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1
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2answers
412 views

What's the best strategy to win a tic-tac-toe variant on a 5x5-board?

First: We assume that every player is playing at its best Rules 5x5 board Player 1 begins and puts every turn one cross “X”. Player 2 puts every turn two circles “O”. They don’t have to be next to ...
0
votes
1answer
510 views

Is there a good second player tic tac toe strategy

I like serious board games. But my smaller children aren't there yet. One of them likes tic tac toe. The assumptions here are that your opponent will block whenever you could win on the next move, ...
7
votes
1answer
819 views

Name of this interesting variant of Tic-tac-toe?

A group of grad students and I regularly meet up at conferences. Often, we spend our coffee breaks between talks playing various suggested generalisations of common pen-and-paper games to see if we ...
7
votes
1answer
5k views

Is Ultimate Tic Tac Toe solved?

Ultimate Tic Tac Toe is an interesting variant of Tic Tac Toe where in each of the 9 fields, “regular” game of Tic Tac Toe is played; see the link for details. Has this game been solved already? ...
12
votes
3answers
2k views

First modern Naughts and Crosses/Tic Tac Toe?

When was Naughts and Crosses first released in its current form? I see there were Egyptian and the Roman versions, but these are very different games.
30
votes
1answer
2k views

What is the optimal strategy in Quantum Tic Tac Toe?

Quantum Tic Tac Toe is a variant of Tic-Tac-Toe with "entangled" states (there are even iPhone and Android apps). In essence, a classic naught or cross isn't placed until the 'quantum state' of the ...