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
Hilbert Curve
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
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
Groovy
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
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
Groovy
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
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
Hilbert Curve
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
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
Bytes
Submitted
Card Number Validation
albanian-laundromat
90
41 hours ago
Card Number Validation
emgordon154
34
3 days ago
Card Number Validation
CaedenHarper
106
4 days ago
Card Number Validation
tomh1012
111
5 days ago
Card Number Validation
travisdoesmath
156
6 days ago
Card Number Validation
blaztoma
123
6 days ago
Card Number Validation
albanian-laundromat
🥉
127
7 days ago
Card Number Validation
Arkadios200
225
8 days ago
Card Number Validation
EthanJantz
230
8 days ago
Card Number Validation
Yax42
101
9 days ago
Card Number Validation
edsrzf
🥇
66
10 days ago
Card Number Validation
aDwarfNamedUrist
162
12 days ago
Card Number Validation
commandblockguy
98
13 days ago
Card Number Validation
sean-niemann
🥇
66
14 days ago
Card Number Validation
dokutan
116
14 days ago
Card Number Validation
DialFrost
🥉
76
14 days ago
Card Number Validation
edsrzf
🥈
89
15 days ago
Card Number Validation
MeWhenI
91
15 days ago
Card Number Validation
michelebastione
123
19 days ago
Card Number Validation
CaedenHarper
100
22 days ago
Card Number Validation
InigoK
108
23 days ago
Card Number Validation
denisfouchard
153
23 days ago
Card Number Validation
mossiegoat
155
23 days ago
Card Number Validation
osNiko
154
24 days ago
Card Number Validation
qpwoeirut
106
26 days ago
Card Number Validation
dokutan
🥈
2,475
26 days ago
Card Number Validation
AdrienHache
81
26 days ago
Card Number Validation
wobblybits
137
17 Aug 2025
Card Number Validation
primo-ppcg
💎
232
13 Aug 2025
Card Number Validation
DialFrost
🥈
304
13 Aug 2025
Card Number Validation
Mikey-Beep
349
12 Aug 2025
Card Number Validation
gigaprofisi
110
11 Aug 2025
Card Number Validation
LordSir101
97
10 Aug 2025
Card Number Validation
Upload-and-View
177
9 Aug 2025
Card Number Validation
sean-niemann
48
9 Aug 2025
Card Number Validation
sean-niemann
56
8 Aug 2025
Card Number Validation
Mikey-Beep
137
6 Aug 2025
Card Number Validation
vgamula
117
5 Aug 2025
Card Number Validation
albanian-laundromat
104
4 Aug 2025
Card Number Validation
Macweese
178
3 Aug 2025
Card Number Validation
kg583
117
2 Aug 2025
Card Number Validation
namelessiw
🥈
79
1 Aug 2025
Card Number Validation
psaban
149
31 Jul 2025
Card Number Validation
Zhenyu-Bo
228
30 Jul 2025
Card Number Validation
MeWhenI
96
30 Jul 2025
Card Number Validation
edsrzf
💎
118
27 Jul 2025
Card Number Validation
ryyyn
90
26 Jul 2025
Card Number Validation
edsrzf
145
26 Jul 2025
Card Number Validation
edsrzf
80
26 Jul 2025
Card Number Validation
edsrzf
🥉
108
26 Jul 2025
Card Number Validation
edsrzf
142
24 Jul 2025
Card Number Validation
edsrzf
💎
86
24 Jul 2025
Card Number Validation
edsrzf
💎
115
24 Jul 2025
Card Number Validation
edsrzf
🥇
109
24 Jul 2025
Card Number Validation
error256
🥇
109
24 Jul 2025
Card Number Validation
radarek
🥇
51
23 Jul 2025
Card Number Validation
SirBogman
🥉
63
23 Jul 2025
Card Number Validation
trinityy-7
80
23 Jul 2025
Card Number Validation
SirBogman
93
23 Jul 2025
Card Number Validation
not-a-pokemon
113
23 Jul 2025
Card Number Validation
edsrzf
119
23 Jul 2025
Card Number Validation
edsrzf
🥉
139
23 Jul 2025
Card Number Validation
edsrzf
🥉
109
23 Jul 2025
Card Number Validation
JayXon
💎
95
23 Jul 2025
Card Number Validation
CaedenHarper
100
22 Jul 2025
Card Number Validation
CaedenHarper
108
22 Jul 2025
Card Number Validation
jupj
114
20 Jul 2025
Card Number Validation
SirBogman
63
19 Jul 2025
Card Number Validation
RaBa21
135
19 Jul 2025
Card Number Validation
BREMAUCY
121
18 Jul 2025
Card Number Validation
andrewjc2000
106
17 Jul 2025
Card Number Validation
estomagordo
186
15 Jul 2025
Card Number Validation
acollett89
104
15 Jul 2025
Card Number Validation
GrayJoKing
55
13 Jul 2025
Card Number Validation
ovs-code
58
13 Jul 2025