“Technology is the best when it brings people together.” 

– Matt Mullenweg

The  Expert Unlimited Clan of Delhi Public School, R.K. Puram, popularly known as EXUN clan, hosted the 30th edition of its Annual International Technology Symposium on 22 November 2025. Every year, tech wizards and enthusiasts from all over India gather at the symposium to hone their skills, assess their proficiency and create unforgettable experiences.

This year, EXUN 2025 organised numerous events that spanned multiple spheres, in collaboration with affiliated clubs of the school such as DomainSquare+, featuring gaming showdowns; Roboknights, showcasing amazing robots competing in football; and CubXL, with cubing and racing against the clock.

Intel, a leading producer, designer and manufacturer of various computer components along with Athena Education, which has secured acceptances to leading global universities, including the Ivy League institutions sponsored the event. Additional support was provided by PlayStation, a prominent interactive entertainment provider renowned for its cutting-edge gaming consoles and exclusive titles.

The event constituted a variety of competitions that were judged by alumni of the school. The competitions were as follows:

1. Build: Hackathon
The Hackathon challenged students from Classes 6-12 to conceptualize and develop an innovative web mobile, or command-line application aligned with the given prompt. With one team per school and up to four participants per team, the hybrid-format event tested creativity, technical execution and real-time problem solving. Over the stipulated development window, the teams collaborated intensively to refine features, debug systems and present polished prototypes, reflecting both technical competence and strong teamwork.

2. Build: Designathon
Open to Classes 6-12, the Designathon brought together young designers to craft inventive solutions to a problem statement using structured design-thinking methodology. Teams of up to three participants produced UI/UX designs, posters, 3D models, promotional films and other creative deliverables. The hybrid event fostered ideation, visual communication and interdisciplinary design, celebrating originality and impactful storytelling.

3. Build: Unreality
Build: Unreality invited participants of all age groups to immerse themselves in the dynamic field of game development through an online-only challenge. Teams of up to four members created a fully functional game around a central theme using any preferred engine or tools. Submissions were evaluated on originality, gameplay, audio and visual design, with additional merit awarded for self-created assets. The event pushed participants to combine technical skill with artistic vision under time-sensitive constraints.

4. Competitive Programming
This highly rigorous event, open to all age groups, tested algorithmic thinking and coding proficiency. Participants tackled progressively complex problems grounded in dynamic programming, graph theory and data structures. Conducted in two rounds, the competition culminated in a high-pressure final where the strongest coders demonstrated speed, accuracy and optimal problem-solving strategies.

5. Sudocrypt
Sudocrypt, Exun’s flagship 36-hour online CTF and cryptic hunt, challenged participants with intricately layered puzzles spanning cryptography, logic and advanced pattern recognition. With unlimited participants per school, the event unfolded through escalating levels of complexity, supported by occasional hints and interactive mechanics. Unpredictable and intellectually demanding, Sudocrypt remained one of the Symposium’s most engaging endurance events.

6. Turing Test
Modeled on the International Linguistics Olympiad, the Turing Test offered a computational linguistics challenge open to all age groups. Participants solved structured linguistic problems requiring analytical reasoning, pattern identification and logical deduction. Judged on accuracy and clarity of explanation, the event attracted problem-solvers with a passion for language, logic and computational thinking.

7. Quiz
The Exun Quiz, open to Classes 9-12, featured a hybrid format with teams of two, competing through an online preliminary round and an on-stage final. Questions spanned from the fields of technology history, contemporary affairs, programming and corporate developments to digital culture. The top six teams advanced to an engaging, high-energy final where precision, speed and breadth of knowledge determined the winners.

8. Crossword
The Crossword event for Classes 9-12 tested wit, wordplay and command of tech-related terminology. After an online preliminary round, six finalist teams competed in the offline bounce-pounce format. All clues were centered on computing, technology, renowned figures in IT and related vocabulary, ensuring a challenging and intellectually rewarding experience.

9. Hardware
Highlighting the foundational role of physical computing, the Hardware event required teams of two (Classes 9-12) to solve hands-on tasks involving components, networking equipment and system-level hardware interactions. Conducted in hybrid mode, it evaluated participants’ practical understanding of computer architecture, diagnostics and hardware design principles.

10. Girls in Tech
Dedicated to empowering female students in STEM, Girls in Tech welcomed girl participants from grades 6-12 in teams of up to three. Conducted fully online, the event combined a preliminary and final round, emphasizing problem-solving, collaboration and exposure to technology fields. It aimed to foster inclusive participation and strengthen representation in tech spaces.

11. Group Discussion
The Group Discussion event encouraged thoughtful discourse on technology and ethics for the students of Classes 9-12. Participants submitted video entries for the preliminary round, after which selected students advanced to the offline semifinal and final rounds. With an emphasis on structured argumentation and well-reasoned perspectives, the event celebrated clarity, conviction and intellectual engagement.

12. ExML
ExML 2025 challenged participants to engineer advanced AI-based systems capable of adapting to complex, evolving conditions. Open to all age groups, teams of two per school tackled a fast-paced machine-learning task designed to test technical depth, strategic design and innovation. Solutions were judged on performance metrics and creative problem formulation.

13. DomainSquare+ Gaming: PC
This gaming event for Classes 9-12 began with an online round requiring at least a low-end PC or laptop. Final rounds were held onsite with professional equipment provided. Teams of two demonstrated strategy, reflexes and adaptability in competitive PC gaming formats, delivering an energetic spectator experience.

14. DomainSquare+ Gaming: Surprise
With two teams per school, this event kept participants on their toes with an undisclosed gaming challenge revealed only during the competition. After online preliminaries, finalists competed offline using school-provided equipment. The format rewarded flexibility, rapid learning and spontaneous strategy-building.

15. DomainSquare+ Gaming: Showdown!
The Pokémon Showdown tournament for Classes 9-12 tested strategic depth, prediction skills and adaptability. One participant per school competed across online and offline rounds, showcasing mastery over competitive battle mechanics and real-time decision-making.

16. CubXL 2×2
This WCA-regulated 2×2 speedcubing event for Classes 6-12 featured online preliminaries and offline finals. One participant per school competed in timed rounds where precision, dexterity and efficiency determined advancement. The event highlighted the fast-paced, high-skill nature of competitive cubing.

17. CubXL 3×3
A classic 3×3 speedcubing event, CubXL 3×3 brought together top cubers from Classes 6–12 for online preliminary rounds followed by offline finals. With the WCA guidelines in place, the competitors demonstrated technical excellence, solving accuracy and consistency under time pressure.

18. CubXL Pyraminx
This Pyraminx-based cubing challenge maintained the same competitive structure: online preliminaries followed by an offline finale. Participants adhered to the WCA regulations while showcasing rapid solving and spatial reasoning across increasingly demanding rounds.

19. Roboknights: Robosoccer
Robosoccer featured high-speed robotic football played by teams of up to three students from Classes 8-12. Using self-built wired or wireless robots within strict size, weight and voltage limits, the teams maneuvered across a scaled arena to score goals. With 3-minute halves, tactical play and a ban on ball-trapping or intentional damage, the contest fused mechanical engineering with dynamic gameplay.

20. Roboknights: Mx+C V7.0 Line Following Robot
This offline robotics event required teams of three (Classes 9-12) to design autonomous line-following robots capable of navigating complex tracks. With strict constraints on size, weight, voltage, and sensor configuration, participants engineered robots to handle switchbacks, intersections and sharp turns. The emphasis on autonomy and hardware originality made it one of the most technically demanding events of the symposium.

The valedictory ceremony began with the lighting of the ceremonial lamp by the esteemed Chief Guest, Ms Shweta Khurana, Director of Intel (Asia Pacific and Japan), the Principal, Mr Anil Kumar, the Vice Principals, Mr Mukesh Kumar, Mr Naresh Miglani, Mr Anil Kathuria and Ms Rashmi Malhotra and the Headmistress, Dr Anubha Gopal.

In his address, the Principal, Mr Anil Kumar, congratulated the participants for their enthusiasm and praised the EXUN clan for its network of alumni, its history and achievements. He commended the club organising such events which nurture young geniuses and entrepreneurs. He highlighted the club’s motto, “We Not I,” embodies the spirit of true collaboration and collective growth. Concluding his address, he encouraged the participants to keep striving for excellence, evolve with purpose, and prepare themselves to lead the nation toward a more progressive and developed future.

The Vice Principal and the founder of the EXUN clan, Mr Mukesh Kumar, reminisced about the formative years of EXUN and its past members who have grown to become leaders in their fields. He emphasized the ability of critical thinking of the human mind over artificial intelligence. He congratulated all the participants for their contributions to the success of EXUN 2025 and expressed his hope that the participating schools will come together to organise an even larger and more enriching symposium in the future.

The Chief Guest, Ms. Shweta Khurana, Director for Asia Pacific and Japan at Intel, commended the school and the EXUN clan for their exemplary spirit of collaboration. She expressed her admiration for the insightful experiences shared by the club presidents and extended her appreciation to the participants for their enthusiasm and active engagement. She concluded her address by quoting Robert Noyce, one of Intel’s founders: “Don’t be encumbered by history. Go out and do something wonderful.”

Thereafter, the winners and judges were felicitated for their achievements and contributions. The event concluded on a successful note with the Vote of Thanks acknowledging the collective efforts that made the programme possible, and the ceremony drew to a close with the National Anthem, invoking a sense of unity and honour. 

Delhi Public School, Vasant Kunj were declared as the overall winners. 

The winners of the individual events this year were as follows:

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Closing Ceremony