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Interlocking Burrs - High Level

There have been many, many multi-level burrs invented over recent years. And the speed at which they are being designed seems to have increased its seems with the advent of fantastic tools like BurrTools and more (huge thanks to Andreas Rover for his development of this OpenSource project). So we thought it would be good to separate these high level burrs on a page of their own.

Burrs are organised by level with the "easier" ones at the top .... bear in mind that absolutely none of the burrs on this page are easy .... it's all relative. Generally you would have to say a Level 4 burr is theoretically easier than a Level 30 burr but it will still be a hard puzzle!

Items 1 to 9 of 15 total

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Items 1 to 9 of 15 total

Page:
  1. 1
  2. 2

Grid  List 

The Burr puzzle, sometimes called the Knot or the Chinese Cross, and identified by a lot of people as Chinese, is not really Chinese at all.  Well, it might be, just that no-one really knows for sure.

Some historians believe the first burrs came about from Chinese joinery from about the 4th century BC. The technique the woodworkers used for making the corner connections in buildings has definite similarities to a standard burr puzzle although no documentary evidence of making a puzzle for recreation exists.

It is known for sure that it's one of the oldest mechanical puzzles in the world. The first documentation of the puzzle is not a physical puzzle but a depiction in the 1698 engraving by Sébastien Leclerc's called L'Académie des sciences et des beaux-arts. But probably there had to have been a physical puzzle made for that artwork to be taken from; possibly from China?

These burrs would have no doubt been basic designs compared to the our high level burrs on this page.

A level 13.3.5 solution means that it will take 13 moves to remove the first piece. Then only after this first piece has been successfully removed another 3 moves are needed to remove the second piece. Once that is done still 5 more moves will be needed to remove the third piece of the burr. Very difficult by any standards.

A move is considered to be a directional move. ie: moving a piece, and sometimes it is possible that more than one piece is moving at the same time, on a single axis in that direction. Other language we may use to describe burrs "false assemblies". This is when the pieces would theoretically fit together to make the object shape but there is no physical way of assembling them. This adds another dimension to difficulty ratings for these puzzles when puzzles are being reassembled. The Mega Six puzzle is a particularly good example of this.

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