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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
Calendar
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
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)
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
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
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Semiprime Numbers
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Snake
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Tutorial
Hole
Golfer
Chars
Time
Submitted
Pascal’s Triangle
Nxllpointer
23
3ms
6 hours ago
Factorial Factorisation
Nxllpointer
44
4ms
6 hours ago
Lucky Tickets
KatieLG
109
5ms
6 days ago
Pangram Grep
ndren
23
3ms
6 days ago
Leyland Numbers
Shanethegamer
23
6ms
7 days ago
Leap Years
voytxt
26
3ms
8 days ago
Morse Decoder
AlephSquirrel
116
3ms
8 days ago
Tutorial
FortuiteMan
80
3ms
11 days ago
ROT13
commandz0
33
7ms
12 days ago
Ordinal Numbers
commandz0
57
6ms
12 days ago
Minesweeper
commandz0
59
20ms
12 days ago
Fractions
commandz0
29
4ms
12 days ago
Fizz Buzz
danielkoning
50
3ms
14 days ago
Fibonacci
plcc0
14
2ms
15 days ago
Look and Say
plcc0
19
2ms
15 days ago
Pascal’s Triangle
commandz0
21
2ms
15 days ago
Set
commandz0
39
21ms
15 days ago
Multitap Input
KatieLG
48
11ms
15 days ago
ISBN
commandz0
40
4ms
16 days ago
Prime Numbers
commandz0
16
2ms
16 days ago
Rule 110
commandz0
36
11ms
17 days ago
Number Spiral
commandz0
33
3ms
17 days ago
Collatz
commandz0
29
1,693ms
17 days ago
Intersection
commandz0
39
5ms
17 days ago
Fizz Buzz
commandz0
37
3ms
18 days ago
Multitap Input
commandz0
39
8ms
18 days ago
Medal Tally
commandz0
56
7ms
18 days ago
π
Andrey2001
1,006
2ms
20 days ago
Proximity Grid
commandz0
83
74ms
20 days ago
Odious Numbers (Long)
commandz0
12
6ms
20 days ago
Odious Numbers
commandz0
11
3ms
20 days ago
N Queens
commandz0
36
188ms
20 days ago
Fractions
ovs-code
30
41ms
20 days ago
Multitap Input
ovs-code
36
5ms
20 days ago
Sudoku (Fill-in)
commandz0
125
261ms
21 days ago
Collatz
plcc0
37
174ms
21 days ago
Prime Numbers
plcc0
18
3ms
21 days ago
Tutorial
dokutan
35
3ms
21 days ago
brainfuck
ndren
164
1,535ms
21 days ago
ASCII Table
commandz0
81
3ms
23 days ago
Day of Week
commandz0
43
6ms
23 days ago
Diamonds
padril
54
4ms
24 days ago
ln 2
commandz0
584
3ms
24 days ago
Evil Numbers (Long)
commandz0
14
6ms
24 days ago
Evil Numbers
commandz0
12
3ms
24 days ago
Diamonds
commandz0
36
4ms
24 days ago
Evil Numbers (Long)
NicoBliss
16
3ms
24 days ago
Evil Numbers
NicoBliss
14
3ms
24 days ago
ln 2
NicoBliss
995
3ms
25 days ago
Diamonds
NicoBliss
57
4ms
25 days ago
Multitap Input
AlephSquirrel
40
3ms
25 days ago
Kolakoski Sequence
padril
43
8ms
25 days ago
Fibonacci
padril
12
2ms
25 days ago
Pascal’s Triangle
padril
40
3ms
25 days ago
Odious Numbers (Long)
Nxllpointer
14
3ms
26 days ago
Prime Numbers
Nxllpointer
18
2ms
26 days ago
Vampire Numbers
Nxllpointer
1,383
2ms
26 days ago
Pangram Grep
Nxllpointer
25
3ms
27 days ago
Happy Numbers (Long)
Nxllpointer
23
3ms
27 days ago
Happy Numbers
Nxllpointer
22
3ms
27 days ago
Divisors
Nxllpointer
23
3ms
27 days ago
Arithmetic Numbers
Nxllpointer
27
839ms
27 days ago
Niven Numbers (Long)
Nxllpointer
22
19ms
27 days ago
Pascal’s Triangle
ndren
23
3ms
17 Jan 2026
Look and Say
Nxllpointer
18
4ms
17 Jan 2026
Tutorial
Mefred
80
4ms
15 Jan 2026
Niven Numbers
yanqui-uxo
23
3ms
13 Jan 2026
Kolakoski Sequence
ndren
30
3ms
12 Jan 2026
Card Number Validation
NicoBliss
47
8ms
11 Jan 2026
Reverse Polish Notation
KatieLG
78
7ms
11 Jan 2026
Spelling Numbers
KatieLG
31,452
21ms
11 Jan 2026
SI Units
KatieLG
14,262
16ms
11 Jan 2026
Rock-paper-scissors-Spock-lizard
KatieLG
410
3ms
11 Jan 2026
Musical Chords
KatieLG
4,847
9ms
11 Jan 2026
Flags
KatieLG
3,925
8ms
11 Jan 2026
Emojify
KatieLG
230
4ms
11 Jan 2026
CSS Colors (Inverse)
KatieLG
2,799
5ms
11 Jan 2026
CSS Colors
KatieLG
2,973
6ms
11 Jan 2026
Billiards
KatieLG
13,836
6ms
11 Jan 2026
Taxicab Numbers
KatieLG
4,647
2ms
10 Jan 2026