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
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
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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
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
Partition Numbers
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Set
Snake
Sphenic Numbers
Star Wars GPT
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
Rockstar 2
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
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
Rockstar 2
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
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
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
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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
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
Partition Numbers
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Set
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
ISBN
Emutis
105
19 hours ago
ISBN
Bulmenisaurus
106
2 days ago
ISBN
sean-niemann
98
7 days ago
ISBN
yokasuretsu
126
12 days ago
ISBN
jamesthekee
125
13 days ago
ISBN
ComputerKWasTaken
142
14 days ago
ISBN
CaedenHarper
111
17 days ago
ISBN
ryyyn
110
18 days ago
ISBN
snoozingnewt
118
21 days ago
ISBN
cros107
110
26 days ago
ISBN
croc54
122
27 days ago
ISBN
maxgodfrey2004
115
8 Jan 2025
ISBN
AidanWalter
884
1 Jan 2025
ISBN
Artemis21
117
21 Dec 2024
ISBN
GeneralFabian
153
14 Dec 2024
ISBN
Europe2048
133
29 Nov 2024
ISBN
moustave
104
26 Nov 2024
ISBN
JunkIce
119
25 Nov 2024
ISBN
lifthrasiir
105
20 Nov 2024
ISBN
hamilton-bonds
136
12 Nov 2024
ISBN
wh3n3v3r
132
11 Nov 2024
ISBN
sciencedjinn
131
8 Nov 2024
ISBN
orifu
118
4 Nov 2024
ISBN
HumanoidCPU
136
4 Nov 2024
ISBN
retrohun
126
18 Oct 2024
ISBN
cdesodt
147
16 Oct 2024
ISBN
bzijlema
102
15 Oct 2024
ISBN
Mabeloid
116
7 Oct 2024
ISBN
pardouin
94
26 Sep 2024
ISBN
Seek64
99
24 Sep 2024
ISBN
hiichbindermax
134
17 Sep 2024
ISBN
Jacob385
142
17 Sep 2024
ISBN
jbjd
124
12 Sep 2024
ISBN
Schreipfelerer
136
11 Sep 2024
ISBN
LostSyntax21
125
9 Sep 2024
ISBN
EnTerr
104
8 Sep 2024
ISBN
AtengChen
143
7 Sep 2024
ISBN
NanduBC
130
3 Sep 2024
ISBN
Terobero
125
3 Sep 2024
ISBN
jatloe
108
26 Aug 2024
ISBN
PyryL
119
20 Aug 2024
ISBN
martion2007
118
14 Aug 2024
ISBN
dokutan
115
13 Aug 2024
ISBN
FranklinJiaChen
117
10 Aug 2024
ISBN
codingisgreatbutiamnot
130
9 Aug 2024
ISBN
sjrct
117
5 Aug 2024
ISBN
Ythaenagor
119
5 Aug 2024
ISBN
xnor-gate
94
30 Jul 2024
ISBN
AdamMorris377
127
29 Jul 2024
ISBN
emgordon154
119
27 Jul 2024
ISBN
bizy-coder
98
25 Jul 2024
ISBN
leon-w
124
24 Jul 2024
ISBN
BREMAUCY
118
23 Jul 2024
ISBN
fgrosshans
110
16 Jul 2024
ISBN
jameswmccarty
174
10 Jul 2024
ISBN
fourth-bit
107
10 Jul 2024
ISBN
Florian-Mt
215
9 Jul 2024
ISBN
CutSandstone
114
8 Jul 2024
ISBN
KatieLG
103
8 Jul 2024
ISBN
PixelSoftwareStudios
109
6 Jul 2024
ISBN
ovs-code
97
5 Jul 2024
ISBN
ahmetdemirag
112
30 Jun 2024
ISBN
DialFrost
100
28 Jun 2024
ISBN
Rubiksmath
🥇
91
28 Jun 2024
ISBN
abc7-12
103
26 Jun 2024
ISBN
VictorStenvers
125
26 Jun 2024
ISBN
bricknellj
101
22 Jun 2024
ISBN
drochom
141
22 Jun 2024
ISBN
Yewzir
102
22 Jun 2024
ISBN
Steffan153
97
21 Jun 2024
ISBN
duckyluuk
100
21 Jun 2024
ISBN
lynn
100
21 Jun 2024
ISBN
JayXon
96
21 Jun 2024
ISBN
GrayJoKing
🥇
91
21 Jun 2024
ISBN
madex
142
16 Jun 2024