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
Gray Code Decoder
Gray Code Encoder
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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic 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
Gray Code Decoder
Gray Code Encoder
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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Niven Numbers
madeforlosers
37
113ms
17 days ago
Niven Numbers
JOrE20
34
110ms
4 Feb 2026
Niven Numbers
Natanaelel
🥇
24
118ms
22 Jan 2026
Niven Numbers
snoozingnewt
32
106ms
1 Oct 2025
Niven Numbers
fuzzylojik-golf
26
123ms
21 Aug 2025
Niven Numbers
CaedenHarper
96
99ms
16 Aug 2025
Niven Numbers
qwertyuiop3
33
117ms
8 Jun 2025
Niven Numbers
sean-niemann
🥇
24
112ms
5 Apr 2025
Niven Numbers
alphafalfa
32
117ms
9 Dec 2024
Niven Numbers
dokutan
42
115ms
14 Oct 2024
Niven Numbers
Mabeloid
96
117ms
22 Sep 2024
Niven Numbers
pardouin
🥇
24
133ms
22 Aug 2024
Niven Numbers
KatieLG
96
102ms
2 Jun 2024
Niven Numbers
HumanoidCPU
96
99ms
8 May 2024
Niven Numbers
Yewzir
25
123ms
12 Mar 2024
Niven Numbers
ovs-code
🥇
24
125ms
29 Dec 2023
Niven Numbers
msbranicky
54
117ms
10 Sep 2023
Niven Numbers
SirFireball3521
🥇
24
126ms
8 Mar 2023
Niven Numbers
4hg
25
140ms
9 Feb 2023
Niven Numbers
DialFrost
🥇
24
122ms
6 Feb 2023
Niven Numbers
MeWhenI
🥇
24
121ms
31 Jan 2023
Niven Numbers
sisyphus-ppcg
25
107ms
16 Dec 2022
Niven Numbers
trist224
37
122ms
14 Dec 2022
Niven Numbers
Steffan153
🥇
24
121ms
17 Nov 2022
Niven Numbers
KatieLG-Transpiler
96
103ms
24 Jun 2022
Niven Numbers
krcs
32
117ms
30 Apr 2022
Niven Numbers
scpchicken
25
107ms
8 Mar 2022
Niven Numbers
inventshah
38
121ms
27 Nov 2021
Niven Numbers
mokymok
128
121ms
9 Nov 2021
Niven Numbers
Lydxn
🥇
24
124ms
26 Sep 2021
Niven Numbers
kurkale6ka
34
120ms
12 Jul 2021
Niven Numbers
Shanethegamer
26
115ms
16 Apr 2021
Niven Numbers
lynn
26
121ms
13 Apr 2021
Niven Numbers
094-gengar
36
120ms
29 Mar 2021
Niven Numbers
Indivicivet
25
113ms
24 Mar 2021
Niven Numbers
o0lit3
25
121ms
11 Feb 2021
Niven Numbers
RustemB
30
109ms
3 Jan 2021
Niven Numbers
itiievskyi
29
112ms
21 Aug 2020
Niven Numbers
jjatria
28
110ms
11 Jul 2020
Niven Numbers
Attero
26
115ms
18 Apr 2020
Niven Numbers
prplz
🥇
24
130ms
7 Mar 2020
Niven Numbers
yzhs
35
111ms
7 Mar 2020
Niven Numbers
SirBogman
🥇
24
124ms
8 Feb 2020
Niven Numbers
nwellnhof
🥇
24
117ms
25 Jan 2020
Niven Numbers
retrohun
🥇
24
121ms
27 Apr 2019
Niven Numbers
elisherer
28
115ms
19 Apr 2019
Niven Numbers
metakuna
🥇
24
120ms
16 Apr 2019
Niven Numbers
massung
39
120ms
26 Mar 2019
Niven Numbers
ConorOBrien-Foxx
37
140ms
2 Mar 2019
Niven Numbers
HPWiz
🥇
24
131ms
20 Dec 2018
Niven Numbers
GrayJoKing
🥇
24
133ms
2 Dec 2018
Niven Numbers
xohmz
27
114ms
5 Nov 2018
Niven Numbers
AlexDaniel
🥇
24
126ms
11 Oct 2018
Niven Numbers
evb0110
26
121ms
26 Sep 2018
Niven Numbers
primo-ppcg
🥇
24
124ms
28 Jul 2018
Niven Numbers
hughsimpson
27
118ms
18 Jul 2018
Niven Numbers
yokasuretsu
26
119ms
22 Jun 2018
Niven Numbers
dan-simon
26
121ms
22 Jun 2018
Niven Numbers
phdphil
28
114ms
29 May 2018
Niven Numbers
labster
28
115ms
28 May 2018
Niven Numbers
mcreenan
26
114ms
8 May 2018
Niven Numbers
thospel
25
108ms
3 May 2018
Niven Numbers
JRaspass
28
108ms
3 May 2018