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
Dragon Curve
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
Dragon Curve
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
Happy Numbers
FortuiteMan
132
260ms
49 mins ago
Happy Numbers
scpchicken
🥇
25
3ms
83 mins ago
Happy Numbers
BrunoVisnadi
77
44ms
2 hours ago
Happy Numbers
NameRandomString
108
15ms
10 hours ago
Happy Numbers
vang1ong7ang
108
41ms
15 hours ago
Happy Numbers
emgordon154
79
3ms
27 hours ago
Happy Numbers
sean-niemann
🥇
72
2ms
30 hours ago
Happy Numbers
HumanoidCPU
114
4ms
40 hours ago
Happy Numbers
vang1ong7ang
🥇
25
3ms
2 days ago
Happy Numbers
cuvam
130
11ms
5 days ago
Happy Numbers
MeWhenI
🥉
150
1,673ms
6 days ago
Happy Numbers
scpchicken
🥇
62
10ms
6 days ago
Happy Numbers
scpchicken
🥇
72
154ms
6 days ago
Happy Numbers
JNedd26
123
18ms
6 days ago
Happy Numbers
retrohun
313
1,600ms
7 days ago
Happy Numbers
Yewzir
🥉
150
1,691ms
7 days ago
Happy Numbers
jared-hughes
157
1,629ms
7 days ago
Happy Numbers
dcc5480
92
10ms
9 days ago
Happy Numbers
jusaka
231
12ms
9 days ago
Happy Numbers
jusaka
107
169ms
9 days ago
Happy Numbers
jusaka
108
104ms
9 days ago
Happy Numbers
jusaka
108
148ms
9 days ago
Happy Numbers
jusaka
113
9ms
9 days ago
Happy Numbers
jusaka
141
420ms
9 days ago
Happy Numbers
jusaka
428
5ms
9 days ago
Happy Numbers
jusaka
372
41ms
9 days ago
Happy Numbers
jusaka
166
11ms
9 days ago
Happy Numbers
jusaka
339
47ms
9 days ago
Happy Numbers
jusaka
223
64ms
9 days ago
Happy Numbers
jusaka
162
4ms
9 days ago
Happy Numbers
jusaka
161
61ms
9 days ago
Happy Numbers
jusaka
296
4ms
9 days ago
Happy Numbers
jusaka
369
6ms
9 days ago
Happy Numbers
jusaka
344
142ms
9 days ago
Happy Numbers
jusaka
263
9ms
9 days ago
Happy Numbers
jusaka
262
5ms
9 days ago
Happy Numbers
jusaka
399
283ms
9 days ago
Happy Numbers
jusaka
444
73ms
9 days ago
Happy Numbers
jusaka
68
35ms
9 days ago
Happy Numbers
jusaka
93
9ms
9 days ago
Happy Numbers
jusaka
234
5ms
9 days ago
Happy Numbers
jusaka
217
78ms
9 days ago
Happy Numbers
jusaka
243
10ms
9 days ago
Happy Numbers
jusaka
141
2ms
9 days ago
Happy Numbers
jusaka
288
188ms
9 days ago
Happy Numbers
msbranicky
220
1,842ms
9 days ago
Happy Numbers
KatieLG
338
1,686ms
9 days ago
Happy Numbers
jusaka
236
1,631ms
10 days ago
Happy Numbers
jusaka
198
1,657ms
10 days ago
Happy Numbers
emgordon154
155
1,660ms
10 days ago
Happy Numbers
lelbal
92
72ms
10 days ago
Happy Numbers
GolfingSuccess
76
2ms
10 days ago
Happy Numbers
HumanoidCPU
199
1,638ms
10 days ago
Happy Numbers
JayXon
🥇
142
1,710ms
10 days ago
Happy Numbers
CaedenHarper
199
1,677ms
10 days ago
Happy Numbers
Steffan153
🥇
142
1,622ms
10 days ago
Happy Numbers
dokutan
199
1,653ms
10 days ago
Happy Numbers
Steffan153
💎
103
4ms
10 days ago
Happy Numbers
kg583
🥈
104
3ms
10 days ago
Happy Numbers
blaztoma
🥇
49
37ms
11 days ago
Happy Numbers
michelebastione
129
492ms
12 days ago
Happy Numbers
solisolu
80
17ms
13 days ago
Happy Numbers
ComradeSquirrel
114
15ms
13 days ago
Happy Numbers
emgordon154
63
73ms
14 days ago
Happy Numbers
madex
65
9ms
14 days ago
Happy Numbers
snoozingnewt
🥇
25
3ms
14 days ago
Happy Numbers
madex
83
2ms
15 days ago
Happy Numbers
jusaka
148
10ms
16 days ago
Happy Numbers
jusaka
113
15ms
16 days ago
Happy Numbers
jusaka
127
4ms
16 days ago
Happy Numbers
jusaka
128
151ms
16 days ago
Happy Numbers
jusaka
136
73ms
16 days ago
Happy Numbers
jusaka
125
4ms
16 days ago
Happy Numbers
jusaka
255
9ms
16 days ago
Happy Numbers
jusaka
117
2ms
16 days ago
Happy Numbers
jusaka
151
47ms
16 days ago
Happy Numbers
jusaka
129
118ms
16 days ago
Happy Numbers
jusaka
117
36ms
16 days ago
Happy Numbers
jusaka
362
6ms
16 days ago
Happy Numbers
jusaka
124
108ms
16 days ago