I think you misunderstood the challenge. The #2 and #3 shouldn’t have the possibility of being extended, otherwise the problem is cooked.
Don't get that. Solutions can always be extended as long as you maintain a winning position. To 365 moves if you like!
The #2 line 1. c3 ~ 2. c4# can be extended to 1. c3 ~ 2. e3 3. ~ c4# for example. My point is that that shouldn’t be possible via how the Albino challenge works. For example, here is a 3/4 Albino that works “properly.
This is total abacadabra to me. For instance. the #1 in your first pickaninny can be extended by delaying the checkmate by playing a bishop move. And mate on move 2 by playing Nxf7#. How is that not extending?
This is total abacadabra to me. For instance. the #1 in your first pickaninny can be extended by delaying the checkmate by playing a bishop move. And mate on move 2 by playing Nxf7#. How is that not extending?
Oh, this doesn’t apply to the Pickaninny-just the Albino.
Thought they were the same except for the color.
Still its'weird as far as I can see, since there is no specification on how far the extension may go. Is the max duration 4? That would mean that the #4 variation is always correct because extending to #5 falls beyond the limit.
Yes, the max duration is #4.
I prefer the type you used for the pickaninny. This is a bit too weird for me. Are people on Mat Plus doing this stuff?
Yes, that is what we have tried so far. You’ll find the topic easily via the title.
One day I'll figure out how Mat Plus works.
I guess that implies that if you solve the #3, then you aren't allowed a #2, even if blacks counterplay permits it. You must extend to 3 moves no matter what. Theoretically that would mean that you need not play any move that requires checkmate in 3 moves; 2 moves would be totally OK, as long as you succeed in artifically extending it to 3 moves (but not to 4). In extreme cases, 3 of your 4 albino moves could be #2 problems but some can be extended against blacks will to last 3 or 4 moves depending on the albino move played.
That would be logically consequent.
Well the point is that each move of the pawn results in a different length mate. And I’m the one who started the entire challenge on Matplus, so the “rules” were somewhat set by me.
Yep, I assumed that 
. Look at your albino version. In the #4, white plays 2. Bh3. Now black could play 2. ...Kxe4! permitting white to mate him with 3. Rxe6# but then the checkmate is not exactly in the prescribed no of moves. Or white could play 3. Ng7/c7 and checkmate black on the next move. Which is correct according to your rules?
Well Black still plays optimally! so poor Black defense doesn’t count. And if 3. Nc7/g7?! then 3... Kf6! Although, there is some debate in the forum is poor Black defense constitutes a cook to the #3, something something “exact mates.”
3 ... Kf6 is impossible because the king is on e4 at that point!
Apparently I start understanding the rules since I synchronize with the debate! But this is precisely what strikes me as illogical. Poor black defense does not count to refute the exact mate count but poor white play (extending the checkmate) is permissable to invalidate the whole white albino line. It's asymmetrical.
As announced, here is your pretty efficient albino. Each problem has at least one dualfree line. The #4 is beautiful!
I think you misunderstood the challenge. The #2 and #3 shouldn’t have the possibility of being extended, otherwise the problem is cooked. Your #2 and #3 lines can be extended, while mine can’t be. The only problem with mine is that the #4 isn’t an exact mate (excluding the promoted piece.)