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
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
Minesweeper
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
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
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
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
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
Minesweeper
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
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
Apéry’s Constant
Binary Lambda Calculus
Calendar
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Pangram Grep
ndren
145
6ms
33 hours ago
Tongue-twisters
prestosilver
535
4ms
5 days ago
PalindromemordnilaP
GolfingSuccess
62
12ms
6 days ago
Tower of Hanoi
CaedenHarper
3,578
6ms
7 days ago
Intersection
ovs-code
93
11ms
7 days ago
Emirp Numbers
snoozingnewt
74
4ms
8 days ago
Evil Numbers
snoozingnewt
39
4ms
8 days ago
Happy Numbers
snoozingnewt
🥇
54
4ms
8 days ago
Odious Numbers
snoozingnewt
38
4ms
8 days ago
Factorial Factorisation
JOrE20
769
6ms
8 days ago
Sierpiński Triangle
JOrE20
219
6ms
8 days ago
𝑒
KatieLG
1,003
5ms
8 days ago
√2
KatieLG
998
5ms
8 days ago
φ
KatieLG
991
5ms
8 days ago
τ
KatieLG
998
4ms
8 days ago
π
KatieLG
998
5ms
8 days ago
λ
KatieLG
994
4ms
8 days ago
γ
KatieLG
997
5ms
8 days ago
Van Eck Sequence
KatieLG
1,610
30ms
8 days ago
Vampire Numbers
KatieLG
1,006
7ms
8 days ago
Trinomial Triangle
KatieLG
🥉
1,772
11ms
8 days ago
Tongue-twisters
KatieLG
467
4ms
8 days ago
Smith Numbers
KatieLG
1,600
14ms
8 days ago
Sierpiński Triangle
KatieLG
199
5ms
8 days ago
Rule 110
KatieLG
1,925
125ms
8 days ago
Recamán
KatieLG
769
8ms
8 days ago
Prime Numbers (Long)
KatieLG
4,115
102ms
8 days ago
Polyominoes
KatieLG
1,267
41ms
8 days ago
Pernicious Numbers (Long)
KatieLG
14,082
729ms
8 days ago
Pascal’s Triangle
KatieLG
670
5ms
8 days ago
Partition Numbers
KatieLG
🥉
646
5ms
8 days ago
Odious Numbers (Long)
KatieLG
1,612
16ms
8 days ago
Niven Numbers (Long)
KatieLG
5,349
138ms
8 days ago
N Queens
KatieLG
1,128
8ms
8 days ago
Mandelbrot
KatieLG
🥈
537
22ms
8 days ago
Lucky Numbers
KatieLG
3,531
62ms
8 days ago
Look and Say
KatieLG
655
8ms
8 days ago
ln 2
KatieLG
1,003
5ms
8 days ago
Leyland Numbers
KatieLG
885
7ms
8 days ago
Leap Years
KatieLG
564
7ms
8 days ago
Kolakoski Sequence
KatieLG
303
14ms
8 days ago
Kolakoski Constant
KatieLG
998
5ms
8 days ago
Inventory Sequence
KatieLG
1,629
39ms
8 days ago
Hilbert Curve
KatieLG
🥈
823
27ms
8 days ago
Happy Numbers (Long)
KatieLG
548
7ms
8 days ago
Gijswijt’s Sequence
KatieLG
209
11ms
8 days ago
Foo Fizz Buzz Bar
KatieLG
1,431
59ms
8 days ago
Fizz Buzz
KatieLG
256
5ms
8 days ago
Farey Sequence
KatieLG
2,708
70ms
8 days ago
Factorial Factorisation
KatieLG
770
5ms
8 days ago
Evil Numbers (Long)
KatieLG
1,616
17ms
8 days ago
Emirp Numbers (Long)
KatieLG
973
12ms
8 days ago
Divisors
KatieLG
804
7ms
8 days ago
Cubes
KatieLG
778
20ms
8 days ago
Collatz
KatieLG
2,083
49ms
8 days ago
Christmas Trees
KatieLG
278
6ms
8 days ago
Catalan’s Constant
KatieLG
989
7ms
8 days ago
Catalan Numbers
KatieLG
2,510
24ms
8 days ago
Ascending Primes
KatieLG
425
6ms
8 days ago
Arithmetic Numbers
KatieLG
24,963
2,563ms
8 days ago
Abundant Numbers (Long)
KatieLG
811
9ms
8 days ago
99 Bottles of Beer
KatieLG
1,230
55ms
8 days ago
24 Game
KatieLG
4,963
303ms
8 days ago
12 Days of Christmas
KatieLG
2,042
12ms
8 days ago
Tower of Hanoi
KatieLG
3,578
4ms
8 days ago
Tower of Hanoi
ovs-code
🥈
77
6ms
9 days ago
λ
JOrE20
994
5ms
10 days ago
Tower of Hanoi
dokutan
3,578
4ms
10 days ago
Taxicab Numbers
HumanoidCPU
4,161
4ms
12 days ago
Taxicab Numbers
Shanethegamer
4,159
5ms
12 days ago
Mandelbrot
JOrE20
🥉
560
27ms
13 days ago
Hilbert Curve
JOrE20
🥉
840
45ms
14 days ago
Tower of Hanoi
MeWhenI
🥉
100
6ms
14 days ago
Tower of Hanoi
emgordon154
💎
67
5ms
15 days ago
Tutorial
KasperKivimaeki
35
5ms
20 days ago