This game is played on a board with 10 x 10 squares. The goal of the game is to create a line (horizontal, vertical or diagonal) on the board that contains one of each number (the sum of which equals 45, hence the name of the game). Each player has a rack with ten numbers on it. Each turn, he may take one of two actions: 1) Draw a new tile, and: a) Place a tile from his rack on the board, and add the newly drawn tile to his rack, or; b) Place the newly drawn tile on the board; 2) Take a tile from the board and replace it with a tile from his rack. Whenever a tile is placed on the board, it may not be placed in a row that already contains the same number. The round ends when a player manages to complete one row on the board (or two, in a two player game) while also having completed 'row' on his rack. All players now score points, and a new round starts. The game continues until a agreed-upon number of rounds has been played, or an agreed-upon score is reached. Home page: http://www.gameof45.com/