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Recent Solutions
Achievements
Cheevos
Golfers
Solutions
All Holes
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
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
Apéry’s Constant
Binary Lambda Calculus
Calendar
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
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><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Hole
All
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
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
Calendar
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
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Tower of Hanoi
emgordon154
86
17ms
19 hours ago
Lucky Numbers
kg583
💎
95
73ms
37 hours ago
Game of Life
kg583
147
15ms
38 hours ago
Levenshtein Distance
kg583
🥉
159
1,399ms
2 days ago
γ
JOrE20
1,012
7ms
4 days ago
Tower of Hanoi
gigaprofisi
3,600
7ms
4 days ago
Abundant Numbers (Long)
DialFrost
🥇
73
54ms
6 days ago
Abundant Numbers
DialFrost
73
9ms
6 days ago
Repeating Decimals
edsrzf
🥇
112
10ms
7 days ago
Morse Encoder
edsrzf
🥈
203
8ms
8 days ago
Morse Encoder
kg583
💎
192
7ms
8 days ago
Niven Numbers
snoozingnewt
66
7ms
9 days ago
λ
JOrE20
1,011
7ms
9 days ago
Morse Decoder
edsrzf
💎
147
7ms
9 days ago
Day of Week
snoozingnewt
🥇
66
12ms
9 days ago
Number Spiral
edsrzf
137
8ms
10 days ago
Prime Numbers
tomh1012
90
8ms
10 days ago
Seven Segment
edsrzf
💎
139
9ms
10 days ago
Arrows
kg583
182
8ms
11 days ago
Maze
kg583
164
18ms
11 days ago
Maze
edsrzf
💎
143
18ms
11 days ago
Arrows
snoozingnewt
178
8ms
11 days ago
Continued Fractions
Shanethegamer
208
11ms
12 days ago
Tower of Hanoi
retrohun
3,585
7ms
12 days ago
λ
edsrzf
💎
202
1,470ms
13 days ago
λ
zacjl
🥈
213
3,842ms
13 days ago
Multitap Input
Shanethegamer
168
9ms
15 days ago
Tower of Hanoi
Schmitt-Very-Cool
99
8ms
15 days ago
Multitap Input
kg583
131
10ms
15 days ago
Inventory Sequence
kg583
🥈
85
17ms
16 days ago
Diamonds
edsrzf
💎
103
8ms
17 days ago
Morse Decoder
kg583
🥈
176
6ms
17 days ago
Tower of Hanoi
msbranicky
108
8ms
17 days ago
Tongue-twisters
prestosilver
533
8ms
18 days ago
Tower of Hanoi
aksyristos
148
9ms
18 days ago
ln 2
edsrzf
🥈
69
138ms
18 days ago
Tower of Hanoi
BREMAUCY
99
7ms
19 days ago
Tower of Hanoi
blaztoma
91
10ms
19 days ago
Ascending Primes
edsrzf
💎
97
4,365ms
19 days ago
Tower of Hanoi
JOrE20
9,708
11ms
20 days ago
Van Eck Sequence
dokutan
188
122ms
20 days ago
24 Game
dokutan
🥉
358
3,471ms
20 days ago
Tower of Hanoi
dokutan
🥉
83
11ms
20 days ago
PalindromemordnilaP
edsrzf
🥇
87
6ms
20 days ago
Tower of Hanoi
edsrzf
💎
73
9ms
20 days ago
Tower of Hanoi
snoozingnewt
87
10ms
20 days ago
Evil Numbers
snoozingnewt
51
6ms
20 days ago
Emirp Numbers
snoozingnewt
84
6ms
20 days ago
Odious Numbers
snoozingnewt
🥇
48
6ms
20 days ago
Happy Numbers
snoozingnewt
🥇
64
7ms
20 days ago
Tower of Hanoi
albanian-laundromat
89
10ms
20 days ago
Tower of Hanoi
AlephSquirrel
105
8ms
20 days ago
Tower of Hanoi
Yewzir
94
11ms
21 days ago
Tower of Hanoi
GolfingSuccess
98
8ms
21 days ago
Tower of Hanoi
KatieLG
3,585
5ms
21 days ago
Time Distance
kg583
💎
259
10ms
21 days ago
ISBN
kg583
122
8ms
21 days ago
Tower of Hanoi
CaedenHarper
121
10ms
21 days ago
ROT13
kg583
🥉
107
25ms
22 days ago
Hexdump
kg583
🥈
175
38ms
22 days ago
Intersection
edsrzf
💎
123
26ms
22 days ago
Hilbert Curve
kg583
💎
376
11ms
22 days ago
Emirp Numbers (Long)
kg583
🥈
111
35ms
23 days ago
Fizz Buzz
kg583
80
7ms
24 days ago
Taxicab Numbers
kg583
113
205ms
24 days ago
Taxicab Numbers
HumanoidCPU
4,168
5ms
24 days ago
Lucky Tickets
edsrzf
🥈
150
26ms
24 days ago
Fibonacci
Andrey2001
53
5ms
25 days ago
Taxicab Numbers
Shanethegamer
4,168
5ms
25 days ago
Mandelbrot
kg583
🥈
144
3,756ms
25 days ago
Factorial Factorisation
kg583
🥇
142
9ms
26 days ago
Ascending Primes
kg583
101
3,772ms
26 days ago
Prime Numbers (Long)
kg583
🥇
60
32ms
26 days ago
Lucky Tickets
kg583
🥉
167
8ms
26 days ago
Time Distance
Shanethegamer
🥈
263
11ms
26 days ago
Smith Numbers
edsrzf
🥉
175
1,469ms
26 days ago
Musical Chords
edsrzf
💎
173
11ms
27 days ago
Catalan Numbers
kg583
59
6ms
27 days ago
ASCII Table
kg583
129
6ms
23 Nov 2025
𝑒
kg583
70
12ms
23 Nov 2025