Recent Solutions
Prev Hole
Play Hole
Next Hole
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
Continued Fractions
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Continued Fractions
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Emirp Numbers
albanian-laundromat
🥉
103
273ms
4 days ago
Emirp Numbers
Lv0Sys
169
287ms
28 Nov 2025
Emirp Numbers
CaedenHarper
🥉
103
296ms
24 Nov 2025
Emirp Numbers
KasperKivimaeki
115
288ms
9 Oct 2025
Emirp Numbers
snoozingnewt
276
292ms
28 Sep 2025
Emirp Numbers
fuzzylojik-golf
🥉
103
301ms
30 Aug 2025
Emirp Numbers
ereztaiar
211
302ms
12 May 2025
Emirp Numbers
yhm138
1,295
299ms
16 Feb 2025
Emirp Numbers
emgordon154
123
299ms
17 Jan 2025
Emirp Numbers
DialFrost
119
310ms
26 Dec 2024
Emirp Numbers
edsrzf
🥉
103
291ms
1 Nov 2024
Emirp Numbers
pardouin
118
313ms
22 Oct 2024
Emirp Numbers
Mabeloid
223
287ms
17 Sep 2024
Emirp Numbers
Shanethegamer
183
279ms
29 Aug 2024
Emirp Numbers
HumanoidCPU
183
272ms
26 Aug 2024
Emirp Numbers
dokutan
140
309ms
1 Apr 2024
Emirp Numbers
xbxbxb007
251
342ms
10 Jan 2024
Emirp Numbers
kkoenig
106
302ms
5 Jan 2024
Emirp Numbers
hotmanga
253
297ms
28 Oct 2023
Emirp Numbers
Yewzir
🥉
103
297ms
26 Oct 2023
Emirp Numbers
msbranicky
106
294ms
8 Sep 2023
Emirp Numbers
sean-niemann
🥉
103
285ms
30 Aug 2023
Emirp Numbers
stefangimmillaro
🥉
103
274ms
22 Aug 2023
Emirp Numbers
eli-siegel
341
276ms
23 Jun 2023
Emirp Numbers
kimbo
183
283ms
29 Dec 2022
Emirp Numbers
retrohun
223
284ms
27 Dec 2022
Emirp Numbers
Steffan153
🥉
103
291ms
17 Dec 2022
Emirp Numbers
Lydxn
🥉
103
282ms
13 Jul 2022
Emirp Numbers
KatieLG-Transpiler
185
293ms
24 Jun 2022
Emirp Numbers
SpareManiKatti
226
295ms
19 Apr 2022
Emirp Numbers
KatieLG
183
282ms
9 Apr 2022
Emirp Numbers
j-Ewan
199
277ms
22 Mar 2022
Emirp Numbers
mokymok
218
290ms
8 Nov 2021
Emirp Numbers
MeWhenI
🥉
103
289ms
4 Nov 2021
Emirp Numbers
janbehrens
157
271ms
4 Sep 2021
Emirp Numbers
emplv
105
291ms
31 Aug 2021
Emirp Numbers
kurkale6ka
186
269ms
15 Jul 2021
Emirp Numbers
masterada
🥇
101
289ms
26 Mar 2021
Emirp Numbers
doge1338
113
285ms
14 Dec 2020
Emirp Numbers
JayXon
🥉
103
295ms
1 Nov 2020
Emirp Numbers
JRaspass
183
285ms
15 Jul 2020
Emirp Numbers
nwellnhof
🥇
101
285ms
28 Apr 2020
Emirp Numbers
MahlerFive
178
293ms
23 Apr 2020
Emirp Numbers
b97tsk
204
283ms
22 Apr 2020
Emirp Numbers
yzzyx
199
296ms
21 Apr 2020
Emirp Numbers
bendiscz
183
288ms
20 Apr 2020
Emirp Numbers
lukechampine
218
300ms
20 Apr 2020
Emirp Numbers
mazzegi
302
280ms
19 Apr 2020
Emirp Numbers
ThomasDotCodes
219
282ms
16 Apr 2020
Emirp Numbers
primo-ppcg
🥉
103
295ms
16 Apr 2020
Emirp Numbers
jerrandolph
224
282ms
16 Apr 2020