TicTacToeReflect
I assume you know the rules of TicTacToe...
Given this TicTacToe gameboard in progress, can you:
 Determine who played first?
 The sequence of moves thus far?
 What the best next move should be?
 Who should win the game?
Given this TicTacToe gameboard with an evident winner, can you:
 Determine who played first?
 The sequence of moves thus far?
 Could the win have been prevented
Extension: With a friend, play a game of TicTacToe...but stop after 6 moves. Give the gameboard to another friend to see if they can determine who moved first.
Big Question: Is it possible to find a sixmove gameboard where it is impossible to determine who started first?
Hint: Jump in...play...and reflect...
Solution Commentary: Start with anymove...and say "If this was first play, then..."
Note: You have assume that the moves were made in a "thinking" manner!
