Integer Connect Four

Two players.

Each player needs a unique colored pencil, pen or highlighter.

Each player selects a number at the bottom of the board and places a paperclip on that number, so that two integers are marked.

Players take turns choosing and moving one of the two paperclips to any integer on the bottom of the board.

Mark the sum of the two numbers on the board. If the sum appears more than once on the board, choose ONE square to mark.

The first player to mark 4 in a row wins the game!