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
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
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
Numbrix
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
ArkScript
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
ArkScript
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
Calendar
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
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
Numbrix
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
Tutorial
Mefred
146
5ms
13 hours ago
Gray Code Decoder
kg583
56
8ms
31 hours ago
Gray Code Decoder
GolfingSuccess
56
8ms
31 hours ago
Morse Encoder
edsrzf
💎
167
4ms
3 days ago
Gray Code Encoder
kg583
110
13ms
3 days ago
Morse Encoder
kg583
🥈
168
4ms
3 days ago
ASCII Table
kg583
120
4ms
4 days ago
Rock-paper-scissors-Spock-lizard
HumanoidCPU
879
4ms
5 days ago
Trinomial Triangle
KatieLG-Transpiler
2,075
4ms
7 days ago
Tower of Hanoi
KatieLG-Transpiler
3,585
3ms
7 days ago
Taxicab Numbers
KatieLG-Transpiler
4,168
3ms
7 days ago
Sphenic Numbers
KatieLG-Transpiler
8,868
3ms
7 days ago
Semiprime Numbers
KatieLG-Transpiler
12,797
4ms
7 days ago
Polygon Triangulations
KatieLG-Transpiler
4,320
4ms
7 days ago
Partition Numbers
KatieLG-Transpiler
655
4ms
7 days ago
Odd Polyomino Tiling
KatieLG-Transpiler
21,439
4ms
7 days ago
Mandelbrot
KatieLG-Transpiler
10,012
4ms
7 days ago
Kaprekar Numbers
KatieLG-Transpiler
448
4ms
7 days ago
Hilbert Curve
KatieLG-Transpiler
5,126
3ms
7 days ago
Highly Composite Numbers
KatieLG-Transpiler
400
4ms
7 days ago
Hexagonal Spiral
KatieLG-Transpiler
1,143
4ms
7 days ago
Apéry’s Constant
KatieLG-Transpiler
1,011
4ms
7 days ago
Catalan’s Constant
JOrE20
1,011
4ms
9 days ago
τ
JOrE20
1,012
4ms
11 days ago
√2
JOrE20
1,012
3ms
11 days ago
φ
JOrE20
1,012
4ms
11 days ago
π
JOrE20
1,012
4ms
11 days ago
ln 2
JOrE20
1,012
4ms
11 days ago
Calendar
edsrzf
💎
239
5ms
13 days ago
Fibonacci
GolfingSuccess
🥈
45
4ms
15 days ago
Fibonacci
plcc0
58
4ms
17 days ago
Smith Numbers
kg583
132
1,484ms
18 days ago
Smooth Numbers
GolfingSuccess
110
35ms
19 days ago
Scrambled Sort
kg583
🥉
123
16ms
19 days ago
Levenshtein Distance
kg583
🥈
142
1,342ms
19 days ago
Zeckendorf Representation
kg583
🥈
124
4ms
20 days ago
Factorial Factorisation
kg583
🥇
127
11ms
20 days ago
Factorial Factorisation
edsrzf
🥇
127
11ms
20 days ago
Smith Numbers
edsrzf
🥈
118
641ms
20 days ago
Kaprekar Numbers
emgordon154
🥈
104
4,808ms
20 days ago
Kaprekar Numbers
edsrzf
💎
101
2,828ms
20 days ago
Jacobi Symbol
kg583
🥈
153
5ms
24 days ago
Time Distance
edsrzf
🥉
284
5ms
25 days ago
Time Distance
kg583
💎
254
7ms
25 days ago
Calendar
kg583
🥈
251
8ms
25 days ago
Game of Life
kg583
🥉
124
6ms
27 days ago
PalindromemordnilaP
edsrzf
💎
91
4ms
27 days ago
Levenshtein Distance
edsrzf
💎
139
463ms
27 days ago
Zodiac Signs
kg583
🥉
173
7ms
27 days ago
PalindromemordnilaP
kg583
🥈
102
5ms
27 days ago
Lucky Numbers
kg583
🥉
79
29ms
17 Dec 2025
γ
JOrE20
1,011
4ms
17 Dec 2025
Forsyth–Edwards Notation
kg583
164
4ms
16 Dec 2025
QR Decoder
edsrzf
🥉
210
4ms
16 Dec 2025
Van Eck Sequence
kg583
💎
57
14ms
16 Dec 2025
QR Decoder
kg583
🥈
204
4ms
16 Dec 2025
Intersection
kg583
127
5ms
15 Dec 2025
Leap Years
edsrzf
🥉
52
4ms
14 Dec 2025
Seven Segment
edsrzf
🥉
125
4ms
11 Dec 2025
Leap Years
kg583
🥉
52
4ms
10 Dec 2025
Maze
edsrzf
💎
117
10ms
10 Dec 2025
Pernicious Numbers
snoozingnewt
53
4ms
10 Dec 2025
United States
edsrzf
🥈
175
4ms
9 Dec 2025
Diamonds
edsrzf
114
8ms
4 Dec 2025
Tongue-twisters
prestosilver
544
4ms
3 Dec 2025
Tower of Hanoi
dokutan
75
4ms
2 Dec 2025
Tower of Hanoi
CaedenHarper
3,584
4ms
1 Dec 2025
Spelling Numbers
dokutan
13,953
241ms
1 Dec 2025
Lucky Tickets
dokutan
3,284
5ms
1 Dec 2025
Emirp Numbers
edsrzf
🥈
73
5ms
30 Nov 2025
Tower of Hanoi
KatieLG
3,585
4ms
30 Nov 2025
ROT13
edsrzf
💎
83
33ms
30 Nov 2025
ISBN
kg583
102
4ms
30 Nov 2025
Ordinal Numbers
kg583
94
5ms
29 Nov 2025
ROT13
kg583
🥈
89
7ms
29 Nov 2025
Billiards
kg583
🥉
151
6ms
29 Nov 2025
Hilbert Curve
kg583
💎
342
45ms
29 Nov 2025
Intersection
edsrzf
🥇
105
5ms
29 Nov 2025
United States
kg583
💎
163
5ms
27 Nov 2025
Taxicab Numbers
HumanoidCPU
4,652
4ms
27 Nov 2025