https://bugs.kde.org/show_bug.cgi?id=478808
--- Comment #2 from lc...@april.org --- > To be sure I understand well the issue, let's assume: G = Green, B = Blue, Y > = Yellow and the solution of the next examples is GBG. > > Actual: > > the user inputs GYY, there will be 1 black peg and 1 white pegs (as the > > last correct one is G and it's already placed at the beginning). > > For me, this behaviour is correct (as we expect the G to be at 2 positions). Well, EXAMPLE #2 on page 3 of https://www.pressmantoy.com/wp-content/uploads/2018/01/Mastermind_rules.pdf shows a similar example and says there should be only one black peg (actually red in that edition of the game). I believe it is the rule for all the board games named "Mastermind". GCompris uses that name. I would be in favor in changing the rule in GCompris (and the name of the activity) if that feedback was illogical... but it looks logical to me. Applying your proposal to level 8 would actually make the feedback incoherent with that of level 4. At that level too, two code pegs can be of a same color. If the child only uses that color once and correctly guesses one of the two positions, then, after pressing "OK", the background at that position becomes black (not half black and half white) and, accordingly, there is one single black peg at the right (not one black peg and one white peg, as in level 8). > > the user inputs YGY, there will be only 1 misplaced token. > > For me, here we should display two white pegs (else the child does not know > it should be placed twice). In the board games, a two-peg feedback means two of the code pegs that have just been played are in the solution. If both key pegs are white, then each of those two code pegs is at an incorrect position. So, getting two white pegs after playing YGY would indicate that Y must be in the middle and that G is either first or last (but not both: there is a third color). With your proposal, GY* and *YG remain possibilities and G*G becomes an additional possibility. I tend to believe (but I have not done the math, using information theory) that, in general, your proposed way to give a feedback gives less information. That the game actually becomes harder. -- You are receiving this mail because: You are watching all bug changes.
