Easy Summer Sudoku is perfect for beginner sudoku players or anyone just looking for a fun and easy sudoku game to pass their time! There are usually multiple answers that can be placed into the sudoku board at any time. Summer Sudoku is played by placing a number one to nine into each of the 3x3 boxes, columns, and rows only once. Complete each of the tiles in the summer sudoku pool board to win this game! To earn three stars for this sudoku game, you must move quick and complete the puzzle in under five minutes!
Source: http://www.summersudoku.com/