Rubik’s Cube

The Rubik’s Cube is a 3x3x3 mechanical puzzle invented by Hungarian architect Erno Rubik in 1974 and popularized worldwide after Ideal Toy Corp’s 1980 launch. It has sold more than 450 million units and seeded an entire competitive discipline called speedcubing, governed by the World Cube Association. This article is a practical learning reference for solving the 3x3 quickly, centered on the CFOP method (Cross, F2L, OLL, PLL) that dominates modern records. It covers the puzzle’s history, Singmaster notation, the four CFOP phases with their algorithm counts, a realistic practice progression from first solve to sub-10, and a brief hardware and resources guide. Numbers that matter to remember: 20 for God’s Number, 41 F2L cases, 57 OLL cases, 21 PLL cases, 15 seconds of inspection, and 3.13 seconds for the current 3x3 single world record.

Topics

• History and Origins — Erno Rubik 1974, Magic Cube origins, WCA & world records
• Notation and Mechanics — Singmaster notation, faces/wides/slices, HTM/QTM/ETM metrics
• Solving Methods Overview — LBL, CFOP, Roux, ZZ, Petrus, Heise
• The Cross Phase — CFOP first phase, 8-move optimum, color neutrality
• F2L (First Two Layers) — intuitive vs algorithmic, 41 cases, primitive insertions
• OLL (Orient Last Layer) — full 57 algorithms, 2-look shortcut, Sune/Antisune
• PLL (Permute Last Layer) — full 21 algorithms, recognition via headlights
• Practice Path — LBL → sub-10 progression with typical weeks-to-reach
• Hardware and Resources — magnetic cubes, lube, tensioning, canonical sources