hacker.org

If there's a stack of blocks on the edge of the grid, and you push into it, what happens?

Normally one block would vanish and the others would move one square - but because it's the edge of the grid, would all the blocks vanish, or is the move illegal? Or is it guaranteed that this will never come up, due to the way the boards are constructed?

the whole stack will disappear.

the boards are designed for this not to happen, but not guaranteed so. in other words, you should never have to push off the edge to solve a board.

adum