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
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
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
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
05AB1E
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
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
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
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
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Fibonacci
ndren
87
60ms
27 hours ago
Tutorial
Natanaelel
133
2,125ms
31 hours ago
Divisors
Nwo5-trg
101
69ms
47 hours ago
Emojify
Nwo5-trg
305
59ms
2 days ago
Arithmetic Numbers
Nwo5-trg
113
128ms
2 days ago
Collatz
Nwo5-trg
105
62ms
2 days ago
Tutorial
yeminghan2021
112
63ms
2 days ago
Tongue-twisters
yeminghan2021
492
53ms
2 days ago
Calendar
dokutan
1,057
78ms
3 days ago
Card Number Validation
yeminghan2021
131
56ms
3 days ago
Evil Numbers
CosmicRaichu
88
62ms
3 days ago
Evil Numbers (Long)
CosmicRaichu
90
61ms
3 days ago
Odious Numbers (Long)
CosmicRaichu
87
61ms
3 days ago
Odious Numbers
CosmicRaichu
86
59ms
3 days ago
Niven Numbers (Long)
yeminghan2021
96
59ms
3 days ago
Prime Numbers (Long)
yeminghan2021
81
100ms
3 days ago
Quine
yeminghan2021
104
53ms
3 days ago
Tower of Hanoi
yeminghan2021
123
63ms
3 days ago
Multitap Input
yeminghan2021
162
66ms
3 days ago
Tutorial
FortuiteMan
395
2,117ms
3 days ago
Arabic to Roman
dokutan
205
2,388ms
4 days ago
Fizz Buzz
annihilateRed0
97
410ms
4 days ago
Maze
emgordon154
168
58ms
4 days ago
π
JOrE20
1,204
1,999ms
5 days ago
Zodiac Signs
dokutan
443
2,445ms
5 days ago
Diamonds
dokutan
155
399ms
5 days ago
Tic-tac-toe
bac0id
169
70ms
5 days ago
Tutorial
Carlos-EAC
147
1,007ms
5 days ago
Multitap Input
snyderek
💎
125
67ms
5 days ago
Multitap Input
sean-niemann
🥈
135
374ms
5 days ago
Partition Numbers
bac0id
106
65ms
6 days ago
Multitap Input
bac0id
🥉
151
365ms
6 days ago
ROT13
GolfingSuccess
104
387ms
6 days ago
Prime Numbers
novaspaced
101
62ms
7 days ago
Calendar
bac0id
274
392ms
7 days ago
ASCII Table
bac0id
158
57ms
7 days ago
Collatz
novaspaced
115
57ms
7 days ago
Divisors
zzz13579zzz
93
59ms
7 days ago
Prime Numbers
Andrey2001
112
61ms
8 days ago
Collatz
zzz13579zzz
104
61ms
8 days ago
Ascending Primes
zzz13579zzz
193
2,755ms
8 days ago
Arithmetic Numbers
zzz13579zzz
111
147ms
8 days ago
Abundant Numbers (Long)
zzz13579zzz
101
82ms
8 days ago
Abundant Numbers
zzz13579zzz
101
84ms
8 days ago
Christmas Trees
bac0id
124
394ms
9 days ago
Kolakoski Constant
JOrE20
1,111
2,047ms
9 days ago
Collatz
samuel-thesing
109
893ms
9 days ago
Fizz Buzz
samuel-thesing
118
945ms
9 days ago
Fizz Buzz
sh2824
184
944ms
9 days ago
Leap Years
bac0id
79
57ms
10 days ago
Multitap Input
bitsandbeyond
157
61ms
11 days ago
Partition Numbers
Andrey2001
145
66ms
11 days ago
brainfuck
Slonser
203
419ms
11 days ago
24 Game
Slonser
568
882ms
11 days ago
π
Andrey2001
1,035
53ms
12 days ago
Fibonacci
annihilateRed0
125
407ms
14 days ago
Diamonds
annihilateRed0
203
63ms
14 days ago
Tutorial
annihilateRed0
114
414ms
14 days ago
Card Number Validation
nwellnhof
🥉
105
390ms
15 days ago
Zeckendorf Representation
nwellnhof
125
393ms
15 days ago
12 Days of Christmas
sun2snow
2,405
50ms
15 days ago
Partition Numbers
nwellnhof
96
58ms
16 days ago
Fibonacci
kmathis22
82
1,954ms
17 days ago
Fibonacci
AstroOrbis
90
63ms
17 days ago
Poker
TeodorDyakov
🥉
346
1,004ms
18 days ago
Tutorial
itsquasiab
133
63ms
19 days ago
United States
HumanoidCPU
1,096
68ms
19 days ago
Abundant Numbers
itsquasiab
116
63ms
19 days ago
99 Bottles of Beer
itsquasiab
432
1,082ms
19 days ago
π
itsquasiab
1,040
56ms
20 days ago
Fizz Buzz
itsquasiab
143
987ms
20 days ago
12 Days of Christmas
itsquasiab
615
992ms
20 days ago
Tower of Hanoi
matejmatik123
142
947ms
21 days ago
Number Spiral
AngelSinigersky
638
1,129ms
21 days ago
Tutorial
Roachbones
395
2,174ms
21 days ago
Tutorial
Mefred
395
2,064ms
22 days ago
Abundant Numbers (Long)
samuel-thesing
105
917ms
22 days ago
Abundant Numbers
samuel-thesing
104
901ms
22 days ago
Pernicious Numbers (Long)
noahdorsch
432
991ms
24 days ago
Prime Numbers (Long)
noahdorsch
301
1,008ms
24 days ago