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
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
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 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
Partition Numbers
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Set
Snake
Sphenic Numbers
Star Wars GPT
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
Rockstar 2
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
Rockstar 2
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
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
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 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
Partition Numbers
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Set
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
Divisors
Carltoffel
63
43 hours ago
Leap Years
Carltoffel
62
46 hours ago
Abundant Numbers
ShadowMoon501
78
2 days ago
Partition Numbers
DialFrost
95
3 days ago
Fizz Buzz
ShadowMoon501
112
3 days ago
Prime Numbers
acotis
399
4 days ago
Fizz Buzz
samuel-thesing
124
4 days ago
Foo Fizz Buzz Bar
Carltoffel
188
4 days ago
Fizz Buzz
Carltoffel
109
4 days ago
Fizz Buzz
sunberry00
169
4 days ago
Sphenic Numbers
DialFrost
81
5 days ago
ASCII Table
Verlio-H
129
5 days ago
Emirp Numbers
yhm138
1,492
6 days ago
Tutorial
targrik
277
8 days ago
Tutorial
sinigersky
116
8 days ago
ISBN
BREMAUCY
202
8 days ago
12 Days of Christmas
Shanethegamer
3,841
10 days ago
ln 2
HumanoidCPU
1,019
11 days ago
Catalan’s Constant
HumanoidCPU
1,019
11 days ago
λ
HumanoidCPU
1,019
11 days ago
𝑒
HumanoidCPU
1,019
11 days ago
φ
HumanoidCPU
1,019
11 days ago
√2
HumanoidCPU
1,019
11 days ago
γ
HumanoidCPU
1,019
11 days ago
τ
HumanoidCPU
1,019
11 days ago
π
HumanoidCPU
1,019
11 days ago
Factorial Factorisation
HumanoidCPU
878
11 days ago
Kolakoski Sequence
HumanoidCPU
2,016
11 days ago
Kolakoski Constant
HumanoidCPU
1,019
11 days ago
Quine
sciencejiho
1,177
12 days ago
Tutorial
voytxt
128
14 days ago
Tic-tac-toe
SirBogman
💎
162
19 days ago
Tic-tac-toe
stefangimmillaro
🥈
163
19 days ago
Arithmetic Numbers
stefangimmillaro
💎
84
24 days ago
Lucky Numbers
CaedenHarper
106
26 days ago
Fibonacci
CaedenHarper
62
25 Jan 2025
Tongue-twisters
CaedenHarper
641
25 Jan 2025
Ascending Primes
CaedenHarper
1,146
25 Jan 2025
Gijswijt’s Sequence
CaedenHarper
8,034
25 Jan 2025
Emirp Numbers (Long)
CaedenHarper
2,630
25 Jan 2025
Sierpiński Triangle
CaedenHarper
522
25 Jan 2025
Diamonds
CaedenHarper
1,671
25 Jan 2025
Leyland Numbers
CaedenHarper
1,562
25 Jan 2025
Niven Numbers (Long)
CaedenHarper
16,707
25 Jan 2025
Pascal’s Triangle
CaedenHarper
923
25 Jan 2025
Evil Numbers (Long)
CaedenHarper
4,990
25 Jan 2025
Pernicious Numbers (Long)
CaedenHarper
71,689
25 Jan 2025
Recamán
CaedenHarper
2,431
25 Jan 2025
Collatz
CaedenHarper
9,260
25 Jan 2025
Van Eck Sequence
CaedenHarper
8,589
25 Jan 2025
Odious Numbers (Long)
CaedenHarper
4,979
25 Jan 2025
Leap Years
CaedenHarper
1,640
25 Jan 2025
Abundant Numbers (Long)
CaedenHarper
2,474
25 Jan 2025
Niven Numbers
CaedenHarper
323
25 Jan 2025
Foo Fizz Buzz Bar
CaedenHarper
11,760
25 Jan 2025
Inventory Sequence
CaedenHarper
8,657
25 Jan 2025
Prime Numbers
CaedenHarper
255
25 Jan 2025
Evil Numbers
CaedenHarper
254
25 Jan 2025
Odious Numbers
CaedenHarper
263
25 Jan 2025
Pernicious Numbers
CaedenHarper
344
25 Jan 2025
Smith Numbers
CaedenHarper
4,114
25 Jan 2025
Divisors
CaedenHarper
146
25 Jan 2025
Arithmetic Numbers
CaedenHarper
124
25 Jan 2025
Happy Numbers
CaedenHarper
333
25 Jan 2025
12 Days of Christmas
CaedenHarper
3,081
25 Jan 2025
Emirp Numbers
CaedenHarper
386
25 Jan 2025
Happy Numbers (Long)
CaedenHarper
1,445
25 Jan 2025
Prime Numbers (Long)
CaedenHarper
13,363
25 Jan 2025
Christmas Trees
CaedenHarper
909
25 Jan 2025
Kolakoski Sequence
CaedenHarper
2,016
25 Jan 2025
Vampire Numbers
CaedenHarper
2,035
25 Jan 2025
Look and Say
CaedenHarper
1,433
25 Jan 2025
ASCII Table
CaedenHarper
415
25 Jan 2025
Polyominoes
CaedenHarper
11,208
25 Jan 2025
24 Game
CaedenHarper
20,659
25 Jan 2025