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
τ
ovs-code
68
3 days ago
π
ovs-code
68
3 days ago
Gray Code Encoder
ovs-code
42
3 days ago
Gray Code Decoder
ovs-code
31
3 days ago
Kolakoski Sequence
Shanethegamer
2,001
3 days ago
Highly Composite Numbers
Shanethegamer
394
3 days ago
Trinomial Triangle
Shanethegamer
2,106
3 days ago
Mandelbrot
Shanethegamer
3,446
3 days ago
Hilbert Curve
Shanethegamer
2,114
3 days ago
Van Eck Sequence
Shanethegamer
2,557
3 days ago
Vampire Numbers
Shanethegamer
1,073
3 days ago
Smith Numbers
Shanethegamer
1,826
3 days ago
Sierpiński Triangle
Shanethegamer
426
3 days ago
Rijndael S-box
Shanethegamer
802
3 days ago
Recamán
Shanethegamer
899
3 days ago
Prime Numbers
Shanethegamer
73
3 days ago
Pernicious Numbers
Shanethegamer
102
3 days ago
Pascal’s Triangle
Shanethegamer
808
3 days ago
Partition Numbers
Shanethegamer
649
3 days ago
Odious Numbers (Long)
Shanethegamer
1,947
3 days ago
Odious Numbers
Shanethegamer
75
3 days ago
Number Spiral
Shanethegamer
322
3 days ago
Niven Numbers
Shanethegamer
93
3 days ago
N Queens
Shanethegamer
1,248
3 days ago
Look and Say
Shanethegamer
1,304
3 days ago
Leyland Numbers
Shanethegamer
919
3 days ago
Leap Years
Shanethegamer
732
3 days ago
Kaprekar Numbers
Shanethegamer
442
3 days ago
Inventory Sequence
Shanethegamer
2,625
3 days ago
Happy Numbers (Long)
Shanethegamer
554
3 days ago
Happy Numbers
Shanethegamer
109
3 days ago
Gijswijt’s Sequence
Shanethegamer
2,002
3 days ago
Fizz Buzz
Shanethegamer
444
3 days ago
Fibonacci
Shanethegamer
136
3 days ago
Evil Numbers (Long)
Shanethegamer
1,952
3 days ago
Evil Numbers
Shanethegamer
72
3 days ago
Emirp Numbers (Long)
Shanethegamer
1,158
3 days ago
Emirp Numbers
Shanethegamer
138
3 days ago
Divisors
Shanethegamer
1,365
3 days ago
Diamonds
Shanethegamer
1,283
3 days ago
Cubes
Shanethegamer
3,051
3 days ago
Collatz
Shanethegamer
3,228
3 days ago
Christmas Trees
Shanethegamer
657
3 days ago
Catalan Numbers
Shanethegamer
3,031
3 days ago
Ascending Primes
Shanethegamer
514
3 days ago
Abundant Numbers (Long)
Shanethegamer
966
3 days ago
Abundant Numbers
Shanethegamer
165
3 days ago
12 Days of Christmas
Shanethegamer
2,597
3 days ago
Medal Tally
ovs-code
65
3 days ago
Kaprekar Numbers
ovs-code
47
3 days ago
Pernicious Numbers (Long)
ovs-code
22
4 days ago
Factorial Factorisation
HumanoidCPU
865
7 days ago
Gray Code Encoder
GolfingSuccess
45
19 days ago
Poker
ovs-code
200
26 days ago
Sphenic Numbers
Shanethegamer
12,459
26 days ago
Semiprime Numbers
Shanethegamer
18,038
26 days ago
Scrambled Sort
ovs-code
43
2 May 2025
Star Wars GPT
ovs-code
72
28 Apr 2025
Tutorial
dokutan
42
28 Apr 2025
Trinomial Triangle
KatieLG
2,146
27 Apr 2025
Sphenic Numbers
KatieLG
16,059
27 Apr 2025
Semiprime Numbers
KatieLG
23,288
27 Apr 2025
Odd Polyomino Tiling
KatieLG
22,258
27 Apr 2025
Mandelbrot
KatieLG
3,525
27 Apr 2025
Hilbert Curve
KatieLG
2,175
27 Apr 2025
Highly Composite Numbers
KatieLG
635
27 Apr 2025
Hexagonal Spiral
KatieLG
1,274
27 Apr 2025
Vampire Numbers
ovs-code
44
26 Apr 2025
Niven Numbers (Long)
ovs-code
22
26 Apr 2025
Niven Numbers
ovs-code
22
26 Apr 2025
Look and Say
ovs-code
27
26 Apr 2025
Odd Polyomino Tiling
Shanethegamer
22,258
25 Apr 2025
Arabic to Roman
ovs-code
77
23 Apr 2025
Foo Fizz Buzz Bar
Shanethegamer
9,262
23 Apr 2025
Catalan Numbers
ovs-code
51
23 Apr 2025