Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

🧩 Challenges · Numerical Analysis

Build it, break it, predict it, or recall it. Pick a challenge and prove you've got it.

📅 Today's Daily Challenge 🏆 Leaderboard
You're previewing the Arcade. Log in or create an account and enroll to keep your XP and personal bests.

predict bisection steps needed

predict
easy medium hard

spot the newton step slip

debug
easy medium hard

predict newtons method convergence

predict
easy medium hard

recall the bisection error bound

recall
easy medium hard

spot the simpsons weight slip

debug
easy medium hard

build a spd matrix

construct
easy medium hard

spot the pivot selection slip

debug
easy medium hard

predict well or ill conditioned

predict
easy medium hard

recall the condition number

recall
easy medium hard

build a diagonally dominant matrix

construct
easy medium hard

spot the jacobi update slip

debug
easy medium hard

predict jacobi convergence

predict
easy medium hard

recall diagonal dominance condition

recall
easy medium hard

predict power iteration eigenvalue estimate

predict
easy medium hard

recall the rk4 formula

recall
easy medium hard