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
Bytes
Time
Submitted
Emirp Numbers (Long)
JOrE20
119
281ms
3 days ago
Emirp Numbers (Long)
Yax42
87
86ms
13 days ago
Emirp Numbers (Long)
johnkiernander
126
3,308ms
13 Dec 2025
Emirp Numbers (Long)
Lv0Sys
99
331ms
7 Dec 2025
Emirp Numbers (Long)
rucin93
87
1,119ms
3 Dec 2025
Emirp Numbers (Long)
Cube14yt
128
70ms
17 Nov 2025
Emirp Numbers (Long)
alexsave
130
23ms
13 Nov 2025
Emirp Numbers (Long)
madeforlosers
96
1,417ms
20 Oct 2025
Emirp Numbers (Long)
XenThe
152
1,738ms
13 Oct 2025
Emirp Numbers (Long)
snoozingnewt
130
13ms
11 Oct 2025
Emirp Numbers (Long)
olleicua
1,162
9ms
11 Sep 2025
Emirp Numbers (Long)
gigaprofisi
149
54ms
1 Sep 2025
Emirp Numbers (Long)
CaedenHarper
123
760ms
31 Aug 2025
Emirp Numbers (Long)
Ultra814
152
12ms
21 Aug 2025
Emirp Numbers (Long)
JayXon
🥈
73
108ms
18 Aug 2025
Emirp Numbers (Long)
DialFrost
82
13ms
16 Aug 2025
Emirp Numbers (Long)
SebassNoob
125
197ms
7 Aug 2025
Emirp Numbers (Long)
acollett89
99
354ms
4 Aug 2025
Emirp Numbers (Long)
clayboll99
184
81ms
18 Jul 2025
Emirp Numbers (Long)
Lxkasmehl
165
14ms
17 Jul 2025
Emirp Numbers (Long)
Protothor
118
101ms
2 Jul 2025
Emirp Numbers (Long)
BREMAUCY
132
53ms
29 Jun 2025
Emirp Numbers (Long)
Charlie85270
150
99ms
24 Jun 2025
Emirp Numbers (Long)
Irratix
95
4,755ms
8 Jun 2025
Emirp Numbers (Long)
dokutan
116
1,221ms
5 Jun 2025
Emirp Numbers (Long)
targrik
113
199ms
12 May 2025
Emirp Numbers (Long)
MyXoToD
174
11ms
9 May 2025
Emirp Numbers (Long)
voytxt
109
18ms
1 Mar 2025
Emirp Numbers (Long)
kevinnaviapaiva
299
21ms
26 Feb 2025
Emirp Numbers (Long)
goodwyna21
130
2,226ms
22 Jan 2025
Emirp Numbers (Long)
eranws
154
17ms
23 Dec 2024
Emirp Numbers (Long)
stefangimmillaro
100
111ms
13 Dec 2024
Emirp Numbers (Long)
noahhorlacher
167
15ms
9 Dec 2024
Emirp Numbers (Long)
823126
128
129ms
4 Dec 2024
Emirp Numbers (Long)
ovs-code
🥉
76
46ms
17 Nov 2024
Emirp Numbers (Long)
emgordon154
123
18ms
6 Nov 2024
Emirp Numbers (Long)
inventshah
93
2,424ms
30 Oct 2024
Emirp Numbers (Long)
LukeBridges
121
102ms
8 Oct 2024
Emirp Numbers (Long)
TheRealOhead
145
55ms
7 Oct 2024
Emirp Numbers (Long)
xyangst
115
48ms
7 Oct 2024
Emirp Numbers (Long)
vlpx
85
1,153ms
23 Sep 2024
Emirp Numbers (Long)
Mabeloid
1,403
11ms
17 Sep 2024
Emirp Numbers (Long)
Maznek
97
515ms
18 Aug 2024
Emirp Numbers (Long)
HumanoidCPU
183
54ms
4 Aug 2024
Emirp Numbers (Long)
Florian-Mt
121
71ms
1 Aug 2024
Emirp Numbers (Long)
bac0id
134
26ms
29 Jun 2024
Emirp Numbers (Long)
hacker112
1,165
10ms
19 Jun 2024
Emirp Numbers (Long)
JackieAlacrity2373
635
12ms
11 Jun 2024
Emirp Numbers (Long)
thisishowmymindworks
105
990ms
9 Jun 2024
Emirp Numbers (Long)
helbling
105
4,405ms
5 May 2024
Emirp Numbers (Long)
sean-niemann
92
1,062ms
27 Mar 2024
Emirp Numbers (Long)
lukegustafson
86
1,889ms
5 Mar 2024
Emirp Numbers (Long)
Yewzir
113
14ms
12 Feb 2024
Emirp Numbers (Long)
two-bad
101
885ms
6 Feb 2024
Emirp Numbers (Long)
dylanarmstrong
103
4,235ms
24 Jan 2024
Emirp Numbers (Long)
weliveinhell
96
679ms
15 Jan 2024
Emirp Numbers (Long)
tayloia
92
1,237ms
5 Jan 2024
Emirp Numbers (Long)
efgen
96
1,505ms
28 Dec 2023
Emirp Numbers (Long)
Lydxn
💎
71
84ms
22 Dec 2023
Emirp Numbers (Long)
trinityy-7
107
263ms
6 Dec 2023
Emirp Numbers (Long)
Argeento
97
1,124ms
1 Nov 2023
Emirp Numbers (Long)
Davr1
103
97ms
16 Oct 2023
Emirp Numbers (Long)
coreynash
100
4,187ms
10 Oct 2023
Emirp Numbers (Long)
msbranicky
173
91ms
8 Sep 2023
Emirp Numbers (Long)
raszpi
143
854ms
3 Sep 2023
Emirp Numbers (Long)
apokryfos
177
1,108ms
19 Aug 2023
Emirp Numbers (Long)
fizhes
124
334ms
18 Jun 2023
Emirp Numbers (Long)
zakariamouhid
111
182ms
13 Jun 2023
Emirp Numbers (Long)
adamnielson42
129
3,929ms
25 Apr 2023
Emirp Numbers (Long)
Shanethegamer
102
23ms
24 Apr 2023
Emirp Numbers (Long)
nwellnhof
79
50ms
14 Mar 2023
Emirp Numbers (Long)
amiralitaheri
108
22ms
23 Feb 2023
Emirp Numbers (Long)
Steffan153
90
4,905ms
29 Jan 2023
Emirp Numbers (Long)
varhammer
218
14ms
2 Jan 2023
Emirp Numbers (Long)
randolchance
105
104ms
1 Jan 2023
Emirp Numbers (Long)
ptforness
184
148ms
31 Dec 2022
Emirp Numbers (Long)
retrohun
1,403
10ms
27 Dec 2022
Emirp Numbers (Long)
biocommando
103
1,007ms
26 Dec 2022
Emirp Numbers (Long)
FrederikHutfless
144
340ms
22 Dec 2022
Emirp Numbers (Long)
CatsAreFluffy
115
84ms
28 Nov 2022