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
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
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
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
ArkScript
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
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
ArkScript
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
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
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Happy Numbers
dokutan
🥇
61
762ms
67 mins ago
Happy Numbers
dokutan
91
393ms
74 mins ago
Happy Numbers
dokutan
77
3ms
77 mins ago
Happy Numbers
dokutan
77
2ms
77 mins ago
Happy Numbers
dokutan
99
59ms
79 mins ago
Happy Numbers
dokutan
80
2ms
80 mins ago
Happy Numbers
dokutan
180
6ms
81 mins ago
Happy Numbers
Yewzir
14
19ms
29 hours ago
Happy Numbers
Solathian
95
3ms
32 hours ago
Happy Numbers
fantaize
290
124ms
47 hours ago
Happy Numbers
edsrzf
🥉
70
6ms
2 days ago
Happy Numbers
zgialor-lab
111
12ms
2 days ago
Happy Numbers
Aquateraneal
98
10ms
5 days ago
Happy Numbers
albanian-laundromat
68
4ms
6 days ago
Happy Numbers
snoozingnewt
70
61ms
6 days ago
Happy Numbers
Apfelvater
124
17ms
10 days ago
Happy Numbers
Steffan153
🥇
78
113ms
13 days ago
Happy Numbers
JayXon
🥈
74
2ms
13 days ago
Happy Numbers
Steffan153
💎
63
74ms
13 days ago
Happy Numbers
Steffan153
💎
72
1ms
13 days ago
Happy Numbers
Steffan153
64
122ms
13 days ago
Happy Numbers
Program-Pi
81
14ms
13 days ago
Happy Numbers
Steffan153
🥇
72
2ms
13 days ago
Happy Numbers
Steffan153
🥇
68
6ms
13 days ago
Happy Numbers
GrayJoKing
🥇
68
6ms
13 days ago
Happy Numbers
Protothor
82
10ms
14 days ago
Happy Numbers
JOrE20
77
10ms
15 days ago
Happy Numbers
JOrE20
69
9ms
15 days ago
Happy Numbers
netfri25
89
17ms
15 days ago
Happy Numbers
edsrzf
92
2ms
16 days ago
Happy Numbers
edsrzf
63
137ms
16 days ago
Happy Numbers
edsrzf
🥇
108
284ms
16 days ago
Happy Numbers
edsrzf
93
27ms
16 days ago
Happy Numbers
GolfingSuccess
74
7ms
16 days ago
Happy Numbers
frankgraziano
99
7ms
16 days ago
Happy Numbers
denkyuu1
97
283ms
17 days ago
Happy Numbers
emgordon154
29
3ms
18 days ago
Happy Numbers
CaedenHarper
180
6ms
18 days ago
Happy Numbers
KatieLG
115
2ms
18 days ago
Happy Numbers
KatieLG
225
7ms
18 days ago
Happy Numbers
dokutan
72
66ms
19 days ago
Happy Numbers
Steffan153
🥇
148
1,478ms
19 days ago
Happy Numbers
SuperFola
114
2ms
20 days ago
Happy Numbers
JOrE20
135
26ms
21 days ago
Happy Numbers
FoxInTheClouds
🥇
62
10ms
21 days ago
Happy Numbers
JOrE20
670
306ms
21 days ago
Happy Numbers
dokutan
61
356ms
22 days ago
Happy Numbers
dokutan
🥇
62
9ms
22 days ago
Happy Numbers
Steffan153
🥇
87
130ms
23 days ago
Happy Numbers
denkyuu1
55
37ms
25 days ago
Happy Numbers
dokutan
109
8ms
26 days ago
Happy Numbers
Steffan153
🥇
61
732ms
26 days ago
Happy Numbers
KasperKivimaeki
408
1ms
27 days ago
Happy Numbers
Steffan153
🥇
66
2,099ms
27 days ago
Happy Numbers
Flekay
🥇
62
9ms
12 Feb 2026
Happy Numbers
Steffan153
🥇
89
397ms
11 Feb 2026
Happy Numbers
CornerMercury
130
299ms
11 Feb 2026
Happy Numbers
frosster
84
1ms
9 Feb 2026
Happy Numbers
emgordon154
90
484ms
8 Feb 2026
Happy Numbers
SectorCorruptor
68
10ms
8 Feb 2026
Happy Numbers
Shanethegamer
114
2ms
7 Feb 2026
Happy Numbers
Shanethegamer
119
1ms
7 Feb 2026
Happy Numbers
emgordon154
103
61ms
7 Feb 2026
Happy Numbers
HumanoidCPU
119
1ms
6 Feb 2026
Happy Numbers
FlyingPenguin223
86
2ms
5 Feb 2026
Happy Numbers
tomh1012
178
292ms
5 Feb 2026
Happy Numbers
tomh1012
111
11ms
5 Feb 2026
Happy Numbers
Yewzir
94
1ms
5 Feb 2026
Happy Numbers
osNiko
79
54ms
4 Feb 2026
Happy Numbers
Andrey2001
85
413ms
28 Jan 2026
Happy Numbers
2bular
🥇
30
32ms
25 Jan 2026
Happy Numbers
retrohun
320
1,742ms
23 Jan 2026
Happy Numbers
CornerMercury
29
3ms
21 Jan 2026
Happy Numbers
Nxllpointer
36
3ms
18 Jan 2026
Happy Numbers
canissimia
🥇
60
2ms
16 Jan 2026
Happy Numbers
77Tigers
79
41ms
13 Jan 2026
Happy Numbers
KatieLG-Transpiler
141
3ms
9 Jan 2026
Happy Numbers
KatieLG-Transpiler
146
9ms
9 Jan 2026
Happy Numbers
KatieLG-Transpiler
144
2ms
9 Jan 2026
Happy Numbers
phucthaiv02
90
10ms
7 Jan 2026