Currently you can't actually submit the puzzle to get a prize, but the UI is essentially done, there is clientside validation of your puzzle, and puzzles which have a solution are generated.
Coverage remained the same at 0.0% when pulling d0e15332b23909bc4e2a4c9e478fc40b85afb242 on games into 738e925556310e3ed0a63d7ba2c79e259eb9f1b8 on master.
Coverage remained the same at 0.0% when pulling b71ab05d08e07245a84fdadad1deda440553971e on games into 738e925556310e3ed0a63d7ba2c79e259eb9f1b8 on master.
Currently you can't actually submit the puzzle to get a prize, but the UI is essentially done, there is clientside validation of your puzzle, and puzzles which have a solution are generated.