Hello Programmers!!↵
↵
We, [The IIITV Coding Club](https://iiitvcc.vercel.app/) and Enigma (The IIITV Mathematics Club), are pleased to invite the global competitive programming community to participate in **CC × Enigma: Tesseract'26**, an online reverse coding contest.↵
↵
Tesseract'26 is designed to move beyond traditional problem-solving formats and challenge participants through logical deduction, mathematical reasoning, and reverse engineering.↵
↵
#### Contest Format↵
The problemset will contain around 9-15 problems, each of varying difficulty. The problems will **not** be in any particular difficulty order, so you should attempt all the questions. This contest will be held on [rules of codeforces](https://mirror.codeforces.com/blog/entry/4088).↵
↵
- Date: Sunday, 1st February, 2026↵
- Time: [14:00 to 17:00 IST (GMT+05:30)](https://www.timeanddate.com/worldclock/fixedtime.html?msg=CC+X+ENIGMA+%3A+TESSERACT%2726&iso=20260201T14&p1=1572&ah=3)↵
- Mode: Online↵
- Platform: Codeforces↵
- Registration link: [Official Website](https://tesseract-2k26.vercel.app/)↵
↵
The contest follows a **reverse coding** format:↵
↵
- Each problem provides access to an interactive **sandbox** on official website.↵
- Participants may query the system with custom inputs↵
- Outputs returned by the system must be analyzed to infer the underlying logic↵
- No explicit problem statement is provided↵
- Participants must implement a program that exactly reproduces the observed behavior↵
- Submissions are evaluated on hidden test cases↵
- Standard judging rules apply (Accepted / Wrong Answer / Time Limit Exceeded)↵
↵
↵
↵
↵
#### Eligibility↵
↵
- The contest is open to participants worldwide↵
- Participation is individual↵
↵
↵
#### Prizes Distribution↵
↵
**Total Prize Pool : ₹10,000**↵
↵
**Prize Breakdown**↵
↵
- Champion: ₹3,300↵
- Runner Up: ₹2,700↵
- IIITV Special Ops Category: ₹2,300 + ₹1,700(FY)↵
↵
↵
####Prizes Claim Policy↵
↵
↵
- **Only participants currently studying in Indian institutions are eligible for prizes**↵
- International participants are welcome to compete but will not be considered for prize distribution↵
↵
To claim prizes, a participant must:↵
↵
- Have valid contest submissions↵
- Be registered on [Unstop](https://unstop.com/p/ccxenigma-tesseract26-iiit-vadodara-1620570)↵
- Be registered on [the official event website](https://tesseract-2k26.vercel.app/)↵
- Comply with all contest rules and verification requirements↵
↵
Failure to meet **any** of the above conditions will result in forfeiture of prize eligibility, regardless of contest rank.↵
↵
####Organizing Team↵
↵
The problems were authored and tested by the members of the [IIITV Coding Club](https://iiitvcc.vercel.app/home) and **Enigma — IIITV Mathematics Club**.↵
↵
**Event Coordinators**: [user:Mr.Quantum_1915,2026-01-31], [user:SarahSpeedy,2026-01-31], [user:tarundeepakjain,2026-01-31], [user:ZodiacZ408,2026-01-31], [user:Arpitmaheswari,2026-01-31]↵
↵
**Problem Setters**: [user:ZodiacZ408,2026-01-31], [user:Mr.Quantum_1915,2026-01-31], [user:Arpitmaheswari,2026-01-31], [user:tarundeepakjain,2026-01-31]↵
↵
↵
####Updates↵
↵
**Update 1:** Registrations are open on [Unstop](https://unstop.com/p/ccxenigma-tesseract26-iiit-vadodara-1620570) and [the official event website](https://tesseract-2k26.vercel.app/), participants must complete both registrations to be eligible for prizes.↵
↵
**Update 2:** All participants must set up **OBS** and record their screen during the contest. The recording must be shared with the organizers if requested. If you wish to **participate without consideration for prizes**, this is not mandatory.↵
↵
**Update 3:** Contest link is [here](https://mirror.codeforces.com/contests/668703).↵
↵
**Update 4:** Editorial of problems are [out](https://mirror.codeforces.com/blog/entry/150754) now.
↵
We, [The IIITV Coding Club](https://iiitvcc.vercel.app/) and Enigma (The IIITV Mathematics Club), are pleased to invite the global competitive programming community to participate in **CC × Enigma: Tesseract'26**, an online reverse coding contest.↵
↵
Tesseract'26 is designed to move beyond traditional problem-solving formats and challenge participants through logical deduction, mathematical reasoning, and reverse engineering.↵
↵
#### Contest Format↵
The problemset will contain around 9-15 problems, each of varying difficulty. The problems will **not** be in any particular difficulty order, so you should attempt all the questions. This contest will be held on [rules of codeforces](https://mirror.codeforces.com/blog/entry/4088).↵
↵
- Date: Sunday, 1st February, 2026↵
- Time: [14:00 to 17:00 IST (GMT+05:30)](https://www.timeanddate.com/worldclock/fixedtime.html?msg=CC+X+ENIGMA+%3A+TESSERACT%2726&iso=20260201T14&p1=1572&ah=3)↵
- Mode: Online↵
- Platform: Codeforces↵
- Registration link: [Official Website](https://tesseract-2k26.vercel.app/)↵
↵
The contest follows a **reverse coding** format:↵
↵
- Each problem provides access to an interactive **sandbox** on official website.↵
- Participants may query the system with custom inputs↵
- Outputs returned by the system must be analyzed to infer the underlying logic↵
- No explicit problem statement is provided↵
- Participants must implement a program that exactly reproduces the observed behavior↵
- Submissions are evaluated on hidden test cases↵
- Standard judging rules apply (Accepted / Wrong Answer / Time Limit Exceeded)↵
↵
↵
↵
↵
#### Eligibility↵
↵
- The contest is open to participants worldwide↵
- Participation is individual↵
↵
↵
#### Prizes Distribution↵
↵
**Total Prize Pool : ₹10,000**↵
↵
**Prize Breakdown**↵
↵
- Champion: ₹3,300↵
- Runner Up: ₹2,700↵
- IIITV Special Ops Category: ₹2,300 + ₹1,700(FY)↵
↵
↵
####Prizes Claim Policy↵
↵
↵
- **Only participants currently studying in Indian institutions are eligible for prizes**↵
- International participants are welcome to compete but will not be considered for prize distribution↵
↵
To claim prizes, a participant must:↵
↵
- Have valid contest submissions↵
- Be registered on [Unstop](https://unstop.com/p/ccxenigma-tesseract26-iiit-vadodara-1620570)↵
- Be registered on [the official event website](https://tesseract-2k26.vercel.app/)↵
- Comply with all contest rules and verification requirements↵
↵
Failure to meet **any** of the above conditions will result in forfeiture of prize eligibility, regardless of contest rank.↵
↵
####Organizing Team↵
↵
The problems were authored and tested by the members of the [IIITV Coding Club](https://iiitvcc.vercel.app/home) and **Enigma — IIITV Mathematics Club**.↵
↵
**Event Coordinators**: [user:Mr.Quantum_1915,2026-01-31], [user:SarahSpeedy,2026-01-31], [user:tarundeepakjain,2026-01-31], [user:ZodiacZ408,2026-01-31], [user:Arpitmaheswari,2026-01-31]↵
↵
**Problem Setters**: [user:ZodiacZ408,2026-01-31], [user:Mr.Quantum_1915,2026-01-31], [user:Arpitmaheswari,2026-01-31], [user:tarundeepakjain,2026-01-31]↵
↵
↵
####Updates↵
↵
**Update 1:** Registrations are open on [Unstop](https://unstop.com/p/ccxenigma-tesseract26-iiit-vadodara-1620570) and [the official event website](https://tesseract-2k26.vercel.app/), participants must complete both registrations to be eligible for prizes.↵
↵
**Update 2:** All participants must set up **OBS** and record their screen during the contest. The recording must be shared with the organizers if requested. If you wish to **participate without consideration for prizes**, this is not mandatory.↵
↵
**Update 3:** Contest link is [here](https://mirror.codeforces.com/contests/668703).↵
↵
**Update 4:** Editorial of problems are [out](https://mirror.codeforces.com/blog/entry/150754) now.
