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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
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Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
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p-adic Expansion
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Snake
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Bytes
Time
Submitted
Happy Numbers (Long)
albanian-laundromat
134
246ms
2 days ago
Happy Numbers (Long)
CaedenHarper
🥇
130
270ms
15 days ago
Happy Numbers (Long)
KasperKivimaeki
🥇
130
252ms
4 Oct 2025
Happy Numbers (Long)
targrik
164
253ms
30 Jun 2025
Happy Numbers (Long)
0xjac
137
256ms
17 Jun 2025
Happy Numbers (Long)
heanyang1
175
264ms
29 May 2025
Happy Numbers (Long)
yhm138
363
263ms
17 Feb 2025
Happy Numbers (Long)
emgordon154
132
258ms
17 Jan 2025
Happy Numbers (Long)
LostSyntax21
149
263ms
8 Jan 2025
Happy Numbers (Long)
edsrzf
139
259ms
23 Oct 2024
Happy Numbers (Long)
Mabeloid
746
253ms
18 Sep 2024
Happy Numbers (Long)
HumanoidCPU
207
261ms
26 Aug 2024
Happy Numbers (Long)
rifatx
203
244ms
17 Jul 2024
Happy Numbers (Long)
msbranicky
131
258ms
1 Jul 2024
Happy Numbers (Long)
bastatom
132
262ms
27 Feb 2024
Happy Numbers (Long)
hrubymar10
134
268ms
27 Feb 2024
Happy Numbers (Long)
jared-hughes
🥇
130
259ms
27 Feb 2024
Happy Numbers (Long)
snoozingnewt
148
258ms
4 Feb 2024
Happy Numbers (Long)
Yewzir
🥇
130
256ms
9 Jan 2024
Happy Numbers (Long)
kkoenig
194
263ms
4 Jan 2024
Happy Numbers (Long)
sean-niemann
🥇
130
262ms
6 Dec 2023
Happy Numbers (Long)
Shanethegamer
🥇
130
255ms
21 Nov 2023
Happy Numbers (Long)
hotmanga
223
257ms
8 Nov 2023
Happy Numbers (Long)
jerrandolph
162
259ms
3 Nov 2023
Happy Numbers (Long)
dokutan
599
265ms
20 Oct 2023
Happy Numbers (Long)
stefangimmillaro
🥇
130
266ms
14 Jun 2023
Happy Numbers (Long)
nwellnhof
🥇
130
264ms
2 Mar 2023
Happy Numbers (Long)
MeWhenI
🥇
130
261ms
9 Feb 2023
Happy Numbers (Long)
DialFrost
149
263ms
28 Jan 2023
Happy Numbers (Long)
emplv
🥇
130
260ms
12 Jan 2023
Happy Numbers (Long)
kimbo
146
261ms
12 Jan 2023
Happy Numbers (Long)
retrohun
746
265ms
27 Dec 2022
Happy Numbers (Long)
Steffan153
🥇
130
250ms
3 Dec 2022
Happy Numbers (Long)
JRaspass
191
248ms
23 Sep 2022
Happy Numbers (Long)
KatieLG-Transpiler
601
259ms
24 Jun 2022
Happy Numbers (Long)
KatieLG
599
260ms
9 Apr 2022
Happy Numbers (Long)
j-Ewan
170
264ms
10 Mar 2022
Happy Numbers (Long)
ibeucaly
177
257ms
20 Nov 2021
Happy Numbers (Long)
Lydxn
🥇
130
261ms
2 Oct 2021
Happy Numbers (Long)
janbehrens
140
263ms
20 Sep 2021
Happy Numbers (Long)
JayXon
🥇
130
264ms
20 Sep 2021