Centennial, also known as Ohio and Martinetti, is a game played with three dice and requires a small board with 12 numbered squares. Player will need to record their positions on this board by using either counters, initials or assign each player a coin to be used as a marker.
The goal of the game is to move from 1 to 12 and then back to 1 on the board. This is achieved by rolling numbers which add to the value, in sequence. Each player takes it in turns to roll three dice and moves to each square accordingly. To move to space 1, the player must roll a 1 in their throw, in order to move to square 2, the roll must also contain a 2 or have two 1’s.
The value of any single die, the sum of tow and the sum of three can be used to move up the board.
A player can move more than one place in any single turn by using more than one combination of dice values.
If a player on their first turn rolls a 1, 2 and 4 – they can use the 1 to move to position 1, the 2 to move to position 2; they can then add the 1 and 2 to move to position 3 and the 4 takes them to position 4. Additionally, they can then add the 1 and 4, to move to position 4, then the 2 and 4 to move to position 6 and finally add the 1, 2, and 4 to move to position 7.
A player who is not rolling, is also able to move if the rolling player overlooks a number they require. In this case, any other player which needs the number can move to the relating position.
If the first player rolls and their move ends on 6, then the second player rolls a 1, 2 and 4 (like the example above), but fails to see that they can use the 1, 2 and 4 to move to position 7 – the first player can then claim that 7th position.
The winner of the game is the first player to make a round trip from position 1 to 12 and then back to 1.
Any player who moves their marker on their roll, is allowed to roll again. If they successfully move their marker again, they can roll again.