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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
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
ArkScript
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
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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
√2
jusaka
🥈
153
153ms
a min ago
Star Wars GPT
mantaslu
157
28ms
3 mins ago
Tutorial
Nathan-Masala
83
4,474ms
5 mins ago
Snake
Natanaelel
112
56ms
6 mins ago
Minesweeper
jusaka
🥈
216
167ms
8 mins ago
Tutorial
Nathan-Masala
79
2ms
9 mins ago
Card Number Validation
blaztoma
54
37ms
9 mins ago
Tutorial
Nathan-Masala
131
3ms
11 mins ago
Smith Numbers
Matter1024
156
45ms
12 mins ago
Tutorial
Nathan-Masala
111
648ms
13 mins ago
Tutorial
Nathan-Masala
57
39ms
19 mins ago
Roman to Arabic
jusaka
144
234ms
22 mins ago
Sudoku
jusaka
535
307ms
22 mins ago
Farey Sequence
BrunoVisnadi
106
12ms
28 mins ago
Fizz Buzz
zgialor-lab
99
2ms
30 mins ago
𝑒
Matter1024
85
14ms
36 mins ago
τ
Matter1024
105
98ms
37 mins ago
π
Matter1024
105
99ms
37 mins ago
ln 2
Matter1024
90
40ms
37 mins ago
Collatz
CoderColby
107
1,328ms
38 mins ago
𝑒
Matter1024
67
60ms
41 mins ago
𝑒
Matter1024
65
10ms
42 mins ago
Fibonacci
Nathan-Masala
37
11ms
44 mins ago
Tutorial
Nathan-Masala
85
12ms
45 mins ago
Polyominoes
ahmetdemirag
280
27ms
47 mins ago
Fizz Buzz
zgialor-lab
62
10ms
48 mins ago
ln 2
Matter1024
98
1,130ms
51 mins ago
Tutorial
Nathan-Masala
69
11ms
54 mins ago
Fizz Buzz
zgialor-lab
84
2ms
60 mins ago
Reversi
jusaka
228
177ms
60 mins ago
Topological Sort
rucin93
🥈
179
32ms
64 mins ago
ln 2
Matter1024
83
70ms
65 mins ago
ln 2
Matter1024
71
11ms
65 mins ago
Medal Tally
prestosilver
235
383ms
74 mins ago
Star Wars GPT
Matter1024
185
13ms
83 mins ago
Catalan Numbers
madeforlosers
1,467
12ms
90 mins ago
99 Bottles of Beer
madeforlosers
5,974
18ms
92 mins ago
Hexdump
jusaka
252
229ms
92 mins ago
24 Game
madeforlosers
6,247
17ms
93 mins ago
Christmas Trees
madeforlosers
304
11ms
98 mins ago
Poker
jusaka
423
179ms
98 mins ago
λ
madeforlosers
531
11ms
98 mins ago
Rijndael S-box
madeforlosers
415
10ms
98 mins ago
Sierpiński Triangle
madeforlosers
308
11ms
99 mins ago
12 Days of Christmas
madeforlosers
1,220
12ms
99 mins ago
Number Spiral
madeforlosers
181
12ms
100 mins ago
ASCII Table
madeforlosers
167
18ms
100 mins ago
Kaprekar Numbers
madeforlosers
139
2,151ms
100 mins ago
Partition Numbers
madeforlosers
124
18ms
104 mins ago
Happy Numbers
madeforlosers
115
18ms
105 mins ago
Pernicious Numbers
madeforlosers
81
17ms
106 mins ago
Fizz Buzz
mantaslu
59
10ms
109 mins ago
Fractions
madeforlosers
98
19ms
110 mins ago
Jacobi Symbol
madeforlosers
118
18ms
111 mins ago
Continued Fractions
emplv
🥇
90
11ms
115 mins ago
Gijswijt’s Sequence
madeforlosers
98
450ms
118 mins ago
Rule 110
madeforlosers
90
18ms
119 mins ago
Emirp Numbers (Long)
madeforlosers
82
3,801ms
119 mins ago
Emirp Numbers
madeforlosers
81
39ms
119 mins ago
Medal Tally
jusaka
192
214ms
2 hours ago
Happy Numbers (Long)
madeforlosers
83
24ms
2 hours ago
Quine
zgialor-lab
254
2ms
2 hours ago
Christmas Trees
0jdxt
115
152ms
2 hours ago
Recamán
jusaka
105
135ms
2 hours ago
Star Wars GPT
Andriamanitra
141
3ms
2 hours ago
Ordinal Numbers
prestosilver
119
376ms
2 hours ago
Kolakoski Sequence
madeforlosers
65
12ms
2 hours ago
Hexdump
denkyuu1
266
339ms
2 hours ago
Multitap Input
denkyuu1
🥈
113
279ms
2 hours ago
Fizz Buzz
madeforlosers
71
18ms
2 hours ago
Pernicious Numbers (Long)
madeforlosers
67
28ms
2 hours ago
Transpose Sentence
denkyuu1
117
520ms
2 hours ago
Tower of Hanoi
mantaslu
74
12ms
2 hours ago
Calendar
blaztoma
💎
249
104ms
2 hours ago
Seven Segment
zgialor-lab
177
10ms
2 hours ago
Leap Years
madeforlosers
61
11ms
2 hours ago
Ten-pin Bowling
jusaka
214
164ms
2 hours ago
Arithmetic Numbers
madeforlosers
81
2,262ms
2 hours ago
√2
madeforlosers
64
12ms
3 hours ago
Pangram Grep
madeforlosers
90
18ms
3 hours ago