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  2. Pyramorphix - Wikipedia

    en.wikipedia.org/wiki/Pyramorphix

    At first glance, the Pyramorphix appears to be a trivial puzzle. It resembles the Pyraminx, and its appearance would suggest that only the four corners could be rotated. In fact, the puzzle is a specially shaped 2×2×2 cube. Four of the cube's corners are reshaped into pyramids and the other four are reshaped into triangles.

  3. Pyraminx - Wikipedia

    en.wikipedia.org/wiki/Pyraminx

    Pyraminx in its solved state. The Pyraminx (/ ˈ p ɪ r ə m ɪ ŋ k s /) is a regular tetrahedron puzzle in the style of Rubik's Cube.It was made and patented by Uwe Mèffert after the original 3 layered Rubik's Cube by Ernő Rubik, and introduced by Tomy Toys of Japan (then the 3rd largest toy company in the world) in 1981.

  4. List of open-source software for mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source...

    It has a compatibility mode with Maple, Derive and MuPAD software and TI-89, TI-92 and Voyage 200 calculators. The system was chosen by Hewlett-Packard as the CAS for their HP Prime calculator, which utilizes the Giac/Xcas 1.1.2 engine under a dual-license scheme.

  5. Drew Brads - Wikipedia

    en.wikipedia.org/wiki/Drew_Brads

    He also formerly held six world record Pyraminx averages from 2014 to 2017. [9] Brads also held the North American record 3x3x3 solve, 4.76 seconds, set on 4 March 2017 at Bluegrass Spring 2017. [9] Brads is a 3-time US national Pyraminx champion, winning in2014, 2015, and 2017, and 2-time world Pyraminx world champion, winning in 2013 and 2017 ...

  6. Gilles Roux - Wikipedia

    en.wikipedia.org/wiki/Gilles_Roux

    Over a span of years, Gilles Roux developed his own method to solve the 3x3x3 cube. Using a smaller quantity of memorized algorithms than most methods of solving, Roux still found his method to be fast and efficient. The first step of the Roux method is to form a 3×2×1 block.

  7. Optimal solutions for the Rubik's Cube - Wikipedia

    en.wikipedia.org/wiki/Optimal_solutions_for_the...

    And in 2014, Tomas Rokicki and Morley Davidson proved that the maximum number of quarter-turns needed to solve the cube is 26. [3] The face-turn and quarter-turn metrics differ in the nature of their antipodes. [3] An antipode is a scrambled cube that is maximally far from solved, one that requires the maximum number of moves to solve.

  8. God's algorithm - Wikipedia

    en.wikipedia.org/wiki/God's_algorithm

    However, draughts with only 5 × 10 20 positions [21] and even fewer, 3.9 × 10 13, in the database, [22] is a much easier problem to solve –of the same order as Rubik's cube. The magnitude of the set of positions of a puzzle does not entirely determine whether a God's algorithm is possible.

  9. Combination puzzle - Wikipedia

    en.wikipedia.org/wiki/Combination_puzzle

    3x3x3-7. Solutions to this cube is similar to a regular 3x3x3 except that odd-parity combinations are possible with this puzzle. This cube uses a special mechanism due to absence of a central core. Commercial name: Crazy cube type I Crazy cube type II Cube: 4x4x4. The inner circles of a Crazy cube 4x4x4 move with the second layer of each face.