Conjecture is an alternative of the mastermind. You must find a combination of 5 symbols in 15 blows maximum. You start with the line top; propose your 1st combination while clicking on each box. By clicking one second time on the same box, you reveal the following symbol (5 symbols on the whole). Once the line filled, click on the arrow. In the column of right-hand side, the result is posted: the number of A corresponds to the number of symbols placed well compared to the combination to find and numbers it B with that of symbols present in this combination but badly placed.