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
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
Topological Sort
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
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
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
Topological Sort
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Card Number Validation
mossiegoat
165
26 hours ago
Card Number Validation
estomagordo
186
2 days ago
Card Number Validation
RaBa21
139
4 days ago
Card Number Validation
fkantelberg
113
6 days ago
Card Number Validation
Flekay
145
6 days ago
Card Number Validation
dirckvdende
118
7 days ago
Card Number Validation
clayboll99
176
7 days ago
Card Number Validation
andrewjc2000
109
8 days ago
Card Number Validation
ryyyn
91
9 days ago
Card Number Validation
Stockoh
130
13 days ago
Card Number Validation
GrayJoKing
91
15 days ago
Card Number Validation
KasperKivimaeki
96
16 days ago
Card Number Validation
gautambp
218
23 days ago
Card Number Validation
artem-aramma
140
18 Jun 2025
Card Number Validation
albanian-laundromat
112
16 Jun 2025
Card Number Validation
Lv0Sys
128
15 Jun 2025
Card Number Validation
keelimeguy
120
14 Jun 2025
Card Number Validation
smilesformiles3
140
12 Jun 2025
Card Number Validation
RobGLambert
142
8 Jun 2025
Card Number Validation
khvdm
💎
83
7 Jun 2025
Card Number Validation
hallvabo
86
4 Jun 2025
Card Number Validation
guilhem-roy
110
29 May 2025
Card Number Validation
WillowWispy
127
25 May 2025
Card Number Validation
kistlerf
143
19 May 2025
Card Number Validation
TheZwierzLF
150
17 May 2025
Card Number Validation
jipsong
115
12 May 2025
Card Number Validation
codewrite
142
5 May 2025
Card Number Validation
te-chnical
258
4 May 2025
Card Number Validation
KatieLG
118
20 Apr 2025
Card Number Validation
calebaitken
129
11 Apr 2025
Card Number Validation
Jaydosu
131
11 Apr 2025
Card Number Validation
klixel
119
9 Apr 2025
Card Number Validation
plcc0
118
6 Apr 2025
Card Number Validation
snoozingnewt
142
31 Mar 2025
Card Number Validation
calum12345
180
26 Mar 2025
Card Number Validation
chartung17
122
24 Mar 2025
Card Number Validation
HumanoidCPU
114
7 Mar 2025
Card Number Validation
bricknellj
100
4 Mar 2025
Card Number Validation
RobertHoeh
140
3 Mar 2025
Card Number Validation
PyryL
147
1 Mar 2025
Card Number Validation
xnor-gate
🥈
84
23 Feb 2025
Card Number Validation
Pyroan
117
22 Feb 2025
Card Number Validation
kops-cg
🥈
84
22 Feb 2025
Card Number Validation
Troon
120
17 Feb 2025
Card Number Validation
ndren
94
14 Feb 2025
Card Number Validation
sciencejiho
131
11 Feb 2025
Card Number Validation
ZakkkkAttackkkk
107
8 Feb 2025
Card Number Validation
ahmetdemirag
118
6 Feb 2025
Card Number Validation
vhoulbreque
123
4 Feb 2025
Card Number Validation
Emutis
133
4 Feb 2025
Card Number Validation
CutSandstone
143
30 Jan 2025
Card Number Validation
yokasuretsu
120
26 Jan 2025
Card Number Validation
Artemis21
113
23 Jan 2025
Card Number Validation
StefanHabel
108
23 Jan 2025
Card Number Validation
ridingqwerty
124
16 Jan 2025
Card Number Validation
rollershutter
130
10 Jan 2025
Card Number Validation
jmerle
140
10 Jan 2025
Card Number Validation
arebbsba
296
9 Jan 2025
Card Number Validation
lynn
93
8 Jan 2025
Card Number Validation
TheAtrossian
162
5 Jan 2025
Card Number Validation
ihatethefrench
136
4 Jan 2025
Card Number Validation
maxgodfrey2004
112
4 Jan 2025
Card Number Validation
cros107
110
1 Jan 2025
Card Number Validation
AidanWalter
540
1 Jan 2025
Card Number Validation
zt14427
182
27 Dec 2024
Card Number Validation
sean-niemann
90
23 Dec 2024
Card Number Validation
psbpsbp
119
19 Dec 2024
Card Number Validation
croc54
146
15 Dec 2024
Card Number Validation
Vaekor
165
15 Dec 2024
Card Number Validation
ThatAlo
158
9 Dec 2024
Card Number Validation
GeneralFabian
143
9 Dec 2024
Card Number Validation
CornerMercury
131
3 Dec 2024
Card Number Validation
JunkIce
145
3 Dec 2024
Card Number Validation
btjones0
101
2 Dec 2024
Card Number Validation
snydej
106
21 Nov 2024