CodeAbbey - programming problems

We believe that three things lead to success:
Practice, Practice and Practice!

Login (register) with Username and Password

or else

Login with GitHub

Login with Google

Everyone can win Free Programming Certificate here
How this works, what is inside? Watch author's demo!

Latest problems
Circuit Board Connections #490
TV Charity Fundraiser #489
Accurate Curve Fitting #488
Reduce and Equalise #487
Two Colour Special Nim #486
Magic 3 #485
A Message from Deep Space #484

- we proudly collect logos of the Universities which actively use CodeAbbey

Login (register) with Username and Password

or else

Login with GitHub

Login with Google

Top Brethren and Sistren of the Week

(see best of all times)

User	Rank	Solved

Recent at Forums:

The input data for Problem 368 contains an error

from kajuyone, last CSFPython

last at Apr 5 2026 15:57

Google login issue again

from Rodion (admin), last Rodion (admin)

last at Apr 4 2026 20:51

Bug with validation of solutions for 207 Suffix array

from damian_zb, last Rodion (admin)

last at Mar 31 2026 23:17

Circuit Board Connections - A Proposed New Problem

from CSFPython, last Rodion (admin)

last at Mar 31 2026 07:09

Request to Update Username and Login Method

from aLeeTheY, last Rodion (admin)

last at Mar 26 2026 11:15