Friends

Four boys, Albert, Karl, Dietrich and Friedrich, have last names similar to their first names. It's also known, that neither last name of each friend matches to his first name. Dietrich's last name is not Albert. Boy's first name, having last name of Friedrich, matches to last name of a boy, whose first name matches to Karl's last name. Try to figure out, who is who.

	Albert	Dietrich	Friedrich	Karl
Last name

Your name:

List of Winners

Name	Date	# of attempts	Time spent
Данил Юрьевич	10/31/2012 03:01:51	1	00:17:55
ксю	11/25/2009 07:31:13	2	04:53:30
naira	10/02/2009 14:11:14	1	00:04:01
Serggo	07/31/2009 15:25:29	2	00:07:10
Uzimga	12/25/2008 22:52:16	2	00:03:46
Uzim	12/23/2008 02:50:33	2	00:10:59
Kostya	07/22/2008 19:37:42	3	00:10:59
VladStar	07/22/2008 15:11:03	1	00:13:34

Statistics

Visitors	Attempts to solve it	Winners	% solved	% cheated	Total time spent	Average time
2675	15	8	53	46	06:01:54	00:45:14.2500

This riddle was taken from this link.

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