Observed arrival · 2026-10-01

Rubik’s Trainer turns CFOP weak spots into drills

sub20cuber.com Visit website

Editorial interest 79/100 Selection signal · not a rating of the site

A 3×3×3 practice trainer pairs a CFOP case library with targeted drills, phase timing and progress tracking.

Landing page captured for the 2026-10-01 issue.

For: 3×3 CFOP solvers targeting sub-20 times
Worth noticing: The timer reports ao5, ao12 and ao100 with trimmed averages and DNF handling described as following WCA practice.

Field notes

The rating scale runs from 0 for “never seen it” to 5 for an algorithm that comes instantly to mind. The page says a solve share-link carries its full sequence, and training plans can combine drill blocks, reading and timed sessions before export. It credits the algorithms to Feliks Zemdegs and Andy Klise.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

⊠LoginAccess appeared gated

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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