## What is this game about?To use your mathematical skills to get more cards than your opponents. ## What do you need?A normal deck of cards. If there are many players, it is recommended that you mix more than one deck. ## RulesAll black cards in the deck count as "positive" (plus (+), times (×) etc.) and all red cards count as "negative" (minus (−), divided ( ÷) etc.). Ace is one (1), two (2) is two (2), three (3) is three (3), etc. Jack is 11, queen is 12 and king is 13. Black cards count as plus (eg 7 of clubs is +7) and red are minus (eg 7 of diamonds is −7) as default. This is stacked on top of each other. For example. 7 of clubs and 7 of spades is +14, and 7 of diamonds and 7 of hearts is −14. The goal is to combine the cards so that you get the number ten (10). You can combine cards precicely how you want, as long as the result is Jokers make "positive" and "negative" swap places with each other (red counts as black and vice versa). If you then play a new joker, it will be the other way around again (red becomes red and black becomes black again). You can do this for as long as there are jokers in the deck. The color of the jokers does not matter. There are three levels in the game (but you can also invent your own): - You only use plus (+) and minus (−).
- You use plus (+), minus (−), times (×) and divided (÷).
- All mathematical formulas are used.
## How to playShuffle the deck thoroughly. The pile of cards not yet used is called Give each player three (3) cards each, except the one who starts, who gets five (5). You don't show your own cards to each other. The cards in your hand are called one's The person who starts places two (2) cards of choice in front of them for all to see. That pile is called Then the player says The next player can choose to: - put one (1) of their own card in
*the pasture*, if they cannot collect ten (10), and say*"moo!"*. This is called to**do a moo**. Then they draw one (1) new card from*the farmyard*and it's the next player's turn. The placed card in*the pasture*can now be used by everyone (but only when it's one's own turn). - combine cards from
*the pasture*and one's*barn*to add up to ten (10). Then you say*"dek bovinoj!"*(which means*"ten cows!"*in Esperanto), and the player get all the cards that together add up to ten (10). This is called**making a dek bovinoj.**The stack of cards that you get through dek bovinoj is called one's**haystack.** Then the player draw new cards from*the farm*so they have three (3) in their*barn*(one must always have three (3) cards in their*barn*at the end of one's turn). After that, it's the next player's turn. Saying*"dek bovinoj!"*signals, just like with*"moo!"*, that one's turn is over. And just like with*"moo!"*you can never take back a*"dek bovinoj."* - combine some/all cards from
*the pasture*to make a dek bovinoj, without using the own cards from one's*barn.* - place a joker. If you do that, all the card colors will be reversed according to the rules above. Then the same player must do a moo or a dek bovinoj according to the rules above. You can only place one (1) joker at a time.
If you only have jokers, you have to place them one after another until your*barn*is empty and*do a moo*.
Each player may only do the above once (1) per round. This is repeated until all the cards in the The player with the most cards ## Terms
## Pieces of adviceA red and a black card with the same number (eg hearts queen and spades queen) cancel each other out (eg +12 and −12 become 0). Use that to your advantage! Try to combine the cards to get as many cards as possible! It is better with e.g. Putting "negative" cards in ## An example roundAdam, Sofia and Peter will play, and choose level 2. Adam starts and draws five cards. Adam can put both of his spades together to make a dek bovinoj, but since he's starting, he can't until his next turn at the earliest. So he puts the 9 of diamonds and the 3 of hearts into Now it's Sofia's turn. She looks at her Sofia is a little sour that there is a 3 of hearts in
Now there are three cards in It is now Peter's turn. He is really happy with the cards in his Peter points to his king of clubs and says:
Then he points to 2 of clubs:
He points to 3 of spades.
Wide-eyed, Adam and Sofia watch as Peter takes all the cards out of Now it's Adam's turn again, and the game can continue... ## RightsThe game was made by Johannes G. and Leo G., 2024. The rules for this game are licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC 🅭 BY- SA 4.0). You are free to: **Share**– Copy and redistribute the material in any medium or format for any purpose, even commercially.**Adapt**– Remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: **Attribution**– You must give appropriate credit,* provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.**ShareAlike**– If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.**No additional restrictions**— You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
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