Ouroboros
Please don't look at the source code for this puzzle. (This note is not part of the puzzle.)
Belly of the Ouroboros
According to local legend, the Ouroboros once had feet, but can now only run lengths along the ground on its belly. (That can't be very efficient.)
(13 6! 4 2 7 5! 2 5 4 9 9 8 9 3 2 5 3 4 5 10, 5 6 6 4 2 3 7 2 3! 2 4 6 3 12 10 4 10 6, 3 3 4 3 5 6 2 4 9. 2 2 3 6-6 4 12. 9 2 7-7, 3 8 4 ("11") 2 7 2 "1 6 3 2 6 5 2 5 2 8 3 5 2 9 2 9". 4 2 8 7 1 3'1 7 1 8 4 4.)
Feeder number:
Available feeders: 1 to 5,618.
Eyes of the Ouroboros
According to local legend, the Ouroboros has five eyes that each blink periodically. When all its eyes are closed at once, the world will end.
Feeder number:
Available feeders: 1 to 2,000,000.
Fangs of the Ouroboros
According to local legend, the Ouroboros's fangs grow steadily. Periodically, the fangs skip the start of their growth cycles. It's said that those who fathom the growth of the fangs will gain great wisdom.
Feeder number:
Available feeders: 1 to 300,000.
Heart of the Ouroboros
According to local legend, the Ouroboros's heart beats on forever, sometimes falling, sometimes rising; those who are able to follow its path are greatly rewarded.
Feeder number:
Available feeders: 1 to 100,000.
Scales of the Ouroboros
According to local legend, within each of the Ouroboros's scales is another world, encircled by its own Ouroboros.
Feeder number:
Available feeders: 1 to 10,000.
Skin of the Ouroboros
According to local legend, the Ouroboros's skin is long and wide enough to contain almost every word ever written.
A < 10 < 1 < 5 < 9 < 12 < 3 < 2 < 7 < 4 < 6 < 13 < 11 < 8 < Z
↓
1 2 3 4 5 6 7 8 9 10 11 12 13
Feeder number:
Available feeders: 1 to 267,738.
Tongue of the Ouroboros
According to local legend, the Ouroboros's tongue has two powers.
(4)
Feeder number:
Available feeders: 1 to 13,266.
Defeating the Ouroboros
According to local legend, the Ouroboros is desperately gluttonous, finding the earliest possible opportunity it can feed on itself.
A = 1; Z = 26; AA = 27; AAA = 703