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
Gray Code Decoder
Gray Code Encoder
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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
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
ArkScript
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
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
Gray Code Decoder
Gray Code Encoder
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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
ISBN
ComradeSquirrel
123
10ms
10 days ago
ISBN
solisolu
83
13ms
23 days ago
ISBN
DayDun
79
12ms
25 days ago
ISBN
madeforlosers
98
9ms
31 Mar 2026
ISBN
emgordon154
77
10ms
18 Mar 2026
ISBN
tomh1012
94
11ms
12 Mar 2026
ISBN
Lv0Sys
80
11ms
27 Feb 2026
ISBN
denkyuu1
103
10ms
23 Feb 2026
ISBN
JOrE20
79
10ms
18 Feb 2026
ISBN
johnkiernander
97
10ms
14 Dec 2025
ISBN
Yax42
78
11ms
13 Nov 2025
ISBN
luuumine
91
10ms
12 Nov 2025
ISBN
levinwinter
79
10ms
21 Oct 2025
ISBN
snoozingnewt
109
10ms
9 Oct 2025
ISBN
KatieLG
89
10ms
5 Oct 2025
ISBN
iczelia
97
10ms
26 Sep 2025
ISBN
gigaprofisi
110
10ms
4 Sep 2025
ISBN
CaedenHarper
84
10ms
22 Aug 2025
ISBN
Ultra814
96
10ms
17 Aug 2025
ISBN
LordSir101
105
10ms
16 Aug 2025
ISBN
helbling
75
10ms
16 Aug 2025
ISBN
acollett89
105
10ms
1 Aug 2025
ISBN
kevinnaviapaiva
181
12ms
23 Jul 2025
ISBN
Lxkasmehl
127
10ms
17 Jul 2025
ISBN
Protothor
93
14ms
9 Jul 2025
ISBN
lukegustafson
75
11ms
26 Jun 2025
ISBN
Andrey-Plotnikov
93
11ms
21 Jun 2025
ISBN
dokutan
92
10ms
15 Jun 2025
ISBN
a6166231
104
10ms
29 May 2025
ISBN
HumanoidCPU
85
10ms
2 Mar 2025
ISBN
targrik
78
10ms
13 Feb 2025
ISBN
deancureton
84
11ms
29 Dec 2024
ISBN
eranws
102
11ms
23 Dec 2024
ISBN
Salutations45
80
11ms
27 Nov 2024
ISBN
alexsave
105
9ms
8 Nov 2024
ISBN
penbuvt
83
11ms
7 Nov 2024
ISBN
aliakseikalosha
118
9ms
8 Oct 2024
ISBN
xyangst
109
10ms
7 Oct 2024
ISBN
duckyluuk
78
9ms
4 Oct 2024
ISBN
unfinishedprogram
117
11ms
3 Oct 2024
ISBN
kpal81xd
89
10ms
15 Sep 2024
ISBN
stefangimmillaro
98
10ms
12 Sep 2024
ISBN
vlpx
75
9ms
1 Aug 2024
ISBN
Florian-Mt
175
11ms
9 Jul 2024
ISBN
MyXoToD
147
11ms
2 Jul 2024
ISBN
GrayJoKing
76
10ms
28 Jun 2024
ISBN
hacker112
107
9ms
24 Jun 2024
ISBN
mrxz
101
11ms
23 Jun 2024
ISBN
madex
110
9ms
6 Jun 2024
ISBN
junkondo-jp
95
11ms
2 Jun 2024
ISBN
xsot
75
11ms
13 Apr 2024
ISBN
neel11235813
79
11ms
25 Mar 2024
ISBN
trinityy-7
83
12ms
13 Mar 2024
ISBN
two-bad
92
11ms
25 Feb 2024
ISBN
Steffan153
75
11ms
24 Feb 2024
ISBN
mckymsh
110
12ms
17 Feb 2024
ISBN
voytxt
80
10ms
4 Feb 2024
ISBN
olleicua
89
11ms
3 Feb 2024
ISBN
itserasmus
102
11ms
17 Jan 2024
ISBN
dylanarmstrong
95
19ms
12 Jan 2024
ISBN
weliveinhell
90
10ms
11 Jan 2024
ISBN
sean-niemann
75
11ms
28 Dec 2023
ISBN
uttumuttu
79
10ms
21 Dec 2023
ISBN
danielphilpottwork
87
16ms
20 Dec 2023
ISBN
Yewzir
81
10ms
1 Dec 2023
ISBN
Argeento
75
12ms
18 Nov 2023
ISBN
rucin93
75
11ms
14 Nov 2023
ISBN
DialFrost
75
9ms
14 Nov 2023
ISBN
iliazeus
81
12ms
6 Nov 2023
ISBN
coreynash
77
13ms
19 Oct 2023
ISBN
ovs-code
79
11ms
29 Sep 2023
ISBN
msbranicky
113
15ms
8 Sep 2023
ISBN
MiranDaniel
133
11ms
31 Aug 2023
ISBN
apokryfos
128
12ms
19 Aug 2023
ISBN
biocommando
84
12ms
11 Aug 2023
ISBN
MeWhenI
76
11ms
9 Aug 2023
ISBN
Vaekor
127
11ms
9 Jul 2023
ISBN
Shanethegamer
77
11ms
4 Jul 2023
ISBN
nwellnhof
🥇
74
12ms
23 Jun 2023
ISBN
thisishowmymindworks
82
10ms
10 Jun 2023
ISBN
sebipopa
77
12ms
22 May 2023
ISBN
stefangabos
77
10ms
19 May 2023
ISBN
tayloia
80
11ms
16 May 2023
ISBN
13x1
84
11ms
15 May 2023
ISBN
zakariamouhid
106
9ms
14 May 2023
ISBN
adamnielson42
91
10ms
26 Apr 2023
ISBN
misono-nobuhiro
167
12ms
15 Mar 2023
ISBN
AlephSquirrel
87
11ms
15 Feb 2023
ISBN
Natanaelel
85
13ms
7 Feb 2023
ISBN
ShiraJoseph
102
11ms
28 Jan 2023
ISBN
csangos
337
12ms
5 Jan 2023
ISBN
astdefu
92
11ms
10 Dec 2022
ISBN
janbehrens
80
11ms
24 Nov 2022
ISBN
LukeBridges
107
13ms
8 Nov 2022
ISBN
SirFireball3521
82
12ms
31 Oct 2022
ISBN
dmrichwa
77
14ms
27 Oct 2022
ISBN
BloodStormKnight
107
12ms
15 Oct 2022
ISBN
vroup
96
10ms
2 Oct 2022
ISBN
rikiji
76
11ms
19 Sep 2022
ISBN
BambooleanLogic
96
12ms
20 Aug 2022