How to play “OSO”

Set up

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Players

OSO is a game for 2 players from 5 years old.

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Required objects

Pen and paper.

Create the grid

We recommend starting to play with an 8×8 grid, but you can try with larger or smaller grids.

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Who’s first?

Let the more experienced player go first, then take turns in the following rounds.

Goal of the game

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Objective

The goal is to create the word OSO as many times as possible.

OSOS rules: playing a game

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Type S or O

The player whose turn it is can write an S or an O on any of the empty squares.

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OSO

If the letter you have just written together with two other letters already written form the word OSO, horizontally or vertically, you can circle the word to score a point and also continue with your turn by writing a new letter. You might even chain several OSO in a row during the same turn!

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NO OSO

If your letter doesn’t complete an OSO — or you missed it! — your turn ends and it’s the other player’s go.

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Next turns

Players will alternate their turns playing always with the same mechanics.

Forgotten OSO

If a player has not realized that he has completed a OSO and passes the turn to the other player, they can start their turn by circling the word and claiming the point.

This can be done with any OSO that is written and has gone unnoticed perhaps for several turns, but can only be done by the player who has the turn at the time.

Game over – who takes the crown??

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End of game

The game ends when there are no empty squares left.

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And the winner is…

The player who has managed to create the word OSO the most times wins.

Tips for playing “OSO”

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Two colors

To distinguish the OSOs of one player from those of the other, the ideal is to use two different colors, one for each player.

If this is not possible, then each player will mark their OSOS differently, e.g. one player may circle the word and another cross it out.

Variants

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Also diagonally

A more difficult variant also allows the word OSO to be written diagonally.

Games like “OSO”

OSO is a more interesting and difficult evolution of the classic Tic-tac-toe, of which we propose some very interesting variants, even for team play.

Conecta 4 is a commercial game with a mechanic very similar to OSO that is played vertically.

Conecta 4

You can find it in stores specialized in board games, although the best price and the best offers are usually on Amazon.

🇺🇸Amazon USCheck price on amazon.com
🇨🇦Amazon CACheck price on amazon.ca

LOODENS rating

A perfect game to enjoy with your son, your grandpa, your partner, your neighbor… whoever’s up for a fun challenge!. All you need is a pencil and paper, a little concentration and a lot of motivation to win. If you have outgrown Tic-Tac-Toe, try OSO and you are guaranteed many more hours of fun.

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❤️ Acknowledgements: thanks Fer for letting us know about this game.

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