perplexus.info :: Logic : Locksmith

Locksmith (Posted on 2008-12-19)

K, the Key, is to be moved to contact L, the Latch, so as to move it totally into the grey area.

Locked



K	→	L	→

Open



					L


	1		3
	2		8	9	10
K	→	5				L	→
4			6		11
		7

The object again is to move K to dislodged L. The "tumblers", the numbered blocks, are only to slide in the direction of their respective lengths.

How might you accomplish this?

Note: the black areas are void space.

Submitted by brianjn

No Rating

Solution: (Hide)

In some instances it is irrelevant as to which "tumbler" moves first. Where one is offered such a choice the following notation:
|x|
|y| indicates that either may be the first of a pair to move.

I note 2 general solutions but there is another requiring "7" to be moved twice and thus is not as efficient as either of the following:

|1| |6| |8| |2| 5 |K| 4 7 |9| K 5 3 10 K |1| |6| |8| |2| 5 K 4 |7| |9| K 5 3 10 K
One could legitimately consider the possibility of moving the [1,2], [6,7] and [8,9] in unison when they present as an option if such a mechanism existed in the real world.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re: No solution yet? Spoiler alert...	Charlie	2008-12-22 14:51:14
No solution yet? Spoiler alert...	Terrato	2008-12-22 05:13:20
re(4): Any mistake? (possible spoiler) - I forgot the 6	pcbouhid	2008-12-20 16:07:32
re(3): Any mistake? (possible spoiler) - I forgot the 6	Charlie	2008-12-20 13:21:28
re(2): Any mistake? (possible spoiler) - I forgot the 6	pcbouhid	2008-12-20 08:28:31
Worried	brianjn	2008-12-20 06:04:32
re(2): Any mistake? (possible spoiler)	Daniel	2008-12-20 03:30:44
re: Any mistake? (possible spoiler)	Charlie	2008-12-19 17:59:31
re: Any mistake? (possible spoiler)	Elisabeth	2008-12-19 17:47:45
Any mistake? (possible spoiler)	pcbouhid	2008-12-19 14:50:12

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