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
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
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
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
ArkScript
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
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
ArkScript
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
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
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Prime Numbers (Long)
retrohun
56
195ms
1 Jan 2026
Prime Numbers (Long)
KasperKivimaeki
49
646ms
17 Dec 2025
Prime Numbers (Long)
KatieLG
4,405
4ms
30 Nov 2025
Prime Numbers (Long)
blaztoma
51
204ms
10 Nov 2025
Prime Numbers (Long)
Jay2k1
84
62ms
6 Nov 2025
Prime Numbers (Long)
snoozingnewt
51
193ms
9 Oct 2025
Prime Numbers (Long)
xsot
47
551ms
29 Mar 2025
Prime Numbers (Long)
kevinnaviapaiva
155
48ms
6 Mar 2025
Prime Numbers (Long)
CaedenHarper
51
197ms
26 Jan 2025
Prime Numbers (Long)
Lydxn
🥉
46
301ms
22 Jan 2025
Prime Numbers (Long)
nnchutchikov
57
355ms
12 Dec 2024
Prime Numbers (Long)
targrik
47
585ms
5 Dec 2024
Prime Numbers (Long)
eclyptox
78
55ms
10 Oct 2024
Prime Numbers (Long)
Mabeloid
5,953
5ms
4 Oct 2024
Prime Numbers (Long)
ovs-code
50
202ms
28 Aug 2024
Prime Numbers (Long)
Kokusui
69
395ms
26 Jul 2024
Prime Numbers (Long)
Florian-Mt
76
643ms
9 Jul 2024
Prime Numbers (Long)
rollershutter
51
195ms
27 Jun 2024
Prime Numbers (Long)
dokutan
68
381ms
15 Jun 2024
Prime Numbers (Long)
HumanoidCPU
5,953
4ms
19 May 2024
Prime Numbers (Long)
sultan
64
39ms
2 Apr 2024
Prime Numbers (Long)
Yewzir
55
187ms
5 Nov 2023
Prime Numbers (Long)
stefangimmillaro
54
192ms
18 Sep 2023
Prime Numbers (Long)
msbranicky
84
358ms
8 Sep 2023
Prime Numbers (Long)
primo-ppcg
🥇
45
615ms
3 Jul 2023
Prime Numbers (Long)
YPuest
79
476ms
22 Feb 2023
Prime Numbers (Long)
StronkCheese
89
49ms
21 Feb 2023
Prime Numbers (Long)
DialFrost
50
376ms
10 Feb 2023
Prime Numbers (Long)
Betuaredead
67
692ms
4 Jan 2023
Prime Numbers (Long)
astdefu
71
689ms
13 Dec 2022
Prime Numbers (Long)
satutalo
65
82ms
29 Nov 2022
Prime Numbers (Long)
MeWhenI
50
202ms
6 Nov 2022
Prime Numbers (Long)
Re-Adventures
62
393ms
4 Nov 2022
Prime Numbers (Long)
aksyristos
50
196ms
25 Oct 2022
Prime Numbers (Long)
pschmid0
63
395ms
22 Oct 2022
Prime Numbers (Long)
MaxElf999
91
364ms
28 Sep 2022
Prime Numbers (Long)
stefangabos
60
196ms
23 Sep 2022
Prime Numbers (Long)
sebipopa
60
188ms
23 Sep 2022
Prime Numbers (Long)
seanplowman
91
350ms
18 Jul 2022
Prime Numbers (Long)
fuerst-ede
86
20ms
8 Jul 2022
Prime Numbers (Long)
KatieLG-Transpiler
7,181
5ms
24 Jun 2022
Prime Numbers (Long)
Shanethegamer
54
188ms
21 Apr 2022
Prime Numbers (Long)
sean-niemann
50
193ms
4 Mar 2022
Prime Numbers (Long)
gnlow
5,953
4ms
27 Jan 2022
Prime Numbers (Long)
jessegyger
93
355ms
12 Jan 2022
Prime Numbers (Long)
rucin93
50
192ms
9 Dec 2021
Prime Numbers (Long)
KrausRaus
57
196ms
7 Dec 2021
Prime Numbers (Long)
janbehrens
54
195ms
6 Dec 2021
Prime Numbers (Long)
emplv
50
194ms
6 Dec 2021
Prime Numbers (Long)
sisyphus-ppcg
🥇
45
652ms
5 Dec 2021
Prime Numbers (Long)
GrayJoKing
49
561ms
5 Dec 2021
Prime Numbers (Long)
JRaspass
5,953
5ms
5 Dec 2021