CodeAbbey - programming problems

There is not one of you who cannot
win The Kingdom!

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
Fastest Clearance #492
Lucky Number Scores #491
Circuit Board Connections #490
TV Charity Fundraiser #489
Accurate Curve Fitting #488
Reduce and Equalise #487
Two Colour Special Nim #486

- 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:

Intel 4004 emulator problems?

from homerjay79, last homerjay79

last at May 1 2026 13:24

Are we supposed to be able to adjust input for problems?

from Mittens, last Rodion (admin)

last at Apr 29 2026 06:52

Problem 30 is currently impossible in brainfuck

from KingSweat, last Rodion (admin)

last at Apr 29 2026 06:51

Fastest Clearance - A Proposed New Problem

from CSFPython, last CSFPython

last at Apr 28 2026 07:48

Lucky Number Scores - A Proposed New Problem

from CSFPython, last Rodion (admin)

last at Apr 14 2026 08:03