Difference between revisions of "Pyraminx"
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Spacecircles (talk  contribs) (one paragraph on the history ; on paragraph on the mathematics) 

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{{Puzzle Infobox  {{Puzzle Infobox  
NAME=Pyraminx  NAME=Pyraminx  
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INVENTOR=Uwe Meffert  INVENTOR=Uwe Meffert  
YEAR=1981  YEAR=1981  
−  COMPANIES=[[Cyclone Boys]], [[DaYan]], [[FanXin]], [[HeShu]], [[Meffert's]], [[Moyu]], [[QiYi]], [[QJ]], [[ShengShou]], [[Z]]  +  COMPANIES=[[Cyclone Boys]], [[DaYan]], [[FanXin]], [[HeShu]], [[Meffert's]], [[Moyu]], [[QiYi]], [[QJ]], [[ShengShou]], [[Z Cube]] 
TIME=From a few seconds to many years}}  TIME=From a few seconds to many years}}  
[[Image:pyraminx.jpg250pxthumbrightMefferts Original Pryaminx]]  [[Image:pyraminx.jpg250pxthumbrightMefferts Original Pryaminx]]  
−  '''Pyraminx''' is a triangular pyramidshaped (or tetrahedron) [[puzzle]]. The parts are arranged in a pyramidal pattern on each side of the puzzle. The layers can be rotated with respect to each vertex, and the individual tips can be rotated as well. It was designed by [[Uwe  +  The '''Pyraminx''' is a triangular pyramidshaped (or tetrahedron) [[puzzle]]. The parts are arranged in a pyramidal pattern on each side of the puzzle. The layers can be rotated with respect to each vertex, and the individual tips can be rotated as well. It was designed by [[Uwe Mèffert]] in the early 1970s. 
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+  In the early 1970s Uwe Mèffert experimented with slicing polyhedra into symmetric slices and attaching them with rubber bands to a center ball. His wooden puzzles eventually end up in a drawer halfforgotten. It was only when the [[Rubik's Cube]] craze hit in the early 1980s that Mèffert brought it to the attention of a toy company. Over 10 million pyraminxes were sold by Christmas 1981, and 90 million within 3 years.  
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+  The pyraminx is a tetrahedron trisected by planes parallel to each face. This means there are 4 axial pieces, 6 edge pieces, and 4 tips. The pyraminx can be arranged into 75,582,720 possible positions. This sounds a lot compared with the [[2x2x2 Cube]] which has 3,674,160 possible positions. However, solving the tips is trivial, and ignoring these reduces the possibilities to 933,120 positions. In addition, the axial pieces can be easily rotated so that their colors line up with each other, reducing the problem to just the six edge pieces with 11,520 possible positions. This makes the pyraminx one of the simplest of the twisty puzzles.  
+  
+  ==Variants==  
+  *'''Tetraminx'''. The simplest variant is the [[Tetraminx]] which is equivalent to the Pyraminx but without the tips.  
+  *'''Master Pyraminx'''. The [[Master Pyraminx]] is a 4layer pyraminx with and 16 triangles per face. It has about 2.17225 × 10<sup>17</sup> possible combinations.  
== See also ==  == See also == 
Revision as of 18:51, 22 August 2017

The Pyraminx is a triangular pyramidshaped (or tetrahedron) puzzle. The parts are arranged in a pyramidal pattern on each side of the puzzle. The layers can be rotated with respect to each vertex, and the individual tips can be rotated as well. It was designed by Uwe Mèffert in the early 1970s.
In the early 1970s Uwe Mèffert experimented with slicing polyhedra into symmetric slices and attaching them with rubber bands to a center ball. His wooden puzzles eventually end up in a drawer halfforgotten. It was only when the Rubik's Cube craze hit in the early 1980s that Mèffert brought it to the attention of a toy company. Over 10 million pyraminxes were sold by Christmas 1981, and 90 million within 3 years.
The pyraminx is a tetrahedron trisected by planes parallel to each face. This means there are 4 axial pieces, 6 edge pieces, and 4 tips. The pyraminx can be arranged into 75,582,720 possible positions. This sounds a lot compared with the 2x2x2 Cube which has 3,674,160 possible positions. However, solving the tips is trivial, and ignoring these reduces the possibilities to 933,120 positions. In addition, the axial pieces can be easily rotated so that their colors line up with each other, reducing the problem to just the six edge pieces with 11,520 possible positions. This makes the pyraminx one of the simplest of the twisty puzzles.
Variants
 Tetraminx. The simplest variant is the Tetraminx which is equivalent to the Pyraminx but without the tips.
 Master Pyraminx. The Master Pyraminx is a 4layer pyraminx with and 16 triangles per face. It has about 2.17225 × 10^{17} possible combinations.
See also
 Pyraminx notation
 Pyraminx Speedsolving Methods
 Pyraminx algorithms
 Pyraminx Crystal
 Meffert's Pyraminx
 QJ Pyraminx
 Category:Pyraminx solvers
External links
 Official Pyraminx scrambler
 Jaap's Pyraminx pages (the java applet found there can be used to find algorithms)
 Pyraminx in the Wikipedia