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
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
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
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
Hilbert Curve
Mandelbrot
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
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
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
Hilbert Curve
Mandelbrot
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
PalindromemordnilaP
acollett89
219
a min ago
Card Number Validation
daveberlin
127
27 mins ago
Ordinal Numbers
acollett89
112
36 mins ago
τ
helbling
68
49 mins ago
π
helbling
68
66 mins ago
12 Days of Christmas
Andrey-Plotnikov
467
4 hours ago
Musical Chords
acollett89
473
4 hours ago
ASCII Table
non-bin
168
7 hours ago
99 Bottles of Beer
non-bin
188
8 hours ago
24 Game
non-bin
3,193
8 hours ago
12 Days of Christmas
non-bin
324
8 hours ago
Mandelbrot
sean-niemann
111
9 hours ago
τ
Protothor
79
11 hours ago
Hexagonal Spiral
HumanoidCPU
1,341
12 hours ago
CSS Colors
Protothor
2,154
13 hours ago
τ
XenThe
97
16 hours ago
π
XenThe
94
17 hours ago
Tongue-twisters
XenThe
411
17 hours ago
Tutorial
DABANANAMAN120
89
17 hours ago
Scrambled Sort
bknower
122
18 hours ago
99 Bottles of Beer
LucasMartinsUthi
228
20 hours ago
Arithmetic Numbers
tetrogem
70
21 hours ago
Scrambled Sort
Salutations45
133
22 hours ago
Rijndael S-box
Andrey-Plotnikov
264
24 hours ago
Scrambled Sort
LukeBridges
138
25 hours ago
Morse Encoder
acollett89
427
26 hours ago
Morse Decoder
acollett89
450
26 hours ago
Medal Tally
acollett89
290
28 hours ago
ISBN
lukegustafson
75
30 hours ago
Pernicious Numbers
Andrey-Plotnikov
67
31 hours ago
Levenshtein Distance
acollett89
227
31 hours ago
Number Spiral
non-bin
153
31 hours ago
Prime Numbers (Long)
non-bin
89
31 hours ago
Prime Numbers
non-bin
73
31 hours ago
United States
non-bin
260
32 hours ago
Quine
Andrey-Plotnikov
28
32 hours ago
Pernicious Numbers
CaedenHarper
36
35 hours ago
99 Bottles of Beer
weliveinhell
270
35 hours ago
Divisors
CaedenHarper
57
35 hours ago
Prime Numbers
CaedenHarper
40
35 hours ago
ROT13
weliveinhell
132
35 hours ago
ASCII Table
tetrogem
156
36 hours ago
Reverse Polish Notation
Andrey-Plotnikov
93
41 hours ago
Look and Say
weliveinhell
68
41 hours ago
π
kellengreen
83
42 hours ago
π
Andrey-Plotnikov
90
43 hours ago
Fractions
gigaprofisi
104
44 hours ago
Set
sean-niemann
🥉
104
44 hours ago
Collatz
CaedenHarper
66
46 hours ago
Catalan Numbers
CaedenHarper
43
46 hours ago
Arithmetic Numbers
CaedenHarper
68
46 hours ago
Niven Numbers
BREMAUCY
52
47 hours ago
Niven Numbers (Long)
BREMAUCY
52
47 hours ago
Abundant Numbers (Long)
CaedenHarper
60
47 hours ago
Abundant Numbers
CaedenHarper
59
47 hours ago
Partition Numbers
CaedenHarper
61
47 hours ago
ISBN
acollett89
110
2 days ago
12 Days of Christmas
devninjahero
2,399
2 days ago
Tutorial
devninjahero
157
2 days ago
Arrows
acollett89
145
2 days ago
Emojify
acollett89
213
2 days ago
Levenshtein Distance
gigaprofisi
203
2 days ago
Foo Fizz Buzz Bar
BREMAUCY
90
2 days ago
Medal Tally
gigaprofisi
212
2 days ago
Day of Week
acollett89
100
2 days ago
Fibonacci
123mjb
59
2 days ago
CSS Colors
acollett89
2,522
2 days ago
Emojify
non-bin
203
2 days ago
Foo Fizz Buzz Bar
non-bin
103
2 days ago
Day of Week
non-bin
99
2 days ago
Divisors
heqianle
67
2 days ago
Fibonacci
Florian-Pubert
47
2 days ago
Fizz Buzz
Florian-Pubert
58
2 days ago
Fibonacci
Charlie85270
49
2 days ago
Foo Fizz Buzz Bar
Charlie85270
90
2 days ago