Scope

Scope is a flip-and-write game played on a 6x6 grid of numbers. On each turn a card is turned over and each player may cross out one or more numbers than sum to exactly the number on the card; if multiple numbers are crossed out they must be adjacent. A player may skip a card if they wish. The cards are 1-20 but five are removed before the game. Once all fifteen cards have been revealed the player with the fewest numbers remaining on their grid is the winner. Two different grids are provided with the game and five more are available on the publisher's site.