Recent Solutions
Prev Hole
Play Hole
Next Hole
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
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
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
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
Calendar
Connect Four
Continued Fractions
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
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
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
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
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
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
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
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
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
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
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
Calendar
Connect Four
Continued Fractions
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Niven Numbers
09cf
46
9ms
2 days ago
Niven Numbers
j-zhang43
🥇
44
10ms
4 days ago
Niven Numbers
CommandLeo
46
9ms
4 days ago
Niven Numbers
Matter1024
56
10ms
5 days ago
Niven Numbers
madeforlosers
58
9ms
8 days ago
Niven Numbers
Hyperoplex145
56
10ms
9 days ago
Niven Numbers
webmiche
72
9ms
16 days ago
Niven Numbers
butnaruteodor
46
9ms
20 days ago
Niven Numbers
TJK-S
67
9ms
22 Oct 2025
Niven Numbers
Babafaba
45
9ms
22 Oct 2025
Niven Numbers
snoozingnewt
46
9ms
20 Oct 2025
Niven Numbers
iczelia
60
9ms
19 Oct 2025
Niven Numbers
ApoChagi
54
9ms
17 Oct 2025
Niven Numbers
luuumine
46
9ms
17 Oct 2025
Niven Numbers
Code-Coder-coder
57
10ms
11 Oct 2025
Niven Numbers
Yash-Sangtani
68
9ms
5 Oct 2025
Niven Numbers
KatieLG
45
10ms
3 Oct 2025
Niven Numbers
jacekwladzinski
58
11ms
3 Oct 2025
Niven Numbers
FortuiteMan
48
9ms
1 Oct 2025
Niven Numbers
ahmetdemirag
46
13ms
1 Oct 2025
Niven Numbers
lokeshllkumar
66
9ms
26 Sep 2025
Niven Numbers
therealnumbers
68
9ms
26 Sep 2025
Niven Numbers
yukii1004
65
9ms
25 Sep 2025
Niven Numbers
CornerMercury
🥇
44
12ms
24 Sep 2025
Niven Numbers
tomh1012
60
10ms
17 Sep 2025
Niven Numbers
Emutis
47
9ms
15 Sep 2025
Niven Numbers
blaztoma
46
9ms
15 Sep 2025
Niven Numbers
koweret
84
9ms
13 Sep 2025
Niven Numbers
InigoK
46
9ms
8 Sep 2025
Niven Numbers
Upload-and-View
66
9ms
26 Aug 2025
Niven Numbers
jm600
64
9ms
25 Aug 2025
Niven Numbers
wobblybits
56
9ms
23 Aug 2025
Niven Numbers
EthanJantz
68
9ms
22 Aug 2025
Niven Numbers
saturzay
68
9ms
22 Aug 2025
Niven Numbers
denisfouchard
52
9ms
21 Aug 2025
Niven Numbers
albanian-laundromat
45
10ms
19 Aug 2025
Niven Numbers
LordSir101
47
9ms
18 Aug 2025
Niven Numbers
osNiko
57
11ms
15 Aug 2025
Niven Numbers
janlelis
47
9ms
15 Aug 2025
Niven Numbers
katss2
60
12ms
14 Aug 2025
Niven Numbers
qpwoeirut
46
9ms
13 Aug 2025
Niven Numbers
GolfingSuccess
🥇
44
9ms
10 Aug 2025
Niven Numbers
Zhenyu-Bo
261
9ms
1 Aug 2025
Niven Numbers
Matthewhine8
69
11ms
29 Jul 2025
Niven Numbers
YAJUE114514
56
11ms
29 Jul 2025
Niven Numbers
kg583
🥇
44
9ms
26 Jul 2025
Niven Numbers
edsrzf
45
9ms
26 Jul 2025
Niven Numbers
Mikey-Beep
55
9ms
25 Jul 2025
Niven Numbers
wuduculfre
45
9ms
22 Jul 2025
Niven Numbers
dirckvdende
46
9ms
20 Jul 2025
Niven Numbers
RaBa21
47
9ms
18 Jul 2025
Niven Numbers
clayboll99
71
9ms
9 Jul 2025
Niven Numbers
FEZfan
50
9ms
9 Jul 2025
Niven Numbers
Naitzirch
67
9ms
3 Jul 2025
Niven Numbers
zacjl
47
9ms
3 Jul 2025
Niven Numbers
4atj
🥇
44
9ms
2 Jul 2025
Niven Numbers
KasperKivimaeki
45
9ms
30 Jun 2025
Niven Numbers
PotatoSaladOverlord
74
9ms
20 Jun 2025
Niven Numbers
klixel
56
12ms
19 Jun 2025
Niven Numbers
cthierfelder
59
9ms
19 Jun 2025
Niven Numbers
Flekay
58
9ms
19 Jun 2025
Niven Numbers
Mathrew2012
53
9ms
13 Jun 2025
Niven Numbers
theonetruenerd
64
9ms
9 Jun 2025
Niven Numbers
qwertyuiop3
50
9ms
4 Jun 2025
Niven Numbers
kistlerf
65
16ms
30 May 2025
Niven Numbers
ToE42
69
9ms
28 May 2025
Niven Numbers
ffelixm
56
9ms
28 May 2025
Niven Numbers
Lv0Sys
55
9ms
27 May 2025
Niven Numbers
codewrite
56
9ms
25 May 2025
Niven Numbers
KAKISKA-code
96
9ms
24 May 2025
Niven Numbers
Artemis21
46
9ms
23 May 2025
Niven Numbers
nooberitess
55
9ms
22 May 2025
Niven Numbers
mossiegoat
61
9ms
22 May 2025
Niven Numbers
TheZwierzLF
63
9ms
19 May 2025
Niven Numbers
EnisEfe0
61
9ms
18 May 2025