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
Chars
Time
Submitted
Mandelbrot
elgan65536
251
149ms
18 hours ago
Set
elgan65536
254
278ms
19 hours ago
Partition Numbers
elgan65536
131
3,599ms
21 hours ago
Kaprekar Numbers
elgan65536
109
192ms
21 hours ago
Zeckendorf Representation
elgan65536
186
170ms
21 hours ago
N Queens
elgan65536
210
154ms
21 hours ago
Factorial Factorisation
elgan65536
149
133ms
21 hours ago
Farey Sequence
elgan65536
102
131ms
21 hours ago
Rijndael S-box
elgan65536
238
127ms
21 hours ago
ln 2
elgan65536
245
123ms
21 hours ago
γ
elgan65536
257
124ms
22 hours ago
Hexdump
elgan65536
284
183ms
22 hours ago
Time Distance
elgan65536
418
217ms
22 hours ago
ASCII Table
elgan65536
144
129ms
22 hours ago
Catalan Numbers
elgan65536
294
189ms
22 hours ago
Catalan’s Constant
elgan65536
247
121ms
22 hours ago
Foo Fizz Buzz Bar
elgan65536
160
121ms
22 hours ago
Happy Numbers (Long)
elgan65536
122
129ms
22 hours ago
QR Decoder
elgan65536
385
168ms
22 hours ago
Star Wars Opening Crawl
elgan65536
581
261ms
22 hours ago
Van Eck Sequence
elgan65536
117
153ms
22 hours ago
Kolakoski Sequence
elgan65536
104
162ms
22 hours ago
Kolakoski Constant
elgan65536
252
119ms
22 hours ago
Recamán
elgan65536
121
153ms
22 hours ago
Look and Say
elgan65536
179
154ms
22 hours ago
Vampire Numbers
elgan65536
200
1,581ms
22 hours ago
√2
elgan65536
257
126ms
23 hours ago
Cubes
elgan65536
287
154ms
23 hours ago
Sudoku
elgan65536
653
330ms
23 hours ago
Rule 110
elgan65536
124
241ms
23 hours ago
λ
elgan65536
251
128ms
23 hours ago
12 Days of Christmas
elgan65536
496
165ms
23 hours ago
τ
elgan65536
254
130ms
23 hours ago
φ
elgan65536
246
126ms
23 hours ago
Sierpiński Triangle
elgan65536
114
141ms
23 hours ago
𝑒
elgan65536
250
125ms
23 hours ago
Fibonacci
elgan65536
🥇
64
121ms
23 hours ago
Pascal’s Triangle
elgan65536
113
133ms
23 hours ago
π
elgan65536
244
122ms
23 hours ago
Tutorial
elgan65536
103
163ms
24 hours ago
Minesweeper
acotis
💎
186
178ms
27 hours ago
Tower of Hanoi
elgan65536
98
129ms
32 hours ago
Morse Encoder
acotis
🥈
192
155ms
37 hours ago
Fibonacci
voytxt
67
121ms
44 hours ago
Fizz Buzz
voytxt
125
134ms
44 hours ago
Sierpiński Triangle
sean-niemann
🥉
85
121ms
2 days ago
Fibonacci
nyoshe
72
122ms
3 days ago
Arrows
Vianpyro
304
154ms
3 days ago
99 Bottles of Beer
Vianpyro
493
125ms
3 days ago
Evil Numbers
edsrzf
64
124ms
3 days ago
Multitap Input
acotis
💎
152
163ms
4 days ago
Partition Numbers
edsrzf
92
132ms
4 days ago
Fibonacci
Vianpyro
71
117ms
4 days ago
π
Vianpyro
406
168ms
4 days ago
12 Days of Christmas
Vianpyro
570
128ms
4 days ago
Tutorial
FortuiteMan
231
149ms
5 days ago
Fibonacci
helbling
69
116ms
5 days ago
Arrows
acotis
🥈
151
146ms
6 days ago
Quine
plcc0
🥇
45
108ms
6 days ago
Tutorial
StefanHabel
128
151ms
6 days ago
π
JOrE20
1,050
107ms
6 days ago
τ
JOrE20
1,050
107ms
6 days ago
Multitap Input
dokutan
558
298ms
6 days ago
Farey Sequence
dokutan
161
119ms
7 days ago
Fibonacci
Heathcorp
65
123ms
7 days ago
Look and Say
JayXon
💎
129
133ms
7 days ago
Multitap Input
edsrzf
🥉
166
173ms
7 days ago
Look and Say
edsrzf
🥈
130
196ms
7 days ago
Multitap Input
madex
210
160ms
7 days ago
Collatz
JohnSwiftC
111
126ms
8 days ago
Fibonacci
RobertHoeh
83
125ms
9 days ago
Fibonacci
albanian-laundromat
78
118ms
10 days ago
Kolakoski Constant
JOrE20
1,050
113ms
11 days ago
ROT13
edsrzf
121
164ms
11 days ago
Trinomial Triangle
acotis
127
131ms
12 days ago
Fibonacci
Andrey2001
75
133ms
14 days ago
π
Andrey2001
1,023
117ms
14 days ago
Prime Numbers (Long)
edsrzf
🥇
67
134ms
14 days ago
Multitap Input
kumavale
🥈
155
168ms
15 days ago
Topological Sort
albanian-laundromat
🥈
252
288ms
16 days ago