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Hy
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Arabic to Roman
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Arrows
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ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Connect Four
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Multitap Input
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)
Taxicab Numbers
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
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
Chess960 Decoder
Chess960 Encoder
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
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Semiprime Numbers
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Snake
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Tutorial
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Hole
Golfer
Chars
Time
Submitted
Happy Numbers (Long)
sisyphus-ppcg
72
618ms
12 days ago
Happy Numbers (Long)
dokutan
65
608ms
14 Mar 2026
Happy Numbers (Long)
Steffan153
🥉
61
497ms
26 Feb 2026
Happy Numbers (Long)
Andrey2001
86
560ms
28 Jan 2026
Happy Numbers (Long)
sean-niemann
🥉
61
569ms
30 Dec 2025
Happy Numbers (Long)
TheZwierzLF
125
533ms
20 Dec 2025
Happy Numbers (Long)
Babafaba
66
619ms
3 Nov 2025
Happy Numbers (Long)
CheeseCake628
114
528ms
18 Oct 2025
Happy Numbers (Long)
kg583
🥉
61
525ms
15 Oct 2025
Happy Numbers (Long)
albanian-laundromat
68
453ms
7 Oct 2025
Happy Numbers (Long)
snoozingnewt
66
685ms
28 Sep 2025
Happy Numbers (Long)
CaedenHarper
77
660ms
14 Jul 2025
Happy Numbers (Long)
emgordon154
62
653ms
16 Apr 2025
Happy Numbers (Long)
GolfingSuccess
63
492ms
25 Jan 2025
Happy Numbers (Long)
JunkIce
76
449ms
3 Dec 2024
Happy Numbers (Long)
lifthrasiir
65
395ms
2 Dec 2024
Happy Numbers (Long)
KatieLG
65
683ms
28 Oct 2024
Happy Numbers (Long)
bizy-coder
73
1,012ms
3 Oct 2024
Happy Numbers (Long)
Mabeloid
89
399ms
18 Sep 2024
Happy Numbers (Long)
duckyluuk
65
590ms
29 Aug 2024
Happy Numbers (Long)
KatieLG-Transpiler
706
400ms
16 Aug 2024
Happy Numbers (Long)
GrayJoKing
63
682ms
23 Jul 2024
Happy Numbers (Long)
namelessiw
79
672ms
14 Jul 2024
Happy Numbers (Long)
pardouin
🥇
60
608ms
11 Jul 2024
Happy Numbers (Long)
Stockoh
89
478ms
24 Jun 2024
Happy Numbers (Long)
HumanoidCPU
84
442ms
23 Jun 2024
Happy Numbers (Long)
steffan-polygolf
103
500ms
8 Mar 2024
Happy Numbers (Long)
m42km
81
706ms
4 Feb 2024
Happy Numbers (Long)
JayXon
🥉
61
590ms
25 Jan 2024
Happy Numbers (Long)
m-tkach
75
517ms
20 Jan 2024
Happy Numbers (Long)
MeWhenI
79
547ms
17 Jan 2024
Happy Numbers (Long)
msbranicky
89
652ms
17 Jan 2024
Happy Numbers (Long)
AlephSquirrel
76
557ms
16 Jan 2024
Happy Numbers (Long)
Shanethegamer
66
677ms
16 Jan 2024
Happy Numbers (Long)
Lydxn
🥇
60
628ms
16 Jan 2024
Happy Numbers (Long)
Yewzir
83
588ms
15 Jan 2024
Happy Numbers (Long)
SirBogman
80
596ms
15 Jan 2024
Happy Numbers (Long)
commandz0
103
531ms
15 Jan 2024
Happy Numbers (Long)
ovs-code
73
960ms
15 Jan 2024
Happy Numbers (Long)
neel11235813
77
590ms
15 Jan 2024