Recent Solutions
Prev Hole
Play Hole
Next Hole
Achievements
Cheevos
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
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
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
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
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
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
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
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Card Number Validation
solisolu
103
2ms
70 mins ago
Card Number Validation
jusaka
175
159ms
71 mins ago
Card Number Validation
denkyuu1
81
39ms
14 hours ago
Card Number Validation
vang1ong7ang
247
197ms
18 hours ago
Card Number Validation
jusaka
136
516ms
20 hours ago
Card Number Validation
jusaka
170
355ms
23 hours ago
Card Number Validation
jusaka
135
2ms
23 hours ago
Card Number Validation
jusaka
102
17ms
23 hours ago
Card Number Validation
Inbarw100
222
3ms
31 hours ago
Card Number Validation
aksyristos
102
18ms
44 hours ago
Card Number Validation
edsrzf
💎
107
1,321ms
2 days ago
Card Number Validation
edsrzf
💎
143
29ms
2 days ago
Card Number Validation
denkyuu1
115
293ms
3 days ago
Card Number Validation
ComradeSquirrel
200
11ms
3 days ago
Card Number Validation
ComradeSquirrel
119
10ms
4 days ago
Card Number Validation
zacjl
🥇
109
9ms
6 days ago
Card Number Validation
fuzzylojik-golf
123
17ms
6 days ago
Card Number Validation
MeWhenI
102
155ms
7 days ago
Card Number Validation
edsrzf
🥈
131
175ms
7 days ago
Card Number Validation
edsrzf
💎
82
5ms
8 days ago
Card Number Validation
kg583
🥈
84
5ms
8 days ago
Card Number Validation
GolfingSuccess
🥉
174
34ms
8 days ago
Card Number Validation
JRaspass
74
3ms
9 days ago
Card Number Validation
Yax42
108
2ms
9 days ago
Card Number Validation
Matter1024
149
445ms
11 days ago
Card Number Validation
edsrzf
💎
142
33ms
12 days ago
Card Number Validation
BrunoVisnadi
99
17ms
12 days ago
Card Number Validation
retrohun
121
10ms
12 days ago
Card Number Validation
edsrzf
💎
110
7ms
12 days ago
Card Number Validation
edsrzf
🥇
143
43ms
12 days ago
Card Number Validation
edsrzf
🥇
74
2,636ms
12 days ago
Card Number Validation
kg583
🥈
156
48ms
18 days ago
Card Number Validation
denkyuu1
116
11ms
18 days ago
Card Number Validation
dokutan
110
63ms
19 days ago
Card Number Validation
solisolu
99
17ms
21 days ago
Card Number Validation
dokutan
107
956ms
21 days ago
Card Number Validation
dokutan
92
392ms
21 days ago
Card Number Validation
dokutan
102
16ms
21 days ago
Card Number Validation
tomh1012
108
11ms
21 days ago
Card Number Validation
fantaize
330
201ms
23 days ago
Card Number Validation
denkyuu1
123
16ms
24 days ago
Card Number Validation
Protothor
122
10ms
24 days ago
Card Number Validation
albanian-laundromat
161
27ms
24 days ago
Card Number Validation
janAkali
147
355ms
24 days ago
Card Number Validation
CaedenHarper
99
425ms
25 days ago
Card Number Validation
Aquateraneal
137
17ms
25 days ago
Card Number Validation
albanian-laundromat
108
55ms
6 Mar 2026
Card Number Validation
tomh1012
137
17ms
4 Mar 2026
Card Number Validation
JayXon
💎
71
167ms
1 Mar 2026
Card Number Validation
Steffan153
🥈
72
167ms
28 Feb 2026
Card Number Validation
rucin93
🥈
72
153ms
28 Feb 2026
Card Number Validation
Steffan153
🥇
64
1,072ms
27 Feb 2026
Card Number Validation
GrayJoKing
🥈
101
6ms
27 Feb 2026
Card Number Validation
anter69
71
1,213ms
25 Feb 2026
Card Number Validation
anter69
65
38ms
25 Feb 2026
Card Number Validation
anter69
94
16ms
25 Feb 2026
Card Number Validation
edsrzf
💎
98
7ms
25 Feb 2026
Card Number Validation
lukegustafson
90
17ms
25 Feb 2026
Card Number Validation
albanian-laundromat
72
1ms
25 Feb 2026
Card Number Validation
Lv0Sys
76
9ms
22 Feb 2026
Card Number Validation
Lv0Sys
107
17ms
22 Feb 2026
Card Number Validation
RodAlc24
149
17ms
22 Feb 2026
Card Number Validation
xsot
66
1,236ms
22 Feb 2026
Card Number Validation
lukegustafson
71
10ms
22 Feb 2026
Card Number Validation
xsot
🥇
47
2ms
22 Feb 2026
Card Number Validation
frankgraziano
🥉
128
7ms
21 Feb 2026
Card Number Validation
JOrE20
124
17ms
21 Feb 2026
Card Number Validation
edsrzf
🥈
104
437ms
21 Feb 2026
Card Number Validation
edsrzf
🥈
83
103ms
21 Feb 2026
Card Number Validation
edsrzf
🥇
64
1,657ms
21 Feb 2026
Card Number Validation
edsrzf
🥈
135
272ms
21 Feb 2026
Card Number Validation
edsrzf
🥈
121
3ms
21 Feb 2026
Card Number Validation
Steffan153
🥈
74
420ms
21 Feb 2026
Card Number Validation
Steffan153
🥈
84
20ms
21 Feb 2026
Card Number Validation
Steffan153
🥇
78
2ms
20 Feb 2026
Card Number Validation
edsrzf
🥉
107
411ms
20 Feb 2026
Card Number Validation
edsrzf
72
9ms
20 Feb 2026
Card Number Validation
edsrzf
🥇
78
2ms
20 Feb 2026
Card Number Validation
kg583
80
384ms
20 Feb 2026
Card Number Validation
kg583
🥇
143
40ms
20 Feb 2026