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
Dragon Curve
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
Dragon Curve
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
Bytes
Time
Submitted
QR Decoder
MeWhenI
155
17ms
52 mins ago
Farey Sequence
madex
80
11ms
71 mins ago
Tic-tac-toe
Fvirgilio
104
14ms
2 hours ago
Time Distance
Steffan153
237
12ms
4 hours ago
Hexdump
Matter1024
191
10ms
5 hours ago
Taxicab Numbers
MeWhenI
97
43ms
6 hours ago
Levenshtein Distance
ComradeSquirrel
182
19ms
7 hours ago
Dragon Curve
LostSyntax21
10,285
13ms
7 hours ago
Fizz Buzz
ComradeSquirrel
61
10ms
7 hours ago
Dragon Curve
AlephSquirrel
174
22ms
8 hours ago
Dragon Curve
HumanoidCPU
10,285
13ms
8 hours ago
Arithmetic Numbers
TudyM
80
1,471ms
9 hours ago
Dragon Curve
dokutan
1,354
11ms
9 hours ago
Star Wars GPT
zgialor-lab
198
12ms
9 hours ago
Pangram Grep
TudyM
77
18ms
10 hours ago
Scrambled Sort
TudyM
95
14ms
11 hours ago
Flags
bitsandbeyond
677
26ms
11 hours ago
Dragon Curve
Shanethegamer
10,285
15ms
12 hours ago
Dragon Curve
GolfingSuccess
215
386ms
12 hours ago
Kaprekar Numbers
Andrey2001
238
2,539ms
13 hours ago
Rock-paper-scissors-Spock-lizard
Andrey2001
294
14ms
13 hours ago
Polyominoes
Andrey2001
611
61ms
13 hours ago
24 Game
Andrey2001
369
878ms
13 hours ago
Dragon Curve
scpchicken
270
54ms
13 hours ago
Taxicab Numbers
Seek64
102
1,259ms
15 hours ago
Niven Numbers
TudyM
46
12ms
17 hours ago
Abundant Numbers
TudyM
66
11ms
17 hours ago
Abundant Numbers (Long)
TudyM
66
36ms
17 hours ago
Dragon Curve
snoozingnewt
10,285
17ms
17 hours ago
Factorial Factorisation
TudyM
121
19ms
17 hours ago
Intersection
lelbal
161
29ms
18 hours ago
λ
JayXon
🥈
165
4,112ms
23 hours ago
Catalan’s Constant
cuvam
276
28ms
23 hours ago
Niven Numbers
Matter1024
47
10ms
23 hours ago
Levenshtein Distance
sisyphus-ppcg
🥇
90
33ms
28 hours ago
Mandelbrot
cuvam
135
263ms
28 hours ago
Arabic to Roman
cuvam
177
20ms
28 hours ago
Day of Week
cuvam
105
14ms
29 hours ago
τ
Steffan153
67
11ms
29 hours ago
π
Steffan153
67
12ms
29 hours ago
Leap Years
cuvam
55
17ms
30 hours ago
Leyland Numbers
cuvam
112
18ms
31 hours ago
φ
LostSyntax21
🥇
53
58ms
31 hours ago
Arithmetic Numbers
cuvam
127
31ms
31 hours ago
Semiprime Numbers
cuvam
117
471ms
31 hours ago
Tutorial
samnak2
88
10ms
31 hours ago
Abundant Numbers (Long)
samnak2
74
40ms
31 hours ago
Abundant Numbers
samnak2
73
11ms
31 hours ago
99 Bottles of Beer
samnak2
283
10ms
31 hours ago
12 Days of Christmas
samnak2
525
10ms
31 hours ago
Arabic to Roman
samnak2
239
38ms
31 hours ago
Emirp Numbers
TudyM
74
17ms
31 hours ago
Floyd-Steinberg Dithering
hallvabo
217
37ms
32 hours ago
Day of Week
TudyM
99
15ms
32 hours ago
Fractions
TudyM
92
18ms
32 hours ago
Catalan’s Constant
CaedenHarper
102
34ms
32 hours ago
Ascending Primes
TudyM
72
1,175ms
33 hours ago
Rijndael S-box
cuvam
227
10ms
34 hours ago
Gijswijt’s Sequence
cuvam
135
703ms
34 hours ago
Inventory Sequence
cuvam
70
29ms
34 hours ago
ISBN
cuvam
134
18ms
35 hours ago
Trinomial Triangle
scpchicken
67
11ms
35 hours ago
Ascending Primes
Mikey-Beep
206
3,000ms
36 hours ago
Poker
scpchicken
283
24ms
36 hours ago
99 Bottles of Beer
Technet8394
301
11ms
36 hours ago
Ten-pin Bowling
scpchicken
172
32ms
36 hours ago
Maze
cuvam
199
15ms
36 hours ago
Billiards
scpchicken
168
18ms
37 hours ago
Lucky Numbers
CaedenHarper
56
19ms
37 hours ago
Tic-tac-toe
scpchicken
116
29ms
37 hours ago
Continued Fractions
snoozingnewt
124
10ms
38 hours ago
99 Bottles of Beer
cuvam
363
11ms
38 hours ago
Divisors
cuvam
62
11ms
39 hours ago
Spelling Numbers
zgialor-lab
416
22ms
39 hours ago
Card Number Validation
cuvam
144
17ms
39 hours ago
Game of Life
cuvam
313
19ms
39 hours ago
Divisors
TudyM
62
11ms
41 hours ago
Pernicious Numbers
TudyM
48
17ms
41 hours ago
Fizz Buzz
zgialor-lab
60
10ms
41 hours ago
Zeckendorf Representation
FortuiteMan
134
12ms
42 hours ago