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
><>
ALGOL 68
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
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
><>
ALGOL 68
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
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
Partition Numbers
tomh1012
202
397ms
2 mins ago
Partition Numbers
tomh1012
180
10ms
4 mins ago
γ
Lv0Sys
126
48ms
10 mins ago
Game of Life
tomh1012
226
18ms
18 mins ago
Rule 110
denkyuu1
93
43ms
21 mins ago
Fibonacci
dokutan
51
6ms
32 mins ago
Ordinal Numbers
tomh1012
106
19ms
35 mins ago
φ
dokutan
🥉
49
7ms
39 mins ago
SI Units
Lv0Sys
583
13ms
39 mins ago
ln 2
dokutan
52
11ms
40 mins ago
√2
dokutan
🥈
43
7ms
43 mins ago
𝑒
dokutan
🥈
42
8ms
44 mins ago
τ
dokutan
55
12ms
45 mins ago
π
dokutan
🥈
38
12ms
47 mins ago
Hexdump
tomh1012
248
426ms
53 mins ago
SI Units
Lv0Sys
510
13ms
54 mins ago
Tutorial
tsschepens
78
2ms
56 mins ago
CSS Colors
Natanaelel
589
59ms
64 mins ago
Evil Numbers (Long)
tsschepens
81
2ms
67 mins ago
Evil Numbers
tsschepens
79
2ms
68 mins ago
Hexdump
tomh1012
250
11ms
75 mins ago
Farey Sequence
tsschepens
127
2ms
95 mins ago
Tower of Hanoi
dokutan
💎
95
7ms
96 mins ago
Look and Say
tsschepens
152
2ms
97 mins ago
Prime Numbers
tsschepens
70
2ms
114 mins ago
Prime Numbers (Long)
tsschepens
70
10ms
114 mins ago
Medal Tally
Lv0Sys
137
11ms
2 hours ago
Medal Tally
Lv0Sys
133
10ms
2 hours ago
Fibonacci
plcc0
35
5ms
2 hours ago
Fibonacci
plcc0
🥇
28
190ms
2 hours ago
Card Number Validation
lukegustafson
90
20ms
2 hours ago
λ
blaztoma
🥈
188
1,722ms
3 hours ago
Fibonacci
plcc0
41
77ms
3 hours ago
Farey Sequence
MeWhenI
45
40ms
3 hours ago
Arrows
edsrzf
💎
110
11ms
3 hours ago
Arrows
edsrzf
🥈
104
2ms
3 hours ago
Zeckendorf Representation
albanian-laundromat
155
256ms
3 hours ago
λ
blaztoma
185
130ms
3 hours ago
Medal Tally
denkyuu1
154
35ms
4 hours ago
Zeckendorf Representation
albanian-laundromat
105
22ms
4 hours ago
φ
tatzyr
63
40ms
4 hours ago
√2
tatzyr
55
40ms
4 hours ago
Taxicab Numbers
canissimia
613
3,819ms
5 hours ago
Taxicab Numbers
kg583
118
2,811ms
5 hours ago
Gijswijt’s Sequence
Lv0Sys
159
851ms
5 hours ago
Leap Years
FranklinJiaChen
60
2ms
6 hours ago
Leap Years
FranklinJiaChen
90
2ms
6 hours ago
Foo Fizz Buzz Bar
KingSkyrock
88
11ms
6 hours ago
Zeckendorf Representation
albanian-laundromat
158
3ms
6 hours ago
Minesweeper
albanian-laundromat
🦄
393
19ms
6 hours ago
Evil Numbers
FranklinJiaChen
122
2ms
6 hours ago
Odious Numbers
FranklinJiaChen
121
2ms
6 hours ago
Van Eck Sequence
MeWhenI
58
11ms
6 hours ago
Connect Four
albanian-laundromat
231
21ms
7 hours ago
Fibonacci
plcc0
50
6ms
7 hours ago
Star Wars Opening Crawl
AstroOrbis
433
11ms
7 hours ago
Cubes
edsrzf
💎
213
7ms
7 hours ago
Connect Four
albanian-laundromat
287
4,437ms
7 hours ago
Continued Fractions
albanian-laundromat
106
2ms
7 hours ago
Tic-tac-toe
albanian-laundromat
108
49ms
7 hours ago
Mandelbrot
albanian-laundromat
141
408ms
7 hours ago
Card Number Validation
albanian-laundromat
72
2ms
7 hours ago
Multitap Input
albanian-laundromat
💎
102
3ms
7 hours ago
Christmas Trees
KingSkyrock
78
9ms
7 hours ago
N Queens
edsrzf
💎
164
10ms
8 hours ago
Kaprekar Numbers
KingSkyrock
105
4,924ms
8 hours ago
Tutorial
r-stem
81
15ms
9 hours ago
ISBN
AstroOrbis
215
11ms
9 hours ago
Ten-pin Bowling
AstroOrbis
279
11ms
9 hours ago
Evil Numbers (Long)
FranklinJiaChen
174
16ms
9 hours ago
Odious Numbers (Long)
FranklinJiaChen
173
16ms
9 hours ago
Collatz
FranklinJiaChen
169
83ms
9 hours ago
Fizz Buzz
FranklinJiaChen
149
2ms
9 hours ago
Leap Years
Chinay-Domitrix
🥈
45
2,170ms
10 hours ago
ISBN
edsrzf
🥈
119
7ms
10 hours ago
ROT13
GrayJoKing
🥈
117
11ms
10 hours ago
Minesweeper
edsrzf
🦄
160
32ms
10 hours ago
Niven Numbers (Long)
GrayJoKing
🥇
64
15ms
10 hours ago
DFA Simulator
GrayJoKing
🦄
186
240ms
10 hours ago
Card Number Validation
GrayJoKing
🥈
105
7ms
10 hours ago