space 34 the number 80 is obscured but the player must multiply correctly and announce the results if he should be wrong he does not get the tile and he loses his turn the player having the ace of hearts goes to the 11 numeral in the guide column 18 and he has to multiply 11 u00d7 11 before he picks up the tile which is in the square 35 which shows the number 121 this tile hides the number 121 and the player must say 121 lift up the correct tile to expose the number 121 permanently imparted to the board and then take the chip but if he multiplies incorrectly he cannot take the chip and loses his turn the crux of the game is that the player must multiply by 1 2 and 3 if he has spades whatever the value of his card is such as the six of spades he should pick up the tile in the correct square but if the six of spades has already been taken he can then go to cross row spade 2 and pick up the 12 tile the numbers in the squares other than the guide rows are products of the numbers of the vertical and horizontal guide rows these squares could also contain numbers in accordance with other mathematical relationships i e addition of the two corresponding numbers in the horizontal and vertical guide rows it has been found that just about all children are intrigued by cards and card games whether from the point of view of imitating their elders or aggressiveness or simply wanting to play a game to try to beat their companions even pupils who do not want to study or pay attention.