thx for your feedback.
Indeed, theres potential for other playstyles with other pieces. For the start i wanted to do it minimal, but working and "complete". Didnt have the time to put everything in. ^^
Wrongly placed pieces blocking the board, is intentional. Part of the puzzle experience. Need to think ahead, how to "store" pieces that doesnt fit. this, as well as the gradually increasing speed, are part of the difficulty.