Human Thistlethwaite Algorithm

Human Thistlethwaite method Information about the method Proposer(s): Morwen Thistlethwaite Ryan Heise Proposed: 2002 Alt Names: HTA Variants: Thistlethwaite Algorithm No. Steps: 4 No. Algs: Advanced method: Hundreds, Basic method: 3 Avg Moves: Advanced method: 45.7, Basic method: ~100 Purpose(s): Fewest Moves

The Human Thistlethwaite Algorithm (abbreviated to HTA) is a human-usable version, proposed by Ryan Heise, of the Thistlethwaite's algorithm. The solution is broken down into exactly the same basic steps of the computer Thistlethwaite algorithm, but each step in the human version is broken down into further sub-steps to make it managable for a human solver. The system proceeds as follows:

1. Reduction to G₁ = <U,D,L,R,F2,B2>
   • Edge Orientation
2. Reduction to G₂ = <U,D,L2,R2,F2,B2>
   • placement of U/D edges in U/D faces
   • Corner Orientation, and placement
3. Reduction to G₃ = <U2,D2,L2,R2,F2,B2>
   • Corners
   • Edges
4. Final Solve
   Permutation of all pieces using only 180 degree faces turns

See also

• Category:Computer algorithms
• Orient First
• SSC
• HSC
• 3-Color Method

External links

• Ryan Heise's Thistlethwaite Tutorial
• YouTube: Human Thistlethwaite Algorithm Rubik's Cube Tutorial
• SpeedSolving.com: Human Thistlethwaite Help/Discussion