Flipover

"A Game of Memory and Strategy for Two To Four Players"

Flipover is a memory game for 2-4 players. Players take turns rolling
dice and flipping over numbered tokens. The goal is to flip tokens
that add up to the sum of the dice. Players that succeed keep all
tokens flipped during their turn; if a player fails any flipped tokens are flipped back over, allowing players to remember their location.

Players can challenge the player to their left to flip tokens adding
to a target number - the winner of the challenge keeps all tokens
flipped. Play continues until all tokens have been removed from the
board. The player with the most tokens wins.

The Flipover board is an 8x8 grid. Each circular token is colored
black on one side with a number from 2-6 on the other side. The game
uses two six-sided dice.