I have very hardly managed to do the puzzle on mobile. Tips:
* If you select a piece and misplace it, you can't select it again. Long press on that piece and tap 'reset'. Now you can select it again.
* When placing pieces, select one, then press the top left square of the position you want to place it.
* Sometimes, when you want to place a piece, it selects an already placed one instead. To fix this, long press where you want to place it and select 'place' (the default is 'select').
03-Jul-2021 07:40:30