GDS 2020: Radim Jurda & Jan Chlup - The Making of Creaks 

Enormous work for such a small developer's team!! One Question. The game is perfectly polished in all its aspects including the puzzle design which is ingenious!! What method or techniques you have used to ensure that your puzzles solving are "deadlock" free? I mean, to ensure that puzzle solving does not go to a dead end by the gamer where it is stuck there and cannot be anymore solved? There must be hundreds of combinations that could result to a deadlock. Is there a mathematical algorithm or scientific method that would ensure that all deadlocks are prevented in puzzle design of the game?