After opening the game, wait until it loads in your browser then click on the flashing start button. Select the jigsaw you want to play and then the difficulty level (number of pieces). The game will open and re-arrange the jigsaw pieces. It starts with jigsaw rotation on, rotate pieces using mouse click/buttons - To switch this rotation feature off click on the rotation button at the bottom right of the game. Enjoy the jigsaw and have fun.
The original picture was taken by Rainhard Wiesinger who can be found on pixabay.