3x3x3 Rubik's Cube
I can solve a Rubik's Cube around 15 seconds using CFOP Method (23 seconds OH),
and 23 seconds using Roux Method (30 seconds OH). The following are the preferred algorithms.
CFOP Method Algorithms
F2L (First Two Layers) OLL (Orientation of the Last Layer) PLL (Permutation of the Last Layer) COLL (Corners of Last Layer)
Roux Method Algorithms