Recent Solutions
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
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
Morse Decoder
Morse Encoder
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
Morse Decoder
Morse Encoder
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
π
snoozingnewt
92
43 mins ago
Hilbert Curve
ryyyn
277
114 mins ago
Tutorial
republic82
65
3 hours ago
Niven Numbers
koweret
84
6 hours ago
Niven Numbers (Long)
koweret
86
6 hours ago
Topological Sort
snoozingnewt
401
6 hours ago
Sudoku
dokutan
427
7 hours ago
Star Wars Opening Crawl
dokutan
219
7 hours ago
Prime Numbers
0dyse
61
8 hours ago
Hilbert Curve
SirBogman
💎
127
8 hours ago
Jacobi Symbol
0dyse
200
8 hours ago
Arithmetic Numbers
Alex-Huggett
94
8 hours ago
Van Eck Sequence
Alex-Huggett
84
8 hours ago
United States
Emutis
244
9 hours ago
Arabic to Roman
vhoulbreque
177
9 hours ago
Set
edsrzf
125
18 hours ago
Kaprekar Numbers
InigoK
173
19 hours ago
Trinomial Triangle
fuzzylojik-golf
69
26 hours ago
Leap Years
EthanJantz
81
28 hours ago
ISBN
cthierfelder
131
29 hours ago
Scrambled Sort
benmuth
101
29 hours ago
Pangram Grep
EthanJantz
88
30 hours ago
Arrows
snoozingnewt
121
30 hours ago
Pangram Grep
benmuth
80
30 hours ago
Gijswijt’s Sequence
davitf
127
32 hours ago
Fractions
EthanJantz
159
33 hours ago
Sphenic Numbers
CaedenHarper
81
33 hours ago
Kaprekar Numbers
cthierfelder
226
33 hours ago
Leyland Numbers
0dyse
105
34 hours ago
Look and Say
0dyse
150
35 hours ago
Pernicious Numbers
0dyse
98
35 hours ago
Divisors
0dyse
63
35 hours ago
Evil Numbers
0dyse
52
35 hours ago
Prime Numbers (Long)
0dyse
63
35 hours ago
Forsyth–Edwards Notation
snoozingnewt
103
35 hours ago
Zeckendorf Representation
snoozingnewt
168
36 hours ago
Niven Numbers
Babafaba
47
40 hours ago
Hilbert Curve
SB-945
271
41 hours ago
Prime Numbers
Babafaba
43
42 hours ago
Billiards
SB-945
163
42 hours ago
Kolakoski Sequence
Emutis
77
42 hours ago
Rijndael S-box
SB-945
145
42 hours ago
Fibonacci
timhaj
🥇
36
43 hours ago
Rijndael S-box
qpwoeirut
251
43 hours ago
Abundant Numbers
arjunarya1
106
44 hours ago
Evil Numbers
arjunarya1
68
45 hours ago
Emirp Numbers (Long)
arjunarya1
141
45 hours ago
Odious Numbers
arjunarya1
64
45 hours ago
Pernicious Numbers (Long)
arjunarya1
103
45 hours ago
Emirp Numbers (Long)
qpwoeirut
116
47 hours ago
Emirp Numbers
qpwoeirut
115
47 hours ago
PalindromemordnilaP
arjunarya1
120
2 days ago
Happy Numbers (Long)
arjunarya1
149
2 days ago
Pernicious Numbers
arjunarya1
98
2 days ago
CSS Grid
ovs-code
186
2 days ago
Happy Numbers
mathb0y512
94
2 days ago
Time Distance
CaedenHarper
276
2 days ago
Pascal’s Triangle
arjunarya1
98
2 days ago
Niven Numbers (Long)
arjunarya1
58
2 days ago
Arithmetic Numbers
arjunarya1
84
2 days ago
Fibonacci
arjunarya1
45
2 days ago
CSS Grid
albanian-laundromat
257
2 days ago
Medal Tally
blaztoma
246
2 days ago
Rijndael S-box
1024An
780
2 days ago
Reversi
snoozingnewt
180
2 days ago
Musical Chords
snoozingnewt
217
2 days ago
12 Days of Christmas
argentite
490
2 days ago
Tutorial
argentite
86
2 days ago
π
NeuralG
1,011
2 days ago
Leap Years
NeuralG
56
2 days ago
Fibonacci
qpwoeirut
🥇
36
2 days ago
Van Eck Sequence
blaztoma
60
2 days ago
Vampire Numbers
blaztoma
173
2 days ago
Transpose Sentence
blaztoma
114
2 days ago
Sudoku (Fill-in)
bzijlema
329
2 days ago