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J Perm helps new and experienced cubers learn to solve Rubik’s Cubes and improve their speedsolving. Beginners can follow step-by-step 3x3 instructions, while more experienced solvers can study CFOP, finger tricks, advanced techniques, and methods for 2x2, 4x4, one-handed, and blindfolded solving. ([jperm.net](https://jperm.net/)) The site also provides algorithm references and practice trainers for methods including OLL, PLL, and CLL. Trainers let you choose which cases to practice, track learning status and solve times, and use balanced or realistic case selection—useful for learning algorithms or reviewing them as part of regular practice. ([jperm.net](https://jperm.net/algs/oll))
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