You can continue to play after the "This round" timer reaches 0, but will not be awarded any points for the solution. If you hit New without solving, you will get new numbers, but the timer will not reset. There is always at least one solution for any set of numbers shown.
For easier play, restrict the operations to addition and subtraction only.
Round 1 Total score: 0 This round: 100
Select maximum value: Select operations:
I was taught this game by a friend from Shanghai, who assures me it is extremely popular there. The numbers are selected by drawing from a pack of playing cards, with an Ace having value 1, and, if included, the Jack, Queen and King have values 11, 12 and 13 respectively.