Nautile
aka Charles Hamel's personal pages

PAGE 1

discreetly abstain from saying where they got the idea - make believe they invented the trick.

I want to state that this is something that stem from visiting web sites selling brain teasers

and puzzles.

Instead of wooden spheres*, or rather balls**, I use knoting. ( * & ** in proper language sphere is the area ands ball of globe is the volume as in "the globe of a breats"

-if they use a core then I would rather say the knottings are 'sphere' the knotting being the surface of the core, the 'ball')

There are many other 'traditional' models of brain teasers to adapt to rope and knots.

That will makes personalized amusing gifts for people around you.

Taking this 'string and ball' assembly how can you proceed so as to get this result ?

Geometrical constraints are that neither the turk's head knot nor the monkey's fist may go through the eye.

By now you should already have the solution.

Just in case you are lazy : here it is.

Accessory brain teaser : starting from the end result reinstall the puzzle for the next player.

LINKED TEASER

Taking any one of these two cordages assemblies can you :

- either in each one or in only one, separate, the two components of the linkage ?

- or prove trying 1000 times without success is no proof as the 1001 attempt could prove successful, same thing with any number of unsuccessful times) that it is impossible to separate the linked components.

Either with a topological or with a logical explanation. ?

Will this be of help or that ? Or that again ?

To help you here are their topological equivalent

Just for the fun : any topologist reading this, please send me a full formal "proof" to put on line here.

A good scan of a sheet of paper with your work will suffice. Thanks ahead of time.

MY TRICK WITH OVERHAND KNOTS

I found it while making cordage doodles.

Can you dispose a length of cordage in such a way that you will get two overhand knots of opposite orientation when pulling at once on both end ?

From that can you derive :

- other "knots" ?

(remember I am French : bend/hitch make no sense in my language we have only

'noeuds" / knots)

Here is a first slide show on how to do this.

Here is a second one.

There you will find some 'derived' knots that can be made using this trick.

TOPOLOGICAL KNOTS CAN BE REAL LIFE ONES

Will you be able in 5 seconds flat (6 seconds are still a good performance ;-) ) to identify this knot .

I am quoting this illustration from a site on Internet.

Here it is made with a 'real' cordage.

NEVER ENDING STORY ? :

What is this knot ?

Full answer is given here.

WILL YOU FIND IT IN ABoK (ASHLEY BOOK of KNOTS) ?

Here is the 'question' face and profile.

What is if any the ABoK # of this knot ?

All is said here.

*

A bit of a surprising knot : a patented fishing net knot.

Can you reproduce one ?

First cheat

Second cheat

Last cheat

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Copyright 2005 Sept - Charles Hamel / -

Overall rewriting in August 2006 . Copyright renewed. 2007-2014 -(each year of existence)

Url : http://charles.hamel.free.fr/knots-and-cordages/