DAIBUTSU is an online platform where daily soroban practice and real international competition live in one place. An ordinary Tuesday in your classroom can become a world stage.
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In July 2026, DAIBUTSU powered the first WORLD ANZAN CLASSIC Online, organised by JISA.
Competitors from six countries — Japan, Vietnam, the Philippines, Algeria, Poland and Indonesia —
sat the same problems under the same rules, scored automatically on the server in real time.
The system that ran that championship is the same one your school uses on an ordinary weekday.
Students enter a 4-digit room code from the teacher. The tension of a leaderboard moving live — in class or at home.
Addition, multiplication, division, flash anzan, ten-key and exam formats. Practise at your own pace, any time.
Scores, streaks and weak points are recorded. The AI Master Daibutsu gently points to the next step.
The teacher opens a room; students join with four digits. Speed races, survival, team battles, marathons and one-on-one duels. Schedule ahead or repeat weekly in one click.
Four digits, and you are on the same floor as the world.
Digits appear one after another; students add them in their head. The live elimination format is genuinely thrilling, with cheering and big-screen broadcast. Speed and accuracy grow while they are having fun.
Every result is saved automatically across all disciplines. The AI reads accuracy per discipline, finds where the room to grow is, and shows the next step kindly — never scolding.
Full-length timed papers in the official format, or drill one discipline at a time. Marking is automatic, results are kept per federation, with pass-rate prediction and weak-point analysis. Teachers see the whole class at a glance.
HERO CAM, TOP 10, a commentary ticker, country-by-country cheering. A 100-player live leaderboard or a flash anzan elimination battle looks the part on a projector or a stream. Parents watch and cheer from their phones. A child’s name is shown only with a guardian’s consent — otherwise it is anonymised.
Every point moves a horse down the track, so the whole room can follow the standings at a glance — who is about to win, and who is one answer away from the podium. Children and adults alike lean forward.
Schools outside Japan get full access for 14 days from registration — competitions, exam practice, saved results and the AI advice. No credit card to start. If it does not fit your school, simply stop.
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An email address and a few minutes. The 14-day trial starts immediately.
A QR code, a link or a printable PDF made for your school — nobody gets lost.
Pick the problems and open the room. Your classroom is now a competition venue.
By invitation from your teacher, or on your own. Works like an app on a tablet or phone.
Addition, multiplication, division, flash. Your record starts from today.
Watch the ranking move as you answer. It is hard to forget.
One problem today. Ten tomorrow. A thousand next year.
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Not sure yet? Start with a demo: Live competition · Flash broadcast · Try the world championship