basic copy of game with JS and simple "ai" func to attempt to compute sensible moves
NOTE: All credit for the game concept to Easybrain! (https://play.google.com/store/apps/details?id=com.easybrain.block.puzzle.games&hl=en_GB&gl=US)
TIP: Run in chrome
Choose given next shapes by clicking relevant buttons, then play the game in browser by clicking selected shape onto the grid
OR click "Eval selected" to compute decent positions for selected shapes