Tic Tac Toe -Noughts and cross

Play two-player XO board game

무료

1.2for iPhone, iPad and more

Softnoesis

Developer

28.7MB

Size

Mar 27, 2024

Update Date

Puzzle

Category

Age Rating

App Store 개발자 웹사이트

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Tic Tac Toe -Noughts and cross 스크린 샷

iPad

iPhone

About Tic Tac Toe -Noughts and cross

Synonyms of this game name:
- Tick-tack-toe, tic-tac-toe, tick-tat-toe, or tit-tat-toe (United States, Canada)
- Noughts and crosses or naughts and crosses (United Kingdom, Republic of Ireland, Australia, New Zealand, South Africa, Zimbabwe)
- Exy-ozys, xsie-osies (verbal name only) (Northern Ireland)
- Xs and Os (Egypt, Republic of Ireland, Canada, Zimbabwe)

More detailedly, to guarantee a draw, O should adopt the following strategies:

If X plays corner opening move (best move for them), O should take center, and then an edge, forcing X to block in the next move. This will stop any forks from happening. When both X and O are perfect players and X chooses to start by marking a corner, O takes the center, and X takes the corner opposite the original. In that case, O is free to choose any edge as its second move. However, if X is not a perfect player and has played a corner and then an edge, O should not play the opposite edge as its second move, because then X is not forced to block in the next move and can fork.
If X plays edge opening move, O should take center, and then follow the above list of priorities, mainly paying attention to block forks.
If X plays a center opening move, O should take the corner, and then follow the above list of priorities, mainly paying attention to block forks.

When X plays corner first (best move for them), and O is not a perfect player, the following may happen:

If O responds with a center mark (best move for them), a perfect X player will take the corner opposite the original. Then O should play an edge. However, if O plays a corner as its second move, a perfect X player will mark the remaining corner, blocking O's 3-in-a-row and making their own fork.
If O responds with a corner mark, X is guaranteed to win, by simply taking any of the other two corners and then the last, a fork. (since when X takes the third corner, O can only take the position between the two X's. Then X can take the only remaining corner to win)
If O responds with an edge mark, X is guaranteed to win, by taking center, then O can only take the corner opposite the corner which X plays first. Then X can take a corner to win.