4×4 Beginner's Guide: How to Solve a Rubik's Revenge
The 4×4 Rubik's Cube (Rubik's Revenge) is the next challenge after mastering the 3×3! With movable centers and edge pairing, it introduces new concepts while building on what you already know. Ready to level up?
What You'll Learn
- The Reduction Method: solving 4×4 by converting it to 3×3
- Center solving strategies for all 6 faces
- Edge pairing techniques to create 12 paired edges
- How to identify and fix parity errors
Understanding the 4×4 Cube: Core Concepts
The 4×4 introduces several new concepts that don't exist on the 3×3:
Movable Centers (Unlike 3×3)
- ✓The 4×4 has 24 center pieces (4 per face) that can move around
- ✓You must solve centers first to establish color scheme
- ✓Centers can be scrambled and need to be reassembled
Edge Pairing is Required
- ✓The 4×4 has 24 edge pieces that must be paired into 12 double-edges
- ✓Edge pairing is the most time-consuming step for beginners
- ✓Once paired, edges behave like 3×3 edges
The Reduction Method
- ✓Solve centers first (6 center blocks of 4 pieces each)
- ✓Pair all edges (12 paired edges total)
- ✓Solve the resulting 'virtual 3×3' using your 3×3 method
Parity Errors (New Challenge)
- ✓Even-layered cubes (4×4, 6×6) can have unsolvable-looking states
- ✓Two types: OLL parity (a single flipped dedge — impossible on a 3x3) and PLL parity (a swap of two dedges — also impossible on a 3x3)
- ✓Special algorithms exist to fix parity—it's not a mistake!
Reading 4×4 Notation: Beyond the Basics
The 4×4 uses all standard 3×3 notation plus new moves for inner layers:
🎯Basic Face Moves (Same as 3×3):
Fouter front faceRouter right faceUouter top faceLouter left faceDouter bottom faceBouter back face🔄Second-Layer Moves (NEW for 4×4):
2Rsecond layer from the right2Lsecond layer from the left2Usecond layer from the top2Dsecond layer from the bottom2Fsecond layer from the front2Bsecond layer from the back↔️Wide Moves (2 Layers):
RwRw - turn the outer R face and the adjacent inner layer together (2 layers)LwLw - turn the outer L face and the adjacent inner layer together (2 layers)Wide moves turn 2 layers together (outer + adjacent inner). The x move rotates the whole cube like an R turn.
⚡The Symbols:
RR = Turn right face clockwise 90°R'R' = Turn right face counterclockwise 90° (apostrophe = counter)R2R2 = Turn right face 180° (direction doesn't matter)The 4-Step Reduction Method
This is the beginner-friendly approach to solving the 4×4. Follow these steps in order:
Goal: Create six solid 2×2 center blocks, one for each color. Start with white centers, then move to yellow (opposite face), then complete the four side colors. Use intuitive moves to bring center pieces together. Tip: Solve opposite colors together (white/yellow, red/orange, blue/green) to maintain relative positioning. Use second-layer moves such as 2R, 2U, and 2F to move pieces without disrupting completed centers.
✓ Success Check: All 6 faces should have solid 2×2 center blocks. The centers establish your color scheme for the rest of the solve.
Goal: Match all edge pieces into 12 double-edge pairs. Find two matching edge pieces and bring them to the top layer. Use the wide-turn slice-flip-slice idea (Rw U Rw') to pair them together. Work systematically and store completed pairs away from your working area while solving new pairs.
✓ Success Check: You should have 12 fully paired edges. Each pair acts as a single 3×3 edge. No loose edge pieces should remain.
Goal: Use your 3x3 beginner method to solve the paired cube. Now that centers are solved and edges are paired, the 4x4 behaves exactly like a 3x3. Use the same method you learned for 3x3: white cross, white corners, middle layer, yellow cross, orient yellow corners, permute last layer. Treat each center block as one center piece, and each edge pair as one edge. If you encounter a seemingly impossible situation, such as one flipped dedge or an impossible last-layer swap, you have parity and can fix it in Step 4.
✓ Success Check: The cube should look solved, or you may encounter parity. If you see one flipped dedge or an impossible last-layer swap, continue to Step 4.
Goal: Resolve parity errors that prevent final solving. Two common reduction parity types are OLL parity (a single flipped dedge that cannot happen on a 3x3) and PLL parity (a swap of two dedges that cannot happen on a 3x3). OLL parity is commonly fixed with Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'. The standard PLL parity algorithm Rw2 U2 Rw2 Uw2 Rw2 Uw2 swaps two opposite dedges directly; for an adjacent-dedge swap, sandwich it with setup moves (R' U R U') ... (U R' U' R). Notation note: Rw is WCA-standard wide-move notation; some older guides write Rw2 as 2R2. Practice these slowly from the algorithm table before timing solves.
⚠️ Important: Parity errors only occur on even-layered cubes (4×4, 6×6, etc.). If you encounter a seemingly unsolvable situation during the 3×3 stage, identify whether it is OLL parity or PLL parity, apply the matching algorithm slowly, then continue.
✓ Success Check: Congratulations! Your 4×4 cube should now be completely solved. All centers are solid 2×2 blocks, all edges are paired and positioned correctly, and all corners are in place.
Complete 4×4 Reduction Method Algorithms
| Step | Goal / Action | Algorithm / Key Moves | Notes |
|---|---|---|---|
| Step 1: Solve All 6 Centers | Solve All 6 Centers (2×2 blocks) | (Intuitive) | Use intuitive moves and second-layer moves such as 2R, 2U, and 2F. Solve opposite colors together. |
| Step 2: Pair All 12 Edges | Pair All 12 Edges | Rw U Rw' | Basic pairing idea: Rw U Rw'. Store completed pairs on bottom layer. |
| Step 3: Solve Like a 3×3 Cube | Solve as 3×3 Cube | (Use 3×3 Method) | Use your complete 3×3 beginner method. Treat center blocks and edge pairs as single pieces. |
| Step 4: Fix Parity Errors (If Needed) | Fix Parity Errors (if encountered) | OLL: Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'PLL: 2R2 U2 2R2 Uw2 2R2 Uw2 | OLL parity uses wide moves such as Rw/Lw for a flipped dedge. PLL parity here uses inner-slice 2R notation plus Uw turns for impossible last-layer swaps. Not all solves need either fix. |
Common Mistakes Beginners Make
Not Solving Centers First
Always solve centers before edges! Without fixed centers (like on 3×3), you must establish the color scheme first. Trying to pair edges before centers leads to confusion and wasted effort.
Breaking Paired Edges During 3×3 Stage
After pairing edges, they can still be broken apart if you turn second layers or wide moves. Only use outer face moves (R, L, U, D, F, B) during the 3×3 solving stage.
Panicking at Parity Errors
Seeing one flipped dedge or an impossible last-layer swap is not a normal 3x3 case. It is parity on a 4x4. Apply the matching parity algorithm and continue.
Inefficient Edge Pairing
Don't search randomly for edge pieces. Work systematically: complete all white edges first, then yellow, then middle layer edges. Store completed pairs safely on the bottom layer.
Not Using Slice Moves for Centers
Trying to solve centers using only outer layer moves is extremely inefficient. Learn to use second-layer moves such as 2R, 2L, 2U, 2D, 2F, and 2B to move center pieces without disrupting other centers.
FAQs & Pro Tips
Yes, the 4×4 is more challenging because it requires center solving, edge pairing, and dealing with parity. However, if you know the 3×3 method, the core solving stage is identical. Most of the extra difficulty comes from the preparation stages (centers and edges).
If you already know the 3×3, expect to complete your first 4×4 solve in 1-3 hours of focused practice. After a week of regular practice, most people can solve it consistently in 5-10 minutes. Speed comes with experience.
Parity is a situation unique to even-layered cubes such as 4x4 and 6x6. In reduction, OLL parity is a single flipped dedge and PLL parity is an impossible last-layer edge swap. Identify the type, apply the matching parity algorithm from the 4x4 algorithm table, then continue solving.
No. You only fix parity when you encounter it. OLL parity and PLL parity are separate cases, so a solve can have either one, both, or neither.
Start with the standard reduction method. Once you can solve consistently, explore advanced 4×4 approaches from trusted speedsolving resources, but keep this guide focused on reduction fundamentals first.
During the 3×3 solving stage, you must only turn outer layers (R, L, U, D, F, B). Turning second layers or wide moves will break your edge pairs! Be mindful of which layers you're turning.
A good order is: White → Yellow → Red → Orange → Blue → Green. Solving opposite colors consecutively helps maintain their relative positioning. Advanced solvers may use different center orders, but this order keeps the beginner reduction method predictable.
Practice these tips: (1) Look ahead—spot your next edge pair while solving the current one. (2) Use efficient slice moves rather than turning the whole cube. (3) Store completed pairs safely on the bottom. (4) Learn advanced pairing techniques like 3-2-3 edge pairing.
Yes! After reduction (centers + edges), you can use any 3×3 method you prefer. CFOP, Roux, ZZ—they all work. Just remember to only turn outer layers to preserve your edge pairs.
You have several paths: (1) Make your reduction solves smoother. (2) Learn advanced parity algorithms for faster fixes. (3) Explore other guides from the learning hub. (4) Start speedsolving and work toward sub-2 minute times!
🚀 Next Moves
Learning Resources
- World Cube Association (WCA)– Official 4×4 competition rules and world records.
- SpeedSolving.com Wiki– Advanced 4×4 methods, parity algorithms, and community discussion.