func NewTictactoe(prompter io.Prompter) (t *Tictactoe) {
board := game.NewTictactoeBoard()
rules := game.NewTictactoeRules(board)
players := player.NewTictactoePlayers()
t = &Tictactoe{board: board, rules: rules, players: players, prompter: prompter}
return
}
func NewAiPlayer(mark game.Mark, board game.Board, prompter io.Prompter) (player Player) {
rules := game.NewTictactoeRules(board)
player = &Ai{mark: mark, board: board, prompter: prompter, rules: rules}
return
}