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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
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Highly Composite Numbers
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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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Hole
Golfer
Bytes
Time
Submitted
Polyominoes
SwordF-Official
400
180ms
16 hours ago
12 Days of Christmas
dvckyduck
486
3ms
29 hours ago
Tower of Hanoi
SwordF-Official
92
3ms
39 hours ago
Inventory Sequence
SwordF-Official
102
9ms
39 hours ago
Mandelbrot
SwordF-Official
131
187ms
40 hours ago
Fibonacci
SwordF-Official
43
3ms
40 hours ago
Tutorial
FortuiteMan
145
4ms
5 days ago
Multitap Input
dokutan
149
4ms
13 days ago
π
Andrey2001
1,011
3ms
14 days ago
Fibonacci
Andrey2001
43
3ms
15 days ago
Tutorial
Mefred
145
4ms
24 days ago
Diamonds
dokutan
138
3ms
25 days ago
Gray Code Decoder
GolfingSuccess
71
28ms
27 days ago
Fibonacci
plcc0
43
4ms
27 days ago
Tutorial
frosster
71
3ms
10 Jan 2026
Tutorial
dokutan
70
4ms
9 Jan 2026
Semiprime Numbers
mwarvik
12,799
2ms
7 Jan 2026
𝑒
JOrE20
1,009
5ms
5 Jan 2026
Tutorial
HumanoidCPU
65
5ms
1 Jan 2026
Hexagonal Spiral
bitsandbeyond
261
5ms
24 Dec 2025
Number Spiral
HumanoidCPU
140
3ms
24 Dec 2025
Kolakoski Sequence
HumanoidCPU
170
4ms
23 Dec 2025
Van Eck Sequence
HumanoidCPU
161
5ms
23 Dec 2025
99 Bottles of Beer
HumanoidCPU
527
2ms
23 Dec 2025
Recamán
HumanoidCPU
156
3ms
23 Dec 2025
Roman to Arabic
HumanoidCPU
247
7ms
23 Dec 2025
Smith Numbers
HumanoidCPU
417
116ms
21 Dec 2025
Odious Numbers
dokutan
72
2ms
14 Dec 2025
Evil Numbers
dokutan
72
2ms
14 Dec 2025
Emojify
dokutan
197
3ms
14 Dec 2025
Pernicious Numbers
snoozingnewt
51
2ms
8 Dec 2025
Hexagonal Spiral
HumanoidCPU
1,143
2ms
5 Dec 2025
Rule 110
HumanoidCPU
15,860
3ms
5 Dec 2025
Polyominoes
HumanoidCPU
3,572
3ms
5 Dec 2025
Niven Numbers
snoozingnewt
47
3ms
4 Dec 2025
Mandelbrot
dokutan
533
3ms
1 Dec 2025
Sierpiński Triangle
dokutan
227
3ms
1 Dec 2025
Apéry’s Constant
HumanoidCPU
1,009
3ms
1 Dec 2025
Tower of Hanoi
KatieLG
4,095
3ms
30 Nov 2025
Tower of Hanoi
HumanoidCPU
92
3ms
29 Nov 2025
Happy Numbers
snoozingnewt
80
3ms
29 Nov 2025
Tower of Hanoi
dokutan
71
3ms
28 Nov 2025
𝑒
BREMAUCY
1,009
3ms
27 Nov 2025
Taxicab Numbers
HumanoidCPU
4,168
3ms
27 Nov 2025
Emirp Numbers (Long)
dokutan
132
984ms
26 Nov 2025
Taxicab Numbers
Shanethegamer
4,168
3ms
26 Nov 2025
Smooth Numbers
Shanethegamer
85
48ms
24 Nov 2025
Tutorial
MeWhenI
65
3ms
23 Nov 2025
Arithmetic Numbers
HumanoidCPU
103
1,143ms
23 Nov 2025
Smooth Numbers
GolfingSuccess
84
1,070ms
23 Nov 2025
ISBN
HumanoidCPU
112
3ms
22 Nov 2025
Leap Years
HumanoidCPU
60
3ms
22 Nov 2025
Prime Numbers
HumanoidCPU
71
3ms
21 Nov 2025
Prime Numbers (Long)
HumanoidCPU
72
465ms
21 Nov 2025
𝑒
KatieLG
1,011
3ms
21 Nov 2025
√2
KatieLG
1,011
3ms
21 Nov 2025
φ
KatieLG
1,011
3ms
21 Nov 2025
τ
KatieLG
1,011
3ms
21 Nov 2025
π
KatieLG
1,011
3ms
21 Nov 2025
λ
KatieLG
1,011
3ms
21 Nov 2025
γ
KatieLG
1,011
3ms
21 Nov 2025
Van Eck Sequence
KatieLG
3,562
3ms
21 Nov 2025
Vampire Numbers
KatieLG
1,233
3ms
21 Nov 2025
Trinomial Triangle
KatieLG
2,094
3ms
21 Nov 2025
Tongue-twisters
KatieLG
544
3ms
21 Nov 2025
Sphenic Numbers
KatieLG
10,667
3ms
21 Nov 2025
Smith Numbers
KatieLG
2,207
3ms
21 Nov 2025
Sierpiński Triangle
KatieLG
577
3ms
21 Nov 2025
Semiprime Numbers
KatieLG
15,421
3ms
21 Nov 2025
Rule 110
KatieLG
15,959
3ms
21 Nov 2025
Rijndael S-box
KatieLG
791
3ms
21 Nov 2025
Recamán
KatieLG
1,154
3ms
21 Nov 2025
Prime Numbers (Long)
KatieLG
7,184
3ms
21 Nov 2025
Prime Numbers
KatieLG
103
4ms
21 Nov 2025
Polyominoes
KatieLG
4,837
3ms
21 Nov 2025
Polygon Triangulations
KatieLG
4,515
3ms
21 Nov 2025
Pernicious Numbers (Long)
KatieLG
24,921
3ms
21 Nov 2025
Pernicious Numbers
KatieLG
142
4ms
21 Nov 2025
Pascal’s Triangle
KatieLG
796
3ms
21 Nov 2025
Partition Numbers
KatieLG
754
3ms
21 Nov 2025