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
Divisors
scpchicken
60
12ms
a min ago
Diamonds
scpchicken
117
10ms
2 mins ago
Alphabetic Numbers
stefangimmillaro
273
35ms
3 mins ago
Emirp Numbers (Long)
scpchicken
115
44ms
4 mins ago
Emirp Numbers
scpchicken
115
11ms
5 mins ago
Gray Code Decoder
scpchicken
62
12ms
6 mins ago
Gray Code Encoder
scpchicken
🥇
44
12ms
7 mins ago
Farey Sequence
scpchicken
74
12ms
9 mins ago
Fizz Buzz
teebee
83
7ms
9 mins ago
Kolakoski Sequence
scpchicken
82
10ms
10 mins ago
Kolakoski Sequence
scpchicken
131
3ms
11 mins ago
Farey Sequence
scpchicken
84
3ms
14 mins ago
Pascal’s Triangle
Steffan153
46
3ms
16 mins ago
Trinomial Triangle
Steffan153
💎
56
4ms
16 mins ago
Smith Numbers
scpchicken
128
63ms
16 mins ago
Emirp Numbers (Long)
scpchicken
159
11ms
20 mins ago
Emirp Numbers
scpchicken
159
2ms
20 mins ago
Fibonacci
emgordon154
134
1,641ms
22 mins ago
Gray Code Decoder
scpchicken
92
4ms
23 mins ago
Gray Code Encoder
scpchicken
100
13ms
24 mins ago
Abundant Numbers (Long)
scpchicken
79
3ms
28 mins ago
Abundant Numbers
scpchicken
78
2ms
28 mins ago
Pernicious Numbers
scpchicken
102
2ms
31 mins ago
Pernicious Numbers (Long)
scpchicken
105
5ms
31 mins ago
Lucky Numbers
scpchicken
166
3ms
35 mins ago
Collatz
scpchicken
🥉
83
404ms
42 mins ago
Niven Numbers
scpchicken
87
407ms
42 mins ago
Niven Numbers (Long)
scpchicken
87
412ms
43 mins ago
Emirp Numbers (Long)
scpchicken
177
508ms
44 mins ago
Emirp Numbers
scpchicken
177
456ms
44 mins ago
Prime Numbers (Long)
scpchicken
79
465ms
45 mins ago
Prime Numbers
scpchicken
78
411ms
45 mins ago
Divisors
scpchicken
71
2ms
46 mins ago
Divisors
scpchicken
89
443ms
46 mins ago
Leap Years
cuvam
53
18ms
47 mins ago
Collatz
scpchicken
62
11ms
48 mins ago
Prime Numbers (Long)
scpchicken
53
23ms
50 mins ago
Prime Numbers (Long)
scpchicken
78
445ms
50 mins ago
Prime Numbers
scpchicken
77
459ms
51 mins ago
Divisors
scpchicken
90
399ms
53 mins ago
Divisors
scpchicken
76
3ms
56 mins ago
Foo Fizz Buzz Bar
scpchicken
130
3ms
57 mins ago
Divisors
scpchicken
96
524ms
58 mins ago
Foo Fizz Buzz Bar
scpchicken
155
441ms
60 mins ago
Foo Fizz Buzz Bar
scpchicken
139
467ms
64 mins ago
Spelling Numbers
pardouin
🥈
231
2,681ms
64 mins ago
Fizz Buzz
scpchicken
90
364ms
72 mins ago
Fibonacci
scpchicken
61
386ms
72 mins ago
Reversi
scpchicken
🥉
67
7ms
76 mins ago
Cubes
arcpolaris
311
464ms
76 mins ago
Multitap Input
scpchicken
61
4ms
77 mins ago
Game of Life
scpchicken
🥉
76
4ms
78 mins ago
Hexdump
scpchicken
🥈
74
4ms
78 mins ago
Factorial Factorisation
scpchicken
💎
78
45ms
79 mins ago
Calendar
scpchicken
💎
147
4ms
80 mins ago
Medal Tally
scpchicken
🥉
83
9ms
80 mins ago
Musical Chords
scpchicken
83
8ms
87 mins ago
Rijndael S-box
scpchicken
💎
112
4ms
88 mins ago
Calendar
kg583
🥈
167
91ms
89 mins ago
24 Game
scpchicken
💎
171
1,460ms
90 mins ago
Catalan Numbers
scpchicken
61
56ms
91 mins ago
Topological Sort
scpchicken
73
17ms
92 mins ago
Catalan’s Constant
scpchicken
81
230ms
92 mins ago
Inventory Sequence
scpchicken
57
3ms
92 mins ago
Levenshtein Distance
scpchicken
🥉
124
48ms
92 mins ago
Foo Fizz Buzz Bar
scpchicken
62
4ms
93 mins ago
Farey Sequence
scpchicken
65
4ms
94 mins ago
Leyland Numbers
scpchicken
64
8ms
94 mins ago
Roman to Arabic
scpchicken
72
19ms
95 mins ago
Hilbert Curve
scpchicken
🥉
200
6ms
95 mins ago
φ
LostSyntax21
40
215ms
95 mins ago
N Queens
scpchicken
🥉
129
5ms
96 mins ago
Morse Encoder
scpchicken
🥉
103
4ms
96 mins ago
PalindromemordnilaP
scpchicken
69
6ms
96 mins ago
Morse Decoder
scpchicken
🥉
96
4ms
97 mins ago
Tongue-twisters
scpchicken
🥉
181
3ms
97 mins ago
QR Decoder
scpchicken
131
4ms
98 mins ago
Set
scpchicken
🥉
129
52ms
98 mins ago
Scrambled Sort
scpchicken
93
90ms
98 mins ago
γ
scpchicken
🥈
127
3,277ms
99 mins ago