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
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
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
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
><>
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
ALGOL 68
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
><>
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
ALGOL 68
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
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
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
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
Chars
Time
Submitted
Emirp Numbers
Flekay
64
11ms
6 hours ago
Emirp Numbers
plcc0
21
33ms
28 hours ago
Emirp Numbers
rotemkm
113
13ms
37 hours ago
Emirp Numbers
netfri25
113
14ms
37 hours ago
Emirp Numbers
Steffan153
🥇
44
785ms
46 hours ago
Emirp Numbers
dokutan
74
3ms
2 days ago
Emirp Numbers
JOrE20
77
9ms
2 days ago
Emirp Numbers
edsrzf
105
28ms
3 days ago
Emirp Numbers
Steffan153
🥇
48
2,259ms
3 days ago
Emirp Numbers
JOrE20
227
27ms
4 days ago
Emirp Numbers
Steffan153
73
2ms
5 days ago
Emirp Numbers
Steffan153
🥇
72
355ms
5 days ago
Emirp Numbers
retrohun
179
1ms
6 days ago
Emirp Numbers
Yewzir
80
1ms
6 days ago
Emirp Numbers
frankgraziano
153
6ms
7 days ago
Emirp Numbers
dokutan
72
60ms
7 days ago
Emirp Numbers
SectorCorruptor
61
9ms
7 days ago
Emirp Numbers
Shanethegamer
143
7ms
8 days ago
Emirp Numbers
Shanethegamer
148
1ms
8 days ago
Emirp Numbers
kasarino
243
43ms
9 days ago
Emirp Numbers
kasarino
189
2ms
9 days ago
Emirp Numbers
kasarino
179
10ms
9 days ago
Emirp Numbers
lelbal
79
10ms
9 days ago
Emirp Numbers
HumanoidCPU
148
2ms
10 days ago
Emirp Numbers
TheSecondComing123
80
11ms
11 days ago
Emirp Numbers
denkyuu1
78
41ms
13 days ago
Emirp Numbers
Yax42
87
12ms
20 days ago
Emirp Numbers
dokutan
97
80ms
23 days ago
Emirp Numbers
retrohun
353
1,640ms
23 days ago
Emirp Numbers
dokutan
183
118ms
16 Jan 2026
Emirp Numbers
dokutan
84
8ms
11 Jan 2026
Emirp Numbers
77Tigers
135
11ms
10 Jan 2026
Emirp Numbers
Florian-Mt
212
404ms
10 Jan 2026
Emirp Numbers
emgordon154
206
1,676ms
9 Jan 2026
Emirp Numbers
KatieLG-Transpiler
174
2ms
9 Jan 2026
Emirp Numbers
KatieLG-Transpiler
179
9ms
9 Jan 2026
Emirp Numbers
KatieLG-Transpiler
177
3ms
9 Jan 2026
Emirp Numbers
051
97
16ms
8 Jan 2026
Emirp Numbers
amazingalek
75
407ms
6 Jan 2026
Emirp Numbers
mwarvik
154
363ms
5 Jan 2026
Emirp Numbers
nemoyatpeace
115
27ms
3 Jan 2026
Emirp Numbers
GolfingSuccess
143
6ms
2 Jan 2026
Emirp Numbers
DialFrost
73
6ms
1 Jan 2026
Emirp Numbers
DialFrost
94
474ms
1 Jan 2026
Emirp Numbers
kg583
143
5ms
1 Jan 2026
Emirp Numbers
HumanoidCPU
144
5ms
1 Jan 2026
Emirp Numbers
solisolu
105
15ms
30 Dec 2025
Emirp Numbers
ryyyn
61
10ms
30 Dec 2025
Emirp Numbers
HumanoidCPU
109
766ms
27 Dec 2025
Emirp Numbers
michelebastione
154
432ms
26 Dec 2025
Emirp Numbers
dokutan
98
3ms
26 Dec 2025
Emirp Numbers
NoneTheFewer
161
12ms
25 Dec 2025
Emirp Numbers
Shanethegamer
156
3ms
25 Dec 2025
Emirp Numbers
CommandLeo
79
10ms
23 Dec 2025
Emirp Numbers
sean-niemann
74
2ms
23 Dec 2025
Emirp Numbers
H3XDaemon
67
11ms
20 Dec 2025
Emirp Numbers
aadenboy
149
2ms
18 Dec 2025
Emirp Numbers
AlephSquirrel
26
3ms
18 Dec 2025
Emirp Numbers
KasperKivimaeki
69
10ms
17 Dec 2025
Emirp Numbers
JayXon
🥇
57
137ms
17 Dec 2025
Emirp Numbers
bizy-coder
70
11ms
17 Dec 2025
Emirp Numbers
Mukundan314
59
29ms
17 Dec 2025
Emirp Numbers
sunleonid
67
31ms
17 Dec 2025
Emirp Numbers
TheZwierzLF
94
39ms
16 Dec 2025
Emirp Numbers
ian-h-chamberlain
153
128ms
16 Dec 2025
Emirp Numbers
DialFrost
79
5ms
16 Dec 2025
Emirp Numbers
JOrE20
135
7ms
15 Dec 2025
Emirp Numbers
ravnskjaer
218
519ms
15 Dec 2025
Emirp Numbers
DialFrost
77
3ms
15 Dec 2025
Emirp Numbers
johnkiernander
125
42ms
13 Dec 2025
Emirp Numbers
dokutan
90
121ms
12 Dec 2025
Emirp Numbers
Maashau
152
2ms
12 Dec 2025
Emirp Numbers
error256
🥇
41
61ms
10 Dec 2025
Emirp Numbers
snoozingnewt
🥇
58
14ms
9 Dec 2025
Emirp Numbers
Kacarott
🥇
41
61ms
9 Dec 2025
Emirp Numbers
luuumine
142
139ms
8 Dec 2025
Emirp Numbers
snoozingnewt
177
1,436ms
8 Dec 2025
Emirp Numbers
sean-niemann
🥇
72
107ms
7 Dec 2025
Emirp Numbers
HumanoidCPU
189
300ms
7 Dec 2025
Emirp Numbers
snoozingnewt
🥇
57
70ms
6 Dec 2025