How to Use Blindtrainer to Practice Blindfolded Solving

Blindtrainer is a free web trainer for Rubik's Cube blindfolded solving, focused on drilling commutators and algorithms in 3-style. To use it, pick a training category (such as Corners, Wings, or XCenters), work through the cases it presents, and use the built-in stats, streak counter, and customization options to track and steer your progress. It suits solvers who already know a blindfolded method and want repetition on specific case types rather than a full solve simulator.

What Blindtrainer Is Built For

The site describes itself as a trainer for commutators and algorithms for blindfolded solving, with practice for "3-style for corners, edges and more." That means it is a drill tool, not a timer or a scramble generator for full solves. You use it to repeat individual cases until the recognition and execution become automatic.

The homepage lists these training categories with case counts:

The case counts tell you how much material each category covers. Corners at 378 cases and Wings at 506 cases are large sets, while Floating Flips at 66 cases is a small, focused set you can finish quickly. If you are new to the trainer, starting with a smaller category gives you a faster sense of how the drill loop works before you commit to a large set.

Basic Training Workflow

1. Choose a category. Select the case type you want to drill — for example Corners if you are working on 3-style corner commutators, or Wings if you are training edge wings.
2. Work the case. The trainer presents a case; you solve it using your blindfolded method.
3. Check your result. The trainer gives feedback on whether the case was handled correctly.
4. Repeat. Cases continue until you stop or finish the set.

The exact on-screen controls for submitting an answer are not documented in the available page content, so treat the first few cases as a calibration run: note what input the trainer expects and how it confirms a correct or incorrect result before you try to train at speed.

Tracking Progress: Streak and Stats

Blindtrainer keeps several running numbers on the page:

• Streak — shown as "Streak: X X," a consecutive-correct counter.
• Total cases trained — cumulative count across your sessions.
• Time spent training — total practice time.
• Most cases trained in 1 day — your single-day record.

These four numbers serve different purposes. Streak measures consistency within a session and is the number to watch when you are pushing accuracy. Total cases trained and time spent training measure volume over time. Most cases trained in 1 day is a personal record that can motivate a longer session, but it is a raw volume figure — a high one-day count with a low streak means you drilled a lot while making repeated errors.

A practical way to use them together: set an accuracy goal first (keep the streak alive), then let volume grow as a byproduct. If your streak keeps breaking at the same point in a category, that category needs slower, more deliberate work rather than more repetitions.

Customization Options

The page exposes several settings that change how cases are presented:

• Accent Color — changes the visual accent used in the interface.
• Speffz — the standard lettering scheme for blindfolded solving, used for labeling sticker positions.
• Custom — a toggle alongside Speffz, suggesting you can use a non-standard lettering setup.
• Letter labels — the page lists a full set of three-letter position labels (UBL, UBR, UFR, UFL, LUB, LUF, LDF, LDB, FUL, FUR, FDR, FDL, RUF, RUB, RDB, RFD, BUR, BUL, BDL, BDR, DFL, DFR, DBR, DBL, UB, UR, UF, UL, LU, LF, LD, LB, FU, FR, FD, FL, RU, RB, RD, RF, BU, BL, BD, BR, DF, DR, DB, DL). These correspond to corner and edge sticker positions.

If you use Speffz, leave the scheme as-is so the labels match the letter pairs you already memorize. If you use a different lettering system, the Custom option is where you would align the trainer with your own scheme — mismatched labels are a common source of confusion when starting out, because you end up translating between two letter sets instead of drilling recognition directly.

Data Management: Sync, Import, Export, and ID

Blindtrainer includes tools for moving your progress between devices or sessions:

• Sync Data — keeps your training data synchronized.
• Import and Export — move your data in and out.
• Your ID — a field showing "[id here]," with an Update my ID button.

The ID is the key to your synced data. If you train on more than one device, set the same ID on each so your stats, streak, and case history follow you. Export before a hard reset if you want a backup — the page also has Reset and Hard Reset buttons, and a hard reset is the one to treat carefully since it clears more than a soft reset.

There is also a Slow Cases option, which suggests the trainer can surface cases you handle slowly so you can target them specifically. That is the most direct route from raw volume to actual improvement: instead of drilling the whole category evenly, let the slow cases get extra repetitions.

Maximizing Your Training

• Drill one category per session. Mixing Corners and Wings in the same block splits your attention between two recognition systems.
• Use Slow Cases as your priority queue. Cases you solve slowly are the ones costing you time in a real blindfolded solve.
• Watch the streak, not just the total. A long streak at a moderate pace beats a high case count with frequent errors.
• Export before resetting. The Reset and Hard Reset buttons are destructive; an export is cheap insurance.
• Set your ID before you accumulate stats. If you add it later, earlier sessions may not be tied to your synced profile.

Cost and Support

The site states that donations "ensure the website stays 100% free" and "help cover maintenance costs," with contributions accepted via PayPal or a bank account. No pricing page, subscription tier, or payment platform for paid access appears in the available content, so there is nothing indicating a paid plan — but the absence of pricing signals is not itself a statement about terms, and any future change would come from the site, not from this description.

Where to Start

If you are opening Blindtrainer for the first time: set your lettering scheme (Speffz or Custom), enter your ID if you plan to train across devices, then pick a small category like Floating Flips (66 cases) to learn the drill loop. Once the loop feels natural, move to the category that matches your current weakness — Corners, Wings, or XCenters — and let the streak and Slow Cases features decide what gets repeated.