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
Minesweeper
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
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
Calendar
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
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
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
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
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
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
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
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
Calendar
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Emirp Numbers
alexsave
129
13ms
15 hours ago
Emirp Numbers
HumanoidCPU
179
2ms
28 hours ago
Emirp Numbers
Shanethegamer
179
2ms
31 hours ago
Emirp Numbers
dokutan
179
2ms
32 hours ago
Emirp Numbers
CaedenHarper
179
2ms
33 hours ago
Emirp Numbers
DialFrost
🥇
67
682ms
35 hours ago
Emirp Numbers
snoozingnewt
179
2ms
35 hours ago
Emirp Numbers
madeforlosers
128
35ms
2 days ago
Emirp Numbers
Mukundan314
73
10ms
2 days ago
Emirp Numbers
HumanoidCPU
351
14ms
3 days ago
Emirp Numbers
blaztoma
71
10ms
3 days ago
Emirp Numbers
Emutis
76
9ms
3 days ago
Emirp Numbers
ethanlally
165
372ms
3 days ago
Emirp Numbers
Nxllpointer
82
14ms
3 days ago
Emirp Numbers
aalec
634
1ms
4 days ago
Emirp Numbers
HumanoidCPU
244
6ms
4 days ago
Emirp Numbers
albanian-laundromat
83
361ms
5 days ago
Emirp Numbers
HumanoidCPU
166
339ms
5 days ago
Emirp Numbers
GolfingSuccess
176
12ms
5 days ago
Emirp Numbers
GolfingSuccess
🥇
67
331ms
5 days ago
Emirp Numbers
GolfingSuccess
🥇
68
10ms
5 days ago
Emirp Numbers
MeWhenI
🥈
161
1,614ms
6 days ago
Emirp Numbers
MeWhenI
102
331ms
6 days ago
Emirp Numbers
Babafaba
84
322ms
6 days ago
Emirp Numbers
Babafaba
84
9ms
6 days ago
Emirp Numbers
luuumine
87
10ms
6 days ago
Emirp Numbers
solisolu
108
33ms
7 days ago
Emirp Numbers
JOrE20
447
2ms
7 days ago
Emirp Numbers
JOrE20
177
9ms
7 days ago
Emirp Numbers
gigaprofisi
145
38ms
8 days ago
Emirp Numbers
namelessiw
18
326ms
8 days ago
Emirp Numbers
Aquateraneal
140
13ms
9 days ago
Emirp Numbers
2bular
32
33ms
9 days ago
Emirp Numbers
gigaprofisi
300
1,561ms
10 days ago
Emirp Numbers
Chinay-Domitrix
125
2,646ms
10 days ago
Emirp Numbers
ian-h-chamberlain
156
156ms
10 days ago
Emirp Numbers
2bular
🥇
25
3ms
11 days ago
Emirp Numbers
zacjl
🥇
25
2ms
11 days ago
Emirp Numbers
dokutan
101
61ms
11 days ago
Emirp Numbers
qpwoeirut
101
10ms
13 days ago
Emirp Numbers
stefangimmillaro
65
787ms
15 days ago
Emirp Numbers
lboust
153
2,204ms
15 days ago
Emirp Numbers
kumavale
🥇
101
134ms
16 days ago
Emirp Numbers
acotis
🥇
101
125ms
16 days ago
Emirp Numbers
blaztoma
93
43ms
19 days ago
Emirp Numbers
KatieLG
193
136ms
20 days ago
Emirp Numbers
kmathis22
145
345ms
20 days ago
Emirp Numbers
dokutan
149
24ms
22 days ago
Emirp Numbers
dokutan
162
36ms
22 days ago
Emirp Numbers
sean-niemann
🥇
67
667ms
24 days ago
Emirp Numbers
Mabeloid
113
651ms
24 days ago
Emirp Numbers
Mabeloid
113
13ms
24 days ago
Emirp Numbers
madeforlosers
96
23ms
24 days ago
Emirp Numbers
ian-h-chamberlain
145
44ms
24 days ago
Emirp Numbers
iczelia
113
14ms
25 days ago
Emirp Numbers
CheeseCake628
99
518ms
26 days ago
Emirp Numbers
CheeseCake628
100
11ms
26 days ago
Emirp Numbers
SirObby
154
2ms
26 days ago
Emirp Numbers
GolfingSuccess
135
276ms
27 days ago
Emirp Numbers
XenThe
151
28ms
13 Oct 2025
Emirp Numbers
snoozingnewt
159
4ms
12 Oct 2025
Emirp Numbers
snoozingnewt
122
1,049ms
12 Oct 2025
Emirp Numbers
ovs-code
18
403ms
11 Oct 2025
Emirp Numbers
blaztoma
76
36ms
11 Oct 2025
Emirp Numbers
Code-Coder-coder
128
14ms
11 Oct 2025
Emirp Numbers
snoozingnewt
130
10ms
11 Oct 2025
Emirp Numbers
TJK-S
143
22ms
10 Oct 2025
Emirp Numbers
KasperKivimaeki
🥇
117
246ms
9 Oct 2025
Emirp Numbers
Yax42
88
2ms
9 Oct 2025
Emirp Numbers
snoozingnewt
181
389ms
9 Oct 2025
Emirp Numbers
snoozingnewt
150
118ms
8 Oct 2025
Emirp Numbers
CaedenHarper
188
353ms
8 Oct 2025
Emirp Numbers
snoozingnewt
93
79ms
8 Oct 2025
Emirp Numbers
Zstr25
356
322ms
7 Oct 2025
Emirp Numbers
albanian-laundromat
72
452ms
7 Oct 2025