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
Farey Sequence
acotis
69
12ms
30 hours ago
Farey Sequence
denkyuu1
127
20ms
4 days ago
Farey Sequence
ahmetdemirag
91
12ms
10 days ago
Farey Sequence
Andrey2001
129
20ms
10 days ago
Farey Sequence
jameswmccarty
195
18ms
17 days ago
Farey Sequence
40fied4t
135
12ms
19 days ago
Farey Sequence
Artemis21
113
13ms
20 days ago
Farey Sequence
KatieLG
65
12ms
25 days ago
Farey Sequence
77Tigers
149
12ms
13 Jan 2026
Farey Sequence
ryyyn
🥇
58
12ms
31 Dec 2025
Farey Sequence
Bmrl7
90
12ms
24 Dec 2025
Farey Sequence
Lv0Sys
79
17ms
9 Dec 2025
Farey Sequence
HPWiz
67
12ms
8 Dec 2025
Farey Sequence
solisolu
133
12ms
5 Dec 2025
Farey Sequence
sunleonid
🥇
58
11ms
29 Nov 2025
Farey Sequence
vhoulbreque
81
72ms
25 Nov 2025
Farey Sequence
blaztoma
69
11ms
22 Nov 2025
Farey Sequence
luuumine
65
12ms
19 Nov 2025
Farey Sequence
cthierfelder
142
21ms
14 Nov 2025
Farey Sequence
madeforlosers
2,208
13ms
11 Nov 2025
Farey Sequence
CommandLeo
111
21ms
1 Nov 2025
Farey Sequence
Babafaba
86
27ms
22 Oct 2025
Farey Sequence
snoozingnewt
60
11ms
15 Oct 2025
Farey Sequence
CornerMercury
60
11ms
7 Oct 2025
Farey Sequence
jacekwladzinski
88
10ms
3 Oct 2025
Farey Sequence
qpwoeirut
65
11ms
1 Oct 2025
Farey Sequence
albanian-laundromat
60
12ms
23 Sep 2025
Farey Sequence
InigoK
94
12ms
29 Aug 2025
Farey Sequence
wobblybits
142
21ms
20 Aug 2025
Farey Sequence
muser-logiccpu
257
13ms
19 Aug 2025
Farey Sequence
Techdude01
95
11ms
14 Aug 2025
Farey Sequence
Emutis
138
17ms
4 Aug 2025
Farey Sequence
trist224
109
11ms
3 Aug 2025
Farey Sequence
CaedenHarper
60
11ms
1 Aug 2025
Farey Sequence
Zhenyu-Bo
368
13ms
1 Aug 2025
Farey Sequence
robin-scragg
145
81ms
30 Jul 2025
Farey Sequence
addmai
130
20ms
30 Jul 2025
Farey Sequence
dirckvdende
78
11ms
28 Jul 2025
Farey Sequence
andrewjc2000
79
12ms
27 Jul 2025
Farey Sequence
Mikey-Beep
111
22ms
24 Jul 2025
Farey Sequence
wuduculfre
71
12ms
22 Jul 2025
Farey Sequence
RaBa21
147
21ms
14 Jul 2025
Farey Sequence
fkantelberg
82
24ms
12 Jul 2025
Farey Sequence
ndren
60
14ms
11 Jul 2025
Farey Sequence
Flekay
124
20ms
11 Jul 2025
Farey Sequence
KasperKivimaeki
69
11ms
5 Jul 2025
Farey Sequence
jipsong
110
24ms
5 Jul 2025
Farey Sequence
4atj
66
11ms
30 Jun 2025
Farey Sequence
gigaprofisi
162
21ms
24 Jun 2025
Farey Sequence
klixel
121
12ms
21 Jun 2025
Farey Sequence
Alban-Boissard
149
47ms
14 Jun 2025
Farey Sequence
keelimeguy
72
12ms
14 Jun 2025
Farey Sequence
CoolBvll
95
12ms
13 Jun 2025
Farey Sequence
TheZwierzLF
229
53ms
30 May 2025
Farey Sequence
guilhem-roy
79
12ms
29 May 2025
Farey Sequence
hiichbindermax
84
11ms
27 May 2025
Farey Sequence
damoose717
115
21ms
23 May 2025
Farey Sequence
ComputerKWasTaken
145
23ms
23 Apr 2025
Farey Sequence
emgordon154
60
12ms
18 Apr 2025
Farey Sequence
mbittner20
137
21ms
13 Apr 2025
Farey Sequence
Seek64
🥇
58
11ms
9 Apr 2025
Farey Sequence
bricknellj
79
11ms
2 Apr 2025
Farey Sequence
estomagordo
125
12ms
25 Mar 2025
Farey Sequence
plcc0
65
12ms
21 Mar 2025
Farey Sequence
Pyroan
81
11ms
18 Mar 2025
Farey Sequence
WillowWispy
182
11ms
14 Mar 2025
Farey Sequence
kevinnaviapaiva
243
12ms
6 Mar 2025
Farey Sequence
Troon
98
11ms
18 Feb 2025
Farey Sequence
CLOStrophobic
81
11ms
28 Jan 2025
Farey Sequence
neonchickens
201
12ms
22 Jan 2025
Farey Sequence
CodyKlingler
179
12ms
20 Jan 2025
Farey Sequence
bac0id
98
11ms
10 Jan 2025
Farey Sequence
returnitynet
4,366
12ms
3 Jan 2025
Farey Sequence
AidanWalter
273
15ms
3 Jan 2025
Farey Sequence
croc54
111
21ms
30 Dec 2024
Farey Sequence
edsrzf
69
11ms
20 Dec 2024
Farey Sequence
Herbert00709
81
11ms
27 Nov 2024
Farey Sequence
bzijlema
79
11ms
27 Nov 2024
Farey Sequence
JesseNoEyes
180
13ms
24 Nov 2024
Farey Sequence
JunkIce
104
12ms
24 Nov 2024