Using only \+ (no cuts), modify the tic-tac-toe example of Section XXXXXXXXXXso it will generate only one candidate move from a given board position. How does your solution compare to the cut-based...

Using only \+ (no cuts), modify the tic-tac-toe example of Section 12.2.5 so it will generate only one candidate move from a given board position. How does your solution compare to the cut-based one (Example 12.22)? Prove the claim, made in Example 12.19, that there is no winning strategy in tic-tac-toe—that either player can force a draw.