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November 2018 - Challenge
There are 10 possible strings of three different letters from the five-letter "alphabet" ABCDE: ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCE, BDE and CDE.
The 16-letter string "ABECDEABDECADCBA" contains, as consecutive three-letter sub-strings, an anagram of every one of these 10 strings.
There is a shorter string (13 characters long) that satisfies the same condition.
Your challenge, this month, is to find a string of no more than 270 letters that contains, as consecutive five-letter sub-strings, an anagram of all the possible strings of five different letters from the ten-letter "alphabet" PONDERTHIS.
We will post the names of those who submit a correct, original solution! If you don't want your name posted then please include such a statement in your submission!
We invite visitors to our website to submit an elegant solution. Send your submission to the ponder@il.ibm.com.
If you have any problems you think we might enjoy, please send them in. All replies should be sent to: ponder@il.ibm.com
Challenge:
31/10/2018 @ 12:00 PM EST
Solution:
02/12/2018 @ 12:00 PM EST
List Updated:
03/12/2018 @ 12:00 PM EST
People who answered correctly:
Andreas Stiller (31/10/18 11:25 PM IDT)
Bert Dobbelaere (01/11/18 10:46 AM IDT)
George Lasry (02/11/18 09:35 PM IDT)
Justin Fletcher (03/11/18 03:01 AM IDT)
*Hermann Jurksch (03/11/18 09:23 PM IDT)
Michael J Swart (03/11/18 09:26 PM IDT)
*Eden Saig (04/11/18 12:03 AM IDT)
Hugo Pfoertner (04/11/18 06:54 PM IDT)
Florian Fischer (04/11/18 11:48 PM IDT)
Daniel Bitin (06/11/18 12:45 AM IDT)
Kang Jin Cho (07/11/18 07:19 PM IDT)
*Florian Fischer (09/11/18 10:18 PM IDT)
David Greer (10/11/18 08:42 PM IDT)
Alper Halbutogullari (13/11/18 08:38 AM IDT)
Arthur Vause (14/11/18 11:04 AM IDT)
Alexander Daryin (15/11/18 11:10 PM IDT)
Mathias Schenker (16/11/18 03:04 PM IDT)
Anders Kaseorg (18/11/18 10:21 AM IDT)
David Stevens (21/11/18 10:25 AM IDT)
Deron Stewart (21/11/18 09:19 PM IDT)
Nyles Heise (23/11/18 03:13 AM IDT)
Jingran Lin (24/11/18 03:47 PM IDT)
Deane Stewart (24/11/18 07:00 PM IDT)
Boris Rakús (25/11/18 12:58 PM IDT)
Dario Serino (26/11/18 11:31 AM IDT)
Thomas Egense (27/11/18 06:35 PM IDT)
Andreas Knüpfer (28/11/18 02:52 PM IDT)
Marcel Caria (29/11/18 03:11 AM IDT)
*Oscar Volpatti (29/11/18 08:34 PM IDT)
*Li li (30/11/18 09:23 AM IDT)
Pål Hermunn Johansen (30/11/18 04:46 PM IDT)
Oleg Vlasii (30/11/18 07:20 PM IDT)
Radu-Alexandru Todor (01/12/18 02:20 AM IDT)
JJ Rabeyrin (02/12/18 03:37 PM IDT)