental clicking of Back button. And one more puzzle too :)