The basic rules are very similar to pexeso. Jettons are placed on the playing area with the black and white side on top. The color side of the jettons is facing down and therefore covered. The principle of the game is to find two jettons that are identical on the color side. The game package contains several difficulty variants. These differ mainly in number of jettons used in the game and in playing time. Initially, we recommend playing lighter variants, especially if children are learning the game. Game variants are described below.
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Multiplication table group
Multiplication table group
Jettons from this group have a multiplication factor on the black and white side and a multiplication product of these factors on the color side. The color side always contains a number on a gray background.
Example: A player turns over jetton number 5 and discovers number 10 on the color side.
5 is thus the first multiplication factor with product 10. The next jetton to be turned is number 2, the second multiplication factor. In other words 5⋅2=10.
Following this method players find pair jettons from the Miltiplication table group. For the youngest of us who don't know numbers yet, we invented a helpful color ruler, the use of which is explained below.
Power groups
Power is a special case of multiplication, in which we multiply given number by the same number. Formally, the procedure is the same as for the Multiplication table group. Practically it is even easier.
Jettons from this group always have a base number on the black and white side and a power on the color side. The color side always contains a monochrome number on a circular background.
Example: Example: A player turns over number 3 and discovers number 9 on the color side.
3 is therefore the base number and 9 is the power. Thus, the next jetton to be turned is also number 3. In other words 3²=9.
Alternatively, the color ruler can be used as well, although it is not necessary because players always turn over two identical numbers.
Prime number groug
Prime number is a number that only has two factors: itself and 1.
Jettons from the prime number group always have the same number on both sides. The color side contains a black number on a yellow background.
Example: A player turns over a jetton with number 5 and discovers also number 5 on the color side.
The next jetton to be turned is also number 5. The player is looking for the black five on yellow background.
Fibonnaci numbers group
Fibonacci numbers are numbers from a sequence, where each subsequent number is the sum of the previous two.
Jettons from the Fibonacci number group always have the same number on the black and white side as on the color side. The color side contains a black number on an orange background.
Example: A player turns over a jetton with number 5 and discovers also number 5 on the color side.
The next jetton to be turned is also number 5. The player is looking for the black five on orange background.
Note that jettons with a given numerical value on the black and white side can belong to more than one group. Only after turning the jetton over can be decided to which one. See example of fives belonging to prime numbers/Fibonacci numbers.
Factorial group
Factorial is a mathematical operation denoted by an exclamation mark and means that a given number is multiplied by all smaller natural numbers up to one. For example 5!=5⋅4⋅3⋅2⋅1=120
Hereby we remind that children don't need to know anything we describe here to play Mathesso. All they have to do is orient themselves according to the graphics.
Jettons in the factorial group have either a number or an exclamation mark on the black and white side and the result of the factorial operation on the color side.
Example: A player turns over a jetton with number 5 and discovers number 120 on the color side.
5 is therefore the number to which the factorial operation is applied (little 5! on the jetton serves as a hint). As soon as factorial group jetton is recognized, the next jetton to be turned is one of !.
Under the jettons with exclamation mark ! only the results of factorial operation are hidden.
Zero group
Jettons from the zero group always have a number on the black and white side and a zero on the color side. Moreover, there is another translucent number on the color side, which corresponds to the number on the black and white side.
Example: A player turns over a jetton with number 21 and discovers zero on the color side with translucent 21 in the background.
The next jetton to be turned is also number 21.
Note: The following black jettons 19,17,19,23,29,31,41,43,71$ are not used.
Note: The following black jettons with translucent 12 are different, so they do not make pairs in either case.
Cooper-Janeček extension (CJV)
Cooper-Janeček extension (CJV)
Jettons from the CJV group are an extension of higher variants of Mathesso.
Example: A player turns over a with the number 12 and discovers number 21 on the color side. CVJ jettons always have a yellow-blue background on the color side.
The next jetton to be turned is 2121, which has number 1212 on the color side.
CJVs are the only combinations where numbers on the color side of the associated jettons are not completely identical. The digits of the numbers are reversed.
Points for combinations from multiple groups
If a player has more than one pair with the same numerical value, the points for these pairs are added up and multiplied by the number of pairs with this numerical value.
Example:
21 and 21
Thus, the player receives 2 points for a pair in Fibonacci number group and 2 points for a pair in Multiplication table group. That makes 4 points. Since these pairs have the same numerical value on the color side (both have number 21 on the color side), the points obtained are multiplied by two which equals 8 points in total.
Příklad:
16 and 16
Thus, the player gets 3 points for a pair in Power group and 2 points for a pair in Multiplications table group. Since these cards have the same numerical value, the sum of the obtained points is multiplied twice, ie (3+2)⋅2=10. In total, the player gets 10 points.
This rule does not apply to factorials and CJV pairs.
Zero group pairs do not add points per se,but multiply the number of points for certain other pairs that have the same number on the color side as is the translucent number in the background.
Example:
21 and 21
Thus, the player receives 2 points for a pair in Multiplication table group and 0 points for a pair of zeros. However, these zeros have translucent number 21 in the background, which means that the points multiply twice for every other pair with the numerical value 21, ie (2+0)⋅2=4 points.
For example, if a player got a pair of zeros with translucent number 11 in the background, that pair would multiply another pair with number 11.
A player who gets two pairs in a given variant (so-called Sheldon) with CJV gets 12 points and one extra move at any time during the game.
The color ruler is used for orientation when searching for pairs from the Multiplication table group. No knowledge of mathematics is required to use it. Orientation is purely based on colors.
Example: A player turns over number 7 and discovers bicolor number 21 on the bottom.
Lets now use the color ruler to find the second multiplication factor of product 21. Each number has a color assigned to it on the ruler. One is pink, two is red, three is orange, seven is light blue, etc. To find the factors, we will do the following:
The package contains several game variants, which differ in their difficulty and playing time. We describe these game variants below.