An Endurance Online Speedcubing Competition Built for Every Skill Level
21st – 22nd November 2026 (Saturday & Sunday) | Global Virtual Event | Live 1-on-1 Judging
Think you have the speed? Now it is time to prove your stamina. Cube Tower Challenge 2026 (CTC 2026) is back on Cubing Heat, uniting puzzle solvers from across the globe for an action-packed weekend of endurance speedcubing.Whether you are hunting for a new personal record, testing your nerves on our brand-new One-Handed and Micro Guildford towers, or entering your very first tournament, CTC 2026 is built for you.
Designed for total convenience and high-adrenaline fun, you can pick your favorite cube towers, lock in a 1-hour time slot that fits your weekend schedule, compete live from home, and win custom trophies.
Registrations open on 29th Oct 2026
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What is the Cube Tower Challenge?
In a standard speedcubing tournament, you solve one puzzle at a time and reset. The Cube Tower Challenge flips the script by putting your endurance to the test. Each “Tower” is a line-up of multiple scrambled puzzles that you must solve back-to-back in a single continuous run, without stopping the timer. Your combined completion time determines whether you take home the Turbo or Zippy Trophy.
Conceptualized by Brain Studio, this marathon-style format challenges four core skills:
- Multi-Puzzle Versatility: Adapting seamlessly from 2×2 and 3×3 to Pyraminx, Skewb, Clock, and Square-1.
- Lightning Transitions: Moving from one puzzle to the next without losing momentum.
- Composure Under Pressure: Staying focused when a single mistake impacts the whole tower.
- Endurance Strategy: Pacing your look-ahead and turning speed across 3, 5, or 7 consecutive solves.
Event Dates & Weekend Schedule
CTC 2026 takes place across two thrilling days. You are free to book a convenient 1-hour time slot on Saturday, Sunday,or both days depending on which towers you enter.
| Day & Date | Scheduled Towers |
| Day 1 – Saturday, 21st November 2026 | Tower D, Tower E, Tower F |
| Day 2 – Sunday, 22nd November 2026 | Tower A, Tower B, Tower C |
The competition rules and live-judging standards follow our proven Cubing Heat framework, guaranteeing a smooth, transparent, and fair experience for every competitor.
CTC 2026 Tower Lineup & Trophy Time Cutoffs
For 2026, we have leveled up the excitement with brand-new challenges! Tower D is now an all-out One-Handed (OH) Triple Threat, and Tower F introduces the ultimate 7-Cube Micro Guildford Challenge.
Every tower features two trophy tiers based on your total non-stop finish time: Turbo Cuber (elite speed) and Zippy Cuber (good endurance achievement).
| Tower Category | Cubes in the Tower (Solved Back-to-Back) | Turbo Cuber Goal | Zippy Cuber Goal |
| Tower A (3 Cubes) | 3×3, 3×3, 3×3 | Within 1 min 30s | Within 3 min |
| Tower B (3 Cubes) | 2×2, 3×3, Pyraminx | Within 1 min 30s | Within 3 min |
| Tower C (3 Cubes) | 2×2, Pyraminx, Skewb | Within 1 min | Within 2 min |
| Tower D (3 Cubes – One-Handed) | 2×2 OH, 3×3 OH, Pyraminx OH (All 3 solved one-handed!) | Within 3 min | Within 5 min |
| Tower E (5 Cubes) | 2×2, 3×3, Pyraminx, Skewb, Mirror Cube | Within 4 min | Within 6 min |
| Tower F (7 Cubes – Micro Guildford Challenge) | 2×2, 3×3, Pyraminx, Skewb, 3×3 OH, Clock, Square-1 | Within 5 min | Within 8 min |
Trophies & Recognition – How You Win
In the Cube Tower Challenge, you aren’t just competing against a leaderboard. You are competing against the clock to unlock your achievement. Every cuber who beats the target time for their registered tower wins a physical trophy!
| Achievement Tier | Qualification Criteria | Reward |
| Turbo Cuber | Complete the entire tower faster than the Turbo time | Turbo Trophy (Elite Achievement) |
| Zippy Cuber | Complete the entire tower faster than the Zippy time cutoff | Zippy Trophy (Good Achievement) |
- Leaderboard Ranking: The faster your combined solve time, the higher you place on the official global CTC 2026 standings.
- Guaranteed Recognition: Every participant receives an official E-Certificate of Participation via email, and trophy winners get their Trophies shipped free of charge1!
Pick your tower. Race the clock. Claim your trophy.
Who Should Enter CTC 2026?
Cube Tower Challenge 2026 is open to puzzle lovers of all ages and backgrounds:
- Seasoned Speedcubers ready to test their multi-event transitions on the Micro Guildford and One-Handed towers.
- Casual & Hobby Cubers looking for a fresh, motivating goal beyond single solves.
- School & Cubing Club Members wanting to compete alongside friends from home.
- First-Time Competitors seeking a welcoming, stress-free introduction to live judged cubing.
Whether you average 10 seconds or 60 seconds, there is a tower designed for your pace.
How to Participate in 5 Simple Steps
- Choose Your Towers: Pick a single tower or challenge yourself across multiple categories.
- Lock In Your Time Slot: Select the 1-hour window on November 21st and/or November 22nd that suits your routine.
- Log In for Live Judging: Join your virtual room where a dedicated 1-on-1 Judge will guide and time your solve in real time—just like an official WCA tournament.
- Conquer the Tower: Solve every puzzle in your tower back-to-back in one continuous shot.
- Celebrate at the Awards Ceremony: Tune in as we crown our Turbo and Zippy champions and celebrate every solver’s achievement!
Fair Play & Live Verification
Integrity is at the heart of every Cubing Heat competition. Every attempt is supervised live by a 1-on-1 judge and backed by video verification to guarantee accurate timing and authentic scrambles. Any tampering or unfair play results in immediate disqualification, keeping the leaderboard 100% genuine and rewarding for honest cubers.
Why You Can’t Miss Cube Tower Challenge 2026
- Compete From Home: Zero travel hassle: Join from anywhere in India or around the world.
- Brand-New 2026 Formats: Take on the all-new One-Handed Trio (Tower D) and the 7-Cube Micro Guildford Challenge (Tower F).
- Flexible Scheduling: Choose your own 1 hour competition slot.
- Win Tangible Rewards: Earn custom Turbo or Zippy Trophies plus an official E-Certificate.
Ready to Stack Up Your Wins?
Slots for live 1-on-1 judging fill up fast. Push your limits, beat the timer, and make your mark at CTC 2026!
Registrations open on 29th October. Cant wait? Ping us so we will send you a link when it’s open
[Register Here]Don’t see the registration button? [Text me the registration link]
Important Email Note: Please double-check your email address during registration and add info@cubingheat.com to your contacts (and check your Spam/Promotions tab) so you don’t miss your slot confirmation and meeting link.
About the Organisers: Explore Cubing Heat | Explore Brain Studio
Frequently Asked Questions (FAQs)
Each participant gets one (1) official attempt per registered tower.During this single attempt, you must solve all the puzzles in your chosen tower (3, 5, or 7 puzzles) consecutively in one non-stop run. Please check carefully, a DNF (Did Not Finish) on any single puzzle results in a DNF for that entire tower attempt!
Out of the 6 tower categories, a cuber can participate in all four of the 3-Cube Towers (Towers A, B, C, and D) and one of the marathon towers (either Tower E or the Tower F Micro Guildford Challenge)
While registering, you will choose a convenient 1-hour time slot. If you register for towers taking place on both days (for example, Tower D on Saturday and Tower B on Sunday), please make sure to select one time slot for Day 1 (21st Nov) and one time slot for Day 2 (22nd Nov).
In Tower D, all three puzzles (2×2, 3×3, and Pyraminx) must be solved strictly using one hand from start to finish. During a puzzle solve, only one hand may touch the puzzle; using the table surface to help turn or stabilize is permitted under standard One-Handed speedcubing rules.
Registrations close on Thursday, 19th November 2026. We recommend booking early to secure your preferred time slot.
Cubing Heat hosts international virtual speedcubing tournaments every other month, featuring fresh themes, different style events, and unique endurance formats. Join our community to stay updated on upcoming championships and workshops!
- Free shipping only applies to participant addresses within India. Shipping charges for addresses outside India will be bearable by the participant. ↩︎