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
Chars
Submitted
Card Number Validation
mossiegoat
108
23 hours ago
Card Number Validation
estomagordo
186
2 days ago
Card Number Validation
acollett89
104
2 days ago
Card Number Validation
GrayJoKing
55
4 days ago
Card Number Validation
RaBa21
95
4 days ago
Card Number Validation
ovs-code
37
4 days ago
Card Number Validation
albanian-laundromat
🥉
159
4 days ago
Card Number Validation
SirBogman
64
5 days ago
Card Number Validation
fkantelberg
82
5 days ago
Card Number Validation
SirBogman
138
6 days ago
Card Number Validation
Flekay
145
6 days ago
Card Number Validation
dirckvdende
118
6 days ago
Card Number Validation
clayboll99
176
7 days ago
Card Number Validation
ovs-code
40
7 days ago
Card Number Validation
kaascevich
134
8 days ago
Card Number Validation
vkptimon
776
8 days ago
Card Number Validation
andrewjc2000
109
8 days ago
Card Number Validation
SirBogman
33
8 days ago
Card Number Validation
SirBogman
🥈
50
8 days ago
Card Number Validation
ryyyn
91
9 days ago
Card Number Validation
targrik
152
9 days ago
Card Number Validation
XenThe
94
10 days ago
Card Number Validation
edsrzf
119
10 days ago
Card Number Validation
SirBogman
🥉
64
11 days ago
Card Number Validation
edsrzf
99
12 days ago
Card Number Validation
Stockoh
130
13 days ago
Card Number Validation
albanian-laundromat
88
14 days ago
Card Number Validation
GrayJoKing
91
15 days ago
Card Number Validation
KasperKivimaeki
96
16 days ago
Card Number Validation
weeble
74
16 days ago
Card Number Validation
albanian-laundromat
147
16 days ago
Card Number Validation
dokutan
89
19 days ago
Card Number Validation
dokutan
99
19 days ago
Card Number Validation
dokutan
89
19 days ago
Card Number Validation
daveberlin
106
19 days ago
Card Number Validation
Apataras
145
22 days ago
Card Number Validation
gautambp
218
22 days ago
Card Number Validation
primo-ppcg
💎
235
24 days ago
Card Number Validation
artem-aramma
140
18 Jun 2025
Card Number Validation
0xjac
158
17 Jun 2025
Card Number Validation
albanian-laundromat
81
16 Jun 2025
Card Number Validation
Lv0Sys
94
15 Jun 2025
Card Number Validation
Lv0Sys
128
15 Jun 2025
Card Number Validation
AlephSquirrel
43
15 Jun 2025
Card Number Validation
Herbert00709
105
14 Jun 2025
Card Number Validation
Herbert00709
124
14 Jun 2025
Card Number Validation
ejini6969
102
14 Jun 2025
Card Number Validation
keelimeguy
85
14 Jun 2025
Card Number Validation
biocommando
77
13 Jun 2025
Card Number Validation
themoonisacheese
18
13 Jun 2025
Card Number Validation
edsrzf
147
13 Jun 2025
Card Number Validation
ovs-code
51
13 Jun 2025
Card Number Validation
smilesformiles3
140
12 Jun 2025
Card Number Validation
RobGLambert
273
8 Jun 2025
Card Number Validation
RobGLambert
232
8 Jun 2025
Card Number Validation
RobGLambert
142
8 Jun 2025
Card Number Validation
emgordon154
76
7 Jun 2025
Card Number Validation
GrayJoKing
33
6 Jun 2025
Card Number Validation
GolfingSuccess
🥉
70
6 Jun 2025
Card Number Validation
namelessiw
85
5 Jun 2025
Card Number Validation
albanian-laundromat
123
4 Jun 2025
Card Number Validation
hallvabo
68
4 Jun 2025
Card Number Validation
error256
142
31 May 2025
Card Number Validation
JayXon
💎
104
31 May 2025
Card Number Validation
acotis
🥈
106
29 May 2025
Card Number Validation
guilhem-roy
110
29 May 2025
Card Number Validation
edsrzf
145
29 May 2025
Card Number Validation
MyXoToD
146
26 May 2025
Card Number Validation
lyphyser
15
25 May 2025
Card Number Validation
KatieLG
84
25 May 2025
Card Number Validation
WillowWispy
127
25 May 2025
Card Number Validation
sean-niemann
🥈
96
25 May 2025
Card Number Validation
JayXon
💎
84
24 May 2025
Card Number Validation
Shanethegamer
🥉
100
24 May 2025
Card Number Validation
CheeseCake628
160
19 May 2025