onlinecube.com

The 3x3 is the cube most people mean when they say "the cube": 20 moving pieces that can sit in 43,252,003,274,489,856,000 different arrangements, yet every one of those arrangements can be solved in 20 turns or fewer. That limit is called God's Number, and researchers only proved it in 2010. Online 3x3 Cube (onlinecube.com) is built around this puzzle, and its simulator works with any 3x3 speedcube — an original Rubik's brand cube, a GAN, a MoYu, or the one that came free in a cereal box — because the method and the moves are the same regardless of brand.

The numbers worth knowing before you start

Two facts explain why the cube feels impossible and why it isn't:

• 43,252,003,274,489,856,000 arrangements. That is roughly 43 quintillion states for a puzzle with only 20 moving pieces. The count comes from the permutations of the corners and edges, not from the stickers.
• 20 turns or fewer, always. No scramble needs more than 20 moves if you find the optimal solution. Beginners will not solve in 20 moves, and that is fine — the number describes the puzzle's ceiling, not your learning curve.

The practical takeaway: a scrambled cube is never "broken" or unsolvable. If a pattern truly cannot exist on a real cube, the site's solver says so and points to the piece that looks wrong instead of returning a solution that cannot work.

What the site actually offers

The page combines four tools around the same 3x3 puzzle:

How the 3x3 differs from other cube sizes

The site is explicit that the 3x3 is the standard cube, distinct from 2x2, 4x4 and larger puzzles. The distinction matters for beginners because the layer-by-layer method taught here is written for the 3x3's structure: fixed centers that name each face, 12 edges and 8 corners. On a 2x2 there are no centers or edges to work with, and on 4x4 and up the centers move, so the same sequences do not transfer directly.

A sensible first session

1. Open the simulator and press Scramble a few times, dragging stickers to get a feel for how layers turn and snap.
2. Work through the seven-step tutorial. Most people get through it in a weekend, and there are only a handful of short sequences to remember.
3. When you can solve without looking at the steps, switch to the timer: hold space, release, solve, press again. Watch your average of 5 rather than any single time.
4. If you get stuck mid-solve, enter your cube's colors into the solver and step through its ~20-move answer to see where your own solution went wrong.

Your times stay saved in your browser, so you can return to the same averages later. The solver does not require you to hold the cube any particular way — the six center stickers name the faces, so you paint them as you see them and the solver works out the rest.

To use the timer on onlinecube.com, hold down the space bar and release it to start timing, then press the space bar again to stop. On a phone, tap the clock instead. Each solve comes with a fresh 20-move scramble, and the timer automatically tracks your best time, your average, and your averages of 5 and 12 — the figures speedcubers use in competition. You can also switch on inspection to get the WCA-standard 15 seconds, and your times stay saved in your browser between visits.

Starting and Stopping a Solve

The control scheme is built around the space bar, which mirrors how most speedcubing timers work in practice:

1. Hold the space bar down. This is the "ready" position — keep holding until you're set.
2. Release the space bar to start the clock.
3. Press the space bar again to stop it when you finish the solve.

On a touchscreen, tap the clock in place of the space bar for both the start and stop actions.

A few practical notes:

• The hold-then-release pattern exists so you can't start the timer by accident with a stray keypress. Get in the habit of holding until your hands are in position.
• If you're solving on the on-screen 3D cube rather than a physical cube, you'll need to move between the simulator and the timer. Most people use the timer alongside a real cube.
• The timer is designed for any 3x3 speedcube — the site notes it works with an original Rubik's brand cube, a GAN, a MoYu, or whatever cube you happen to own.

What the Timer Records

Every solve feeds into a set of statistics that update automatically:

Averages of 5 and 12 are the numbers used at official competitions, so tracking them gives you a realistic picture of your progress rather than a flattering single lucky solve. Watch the ao5 and ao12 trends rather than your best time — a dropping average means you're genuinely getting faster, while a single fast solve can just be luck.

Using Inspection Mode

If you want to practice under competition conditions, turn on inspection. This gives you the WCA's 15-second inspection window before each solve, so you can plan your first moves the way you would at a real event.

Inspection changes your routine: instead of picking up the cube cold, you get a fixed period to study the scramble and decide on your cross. Practicing with it on trains the planning habit that separates casual solvers from competitors.

Scrambles and Saved Times

Each solve generates a new 20-move scramble, so you never repeat the same position twice in a session. That's enough moves to thoroughly mix the cube — the site points out that a 3x3 has over 43 quintillion possible arrangements, and any one of them can be solved in 20 turns or fewer (a limit known as God's Number).

Your times are stored in your browser, which means:

• You can close the tab and come back later without losing your history.
• Your records are tied to that browser on that device — they won't follow you to a different browser or a different computer.
• Clearing your browser data will wipe your saved times.

A Simple Practice Routine

If you're new to timed solving, a workable session looks like this:

1. Enable inspection if you're training for competition; leave it off if you're just building consistency.
2. Hold, release, solve, stop — one solve at a time, no rushing between attempts.
3. After every five solves, glance at your ao5. After twelve, check your ao12.
4. Use the scramble each time rather than re-solving a cube you've half-mixed by hand.

The layer-by-layer beginner method taught on the same site is a reasonable first solving approach — most people get through it in a weekend — and once you can solve without referring to the steps, the timer becomes a useful way to measure whether your practice is paying off.

To solve your scrambled cube on onlinecube.com, copy each sticker color from your physical cube onto the flat net in the solver section, then press Solve. The site returns a solution in about twenty moves, calculated in your own browser with the Kociemba two-phase algorithm. You can then step through those moves one at a time while the 3D cube on screen turns along with you. This works for any 3x3 speedcube, and you don't need to hold your cube in a particular orientation.

Entering your cube correctly

The solver reads the six center stickers as the names of the faces, so you paint the net exactly as you see your cube — no reorientation needed.

1. Pick a face to start with. Any face works. Use its center sticker color as the reference for that side of the net.
2. Fill in the eight surrounding stickers for that face, matching what you see on your cube.
3. Repeat for the remaining five faces, always keying each face off its own center sticker.
4. Press Solve.

Expected result: a move sequence of roughly twenty turns. Because the centers anchor each face, a cube held "sideways" or upside down still solves correctly — the solver works out the rest from the centers.

If your pattern is impossible

If the colors you entered could never exist on a real cube — for example, a corner with two stickers of the same color — the solver will not return a solution. Instead it tells you which piece looks wrong. Recheck that piece against your physical cube and correct the net. This guard means you never get handed a sequence that cannot work.

Stepping through the solution

Once the solution appears, you can advance one move at a time. The 3D cube turns in sync with each step, so you can follow along on your real cube and confirm each turn before moving on. This is the main reason to use the solver as a learning aid rather than just a answer machine: you see how each move changes the cube.

Related tools on the same page

The solver sits alongside three other features that share the same 3D cube:

Why about twenty moves is enough

A 3x3 has 20 moving pieces that can be arranged in 43,252,003,274,489,856,000 different ways. Despite that, any arrangement can be solved in 20 turns or fewer — a limit called God's Number, proved by researchers only in 2010. The solver's roughly twenty-move answers sit right at that ceiling, which is why the output stays short even for heavily scrambled cubes.

Practical tips

• Use the simulator to practice the returned moves before applying them to your physical cube, especially if you're new to notation.
• Keep the timer's inspection off until you're comfortable with the layer-by-layer method; the 15-second WCA countdown adds pressure you don't need while learning.
• Trust the impossible-pattern warning. If the solver flags a piece, the error is almost always a misread sticker on the net, not a broken cube.

The tutorial on onlinecube.com teaches the layer-by-layer method, the approach almost every cuber learns first. It walks you through building the white cross, finishing the white face, filling in the middle layer, making the yellow cross, and then putting the last layer in order. Only a handful of short sequences need to be memorized, and according to the site, most people get through it in a weekend.

The Seven-Step Structure

The tutorial is organized as a seven-step path for beginners. The page evidence names these stages:

1. Build the white cross
2. Finish the white face
3. Fill in the middle layer
4. Make the yellow cross
5. Put the last layer in order

The remaining steps complete the final layer arrangement. The exact sequence names beyond the yellow cross are not detailed in the available page text, so treat the list above as the confirmed core and expect the final steps to finish orienting and permuting the last-layer pieces.

Why layer-by-layer first

The layer-by-layer method is the standard entry point because it breaks the cube into small, repeatable goals rather than requiring you to understand the whole puzzle at once. Each stage leaves the previous work intact, so you always know what "done" looks like before moving on.

What You Actually Need to Memorize

The site describes the method as requiring "only a handful of short sequences." That is the key practical point for a beginner: you are not memorizing hundreds of algorithms. You learn a small set of move sequences and apply them in the right situations.

The table reflects the structure described on the page; the specific algorithm counts per stage are not enumerated in the source.

How Long It Takes

The site states most people get through the tutorial in a weekend. That estimate assumes you work through the steps in order and practice each stage before moving on. If you only have short sessions, expect it to spread across a few days rather than a single sitting.

How the Tutorial Fits With the Rest of the Site

The tutorial sits alongside three other tools on the same page, and they reinforce each other:

• The 3D simulator lets you drag stickers and turn faces with the keyboard (U, L, F, R, B, D; hold Shift for counterclockwise). You can practice the sequences from the tutorial directly on screen.
• The solver takes your scrambled cube's colors on a net and returns a solution in about twenty moves, using the Kociemba two-phase algorithm in your browser. You can step through moves one at a time with the 3D cube turning along. This is useful for checking your own work or getting unstuck.
• The timer gives a fresh 20-move scramble per solve and tracks your best time, average, and averages of 5 and 12, with an optional 15-second WCA inspection.

For a beginner, the practical loop is: read a tutorial step, practice it on the simulator, then use the timer to measure progress once you can solve without help.

Common Sticking Points

Based on the method's structure, beginners typically struggle in these places:

• Middle-layer edges — the first stage where you must recognize a case and apply a sequence rather than place a piece intuitively.
• Yellow cross — the sequence is short but must be repeated from different angles; recognizing the starting position matters.
• Last layer order — the final arrangement step has the most cases to distinguish.

If a sequence isn't working, the solver can confirm whether your cube state is even reachable. The site notes that if a color pattern could never exist on a real cube, the solver tells you which piece looks wrong rather than returning an impossible solution.

Who This Tutorial Is For

It suits complete beginners who want a guaranteed path to a first solve, and anyone who wants a refresher on the layer-by-layer method before moving to faster techniques. It is not a speedcubing method tutorial — the timer supports speed practice, but the tutorial itself teaches the beginner approach. The site notes it works with any 3x3 speedcube, whether an original Rubik's brand, a GAN, a MoYu, or a budget cube.

Online 3x3 Cube (onlinecube.com) is a free browser-based site built around the standard 3x3 Rubik's Cube. It combines four tools on one page: a 3D simulator you can drag and turn, a one-click solver that returns a solution in about 20 moves, a speedcube timer that tracks your best time and averages, and a seven-step beginner tutorial. It works with any physical 3x3 cube, so you can use it alongside a GAN, a MoYu, an original Rubik's brand, or a budget cube.

The 3D simulator: drag, scramble, and turn

The cube at the top of the page is a real 3D model, not a video or image. You interact with it directly:

• Drag a sticker and that layer follows your finger. It snaps into place once you pass about a third of a turn.
• Drag the background to spin the whole cube and inspect the back faces.
• Scramble mixes the cube for you.
• Full screen gives you a larger view.
• Keyboard turns: use U, L, F, R, B and D for face turns. Hold Shift for a counterclockwise turn.

This is useful if you don't have a cube in hand, want to visualize an algorithm before trying it, or need to check what a move sequence actually does.

The solver: enter your colors, get a move list

The solver is designed for a scrambled physical cube you want to solve. The workflow is:

1. Copy the colors of your scrambled cube onto the flat net shown in the solver.
2. Press Solve.
3. Step through the returned moves one at a time — the 3D cube turns along with you.

A few details worth knowing before you rely on it:

• The answer comes back in about twenty moves. The calculation runs in your own browser using the Kociemba two-phase algorithm.
• Orientation doesn't matter. The six center stickers name the faces, so you paint them as you see them and the solver works out the rest. You don't need to hold the cube a particular way.
• Impossible patterns are flagged. If a color arrangement could never exist on a real cube, the solver tells you which piece looks wrong instead of returning a solution that can't work. This is handy for catching a mistyped sticker or a physically twisted corner.

The timer: best time, averages of 5 and 12

The timer is set up for speedcubing practice rather than casual timing:

• Hold the space bar, then release to start. Press again to stop. On a phone, tap the clock instead.
• Every solve gets a fresh 20-move scramble.
• It tracks your best time, your average, and your averages of 5 and 12 — the numbers speedcubers use in competition.
• Inspection mode gives you the WCA's 15 seconds.
• Your times stay saved in your browser, so they persist between visits.

If you're preparing for competition-style practice, the ao5 and ao12 tracking is the main reason to use this over a plain stopwatch.

The tutorial: layer-by-layer in seven steps

The tutorial teaches the layer-by-layer method, the approach almost every cuber learns first. The sequence is:

1. Build the white cross.
2. Finish the white face.
3. Fill in the middle layer.
4. Make the yellow cross.
5. Put the last layer in order.

There are only a handful of short sequences to memorize, and according to the site most people get through it in a weekend. If you're completely new, the layer-by-layer route is the right starting point — it's slower than advanced methods but far easier to learn and remember.

A bit of context: why 20 moves matters

The 3x3 has 20 moving pieces that can be arranged in 43,252,003,274,489,856,000 different ways. Despite that number, any arrangement can be solved in 20 turns or fewer — a limit called God's Number, which researchers only proved in 2010. The solver's "about twenty moves" answer sits right at that theoretical ceiling, which is why it can handle any valid scramble you give it.

Who each tool is for

All four tools live on the same page, so you can move between learning, solving, and timing without switching sites.