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
Mandelbrot
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
Topological Sort
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
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
Knight
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
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
Knight
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
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
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
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
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
ISBN
Upload-and-View
288
3 days ago
ISBN
wobblybits
131
4 days ago
ISBN
CaedenHarper
103
5 days ago
ISBN
cros107
108
10 days ago
ISBN
Luke44565
127
10 days ago
ISBN
madex
103
13 days ago
ISBN
Zhenyu-Bo
229
20 days ago
ISBN
addmai
118
21 days ago
ISBN
edsrzf
110
21 days ago
ISBN
mossiegoat
85
26 days ago
ISBN
ryyyn
103
19 Jul 2025
ISBN
RaBa21
89
19 Jul 2025
ISBN
KasperKivimaeki
104
11 Jul 2025
ISBN
Flekay
85
10 Jul 2025
ISBN
AnnoyedArt1256
151
3 Jul 2025
ISBN
1024An
127
2 Jul 2025
ISBN
4atj
97
30 Jun 2025
ISBN
bknower
126
26 Jun 2025
ISBN
moustave
102
25 Jun 2025
ISBN
PotatoSaladOverlord
153
20 Jun 2025
ISBN
smilesformiles3
124
14 Jun 2025
ISBN
Alban-Boissard
119
14 Jun 2025
ISBN
ffelixm
136
7 Jun 2025
ISBN
Lv0Sys
122
30 May 2025
ISBN
TheZwierzLF
118
27 May 2025
ISBN
damoose717
128
23 May 2025
ISBN
fuzzylojik-golf
107
19 May 2025
ISBN
kbeat
113
18 May 2025
ISBN
keelimeguy
76
15 May 2025
ISBN
40fied4t
127
15 May 2025
ISBN
te-chnical
190
4 May 2025
ISBN
Mukundan314
75
30 Apr 2025
ISBN
albanian-laundromat
82
28 Apr 2025
ISBN
pquline
129
23 Apr 2025
ISBN
BREMAUCY
111
15 Apr 2025
ISBN
estomagordo
132
25 Mar 2025
ISBN
chartung17
115
24 Mar 2025
ISBN
Europe2048
129
16 Mar 2025
ISBN
andrewjc2000
109
9 Mar 2025
ISBN
plcc0
81
3 Mar 2025
ISBN
HumanoidCPU
87
2 Mar 2025
ISBN
rollershutter
116
24 Feb 2025
ISBN
Pyroan
115
21 Feb 2025
ISBN
CornerMercury
76
14 Feb 2025
ISBN
Stockoh
119
13 Feb 2025
ISBN
kevinnaviapaiva
180
12 Feb 2025
ISBN
vhoulbreque
114
9 Feb 2025
ISBN
Emutis
105
4 Feb 2025
ISBN
Bulmenisaurus
106
2 Feb 2025
ISBN
sean-niemann
74
28 Jan 2025
ISBN
yokasuretsu
126
23 Jan 2025
ISBN
jamesthekee
125
22 Jan 2025
ISBN
ComputerKWasTaken
142
21 Jan 2025
ISBN
snoozingnewt
84
14 Jan 2025
ISBN
Artemis21
84
10 Jan 2025
ISBN
croc54
122
8 Jan 2025
ISBN
maxgodfrey2004
115
8 Jan 2025
ISBN
AidanWalter
884
1 Jan 2025
ISBN
GeneralFabian
153
14 Dec 2024
ISBN
JunkIce
85
25 Nov 2024
ISBN
lifthrasiir
78
20 Nov 2024
ISBN
hamilton-bonds
136
12 Nov 2024
ISBN
wh3n3v3r
91
11 Nov 2024
ISBN
sciencedjinn
131
8 Nov 2024
ISBN
orifu
118
4 Nov 2024
ISBN
retrohun
126
18 Oct 2024
ISBN
FortuiteMan
147
16 Oct 2024
ISBN
bzijlema
102
15 Oct 2024
ISBN
Mabeloid
116
7 Oct 2024
ISBN
pardouin
🥈
72
26 Sep 2024
ISBN
Seek64
99
24 Sep 2024
ISBN
Jacob385
96
17 Sep 2024
ISBN
KatieLG
77
14 Sep 2024
ISBN
jbjd
124
12 Sep 2024
ISBN
Schreipfelerer
136
11 Sep 2024