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
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
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
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 Colors (Inverse)
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
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
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
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
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
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
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 Colors (Inverse)
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
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
Tutorial
DABANANAMAN120
88
5 hours ago
Tutorial
kit971103
67
25 hours ago
Tutorial
zijinoier
65
39 hours ago
Tutorial
SachitoGH
74
2 days ago
Tutorial
SirObby
106
2 days ago
Tutorial
VeryHolyCheeeese
106
2 days ago
Tutorial
Jagger002
106
3 days ago
Tutorial
bknower
69
4 days ago
Tutorial
elana-teal
61
6 days ago
Tutorial
alexanderkuesel
100
6 days ago
Tutorial
alemelis
58
6 days ago
Tutorial
jiji7879
65
6 days ago
Tutorial
shininglegend
67
7 days ago
Tutorial
DoubleUynn
69
7 days ago
Tutorial
henryjgt
67
9 days ago
Tutorial
gautambp
74
9 days ago
Tutorial
RexRowan
98
9 days ago
Tutorial
paiv
72
10 days ago
Tutorial
stphn-mt
152
11 days ago
Tutorial
smilesformiles3
66
12 days ago
Tutorial
cros107
65
12 days ago
Tutorial
Jigglypuffed
71
17 days ago
Tutorial
Rogacz
67
17 days ago
Tutorial
NOS4A5I
67
17 days ago
Tutorial
SoliGhost
58
18 days ago
Tutorial
codingisgreatbutiamnot
65
19 days ago
Tutorial
heisenbirb
82
20 days ago
Tutorial
MrRumples
94
20 days ago
Tutorial
fuzzylojik-golf
65
21 days ago
Tutorial
UnicornOnAzur
82
23 days ago
Tutorial
aaardwark
80
23 days ago
Tutorial
rucin93
58
26 days ago
Tutorial
ffelixm
58
27 days ago
Tutorial
Ivanchik-cyber
122
28 May 2025
Tutorial
CFFinch62
121
28 May 2025
Tutorial
TheZwierzLF
67
27 May 2025
Tutorial
msbranicky
88
26 May 2025
Tutorial
BREMAUCY
66
26 May 2025
Tutorial
sciencejiho
80
26 May 2025
Tutorial
mbittner20
72
26 May 2025
Tutorial
Lv0Sys
96
25 May 2025
Tutorial
Lanssii
152
25 May 2025
Tutorial
erikji
67
23 May 2025
Tutorial
Zilbo314
106
21 May 2025
Tutorial
Moltres-Galar
65
21 May 2025
Tutorial
ryyyn
58
21 May 2025
Tutorial
Symmetori
88
20 May 2025
Tutorial
mossiegoat
65
19 May 2025
Tutorial
EnisEfe0
92
18 May 2025
Tutorial
ridingqwerty
152
16 May 2025
Tutorial
JSG-GIT
70
15 May 2025
Tutorial
aekkang
92
13 May 2025
Tutorial
adammielniczuk
67
12 May 2025
Tutorial
1024An
88
10 May 2025
Tutorial
48panda
90
6 May 2025
Tutorial
te-chnical
68
6 May 2025
Tutorial
Lodiscode
67
6 May 2025
Tutorial
andrewjc2000
66
5 May 2025
Tutorial
40fied4t
88
5 May 2025
Tutorial
albanian-laundromat
58
2 May 2025
Tutorial
davecame
66
1 May 2025
Tutorial
masterofsoap
67
24 Apr 2025
Tutorial
undefinedRyan
65
19 Apr 2025
Tutorial
FEZfan
58
19 Apr 2025
Tutorial
BlankSpruce
65
18 Apr 2025
Tutorial
codewrite
67
18 Apr 2025
Tutorial
adaGrad1
67
18 Apr 2025
Tutorial
emgordon154
58
18 Apr 2025
Tutorial
error256
65
17 Apr 2025
Tutorial
Andriamanitra
67
17 Apr 2025
Tutorial
DialFrost
65
17 Apr 2025
Tutorial
MeWhenI
58
17 Apr 2025
Tutorial
Mukundan314
58
17 Apr 2025
Tutorial
orthoplex
65
16 Apr 2025
Tutorial
nilan425
67
16 Apr 2025