Sorry I was not clear.
After the pawns, number squares and/or numbers are dropped into their new location, the player might want to delete one or more of the newly placed pieces. Ideally he would select the newly placed piece or pieces, by holding down the ctrl key and clicking his left mouse button and then press the delete key.
Another question: I am using a slide show script to advance the questions on the board. I have to capture and save each new question as a jpg to add questions. Can you recommend a script that would use a text file to enter the list of questions. If I have math symbols like the "not equal" character, will the player be able to see the character on his machine? Is my slide solution the best way to solve this problem?