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
Jacobi Symbol
blaztoma
129
11ms
38 hours ago
Jacobi Symbol
celiendonze
206
12ms
18 days ago
Jacobi Symbol
ryyyn
136
31ms
24 days ago
Jacobi Symbol
plcc0
144
15ms
27 days ago
Jacobi Symbol
NoneTheFewer
222
11ms
25 Dec 2025
Jacobi Symbol
FortuiteMan
160
11ms
18 Dec 2025
Jacobi Symbol
Andrey2001
169
20ms
17 Dec 2025
Jacobi Symbol
KasperKivimaeki
151
18ms
17 Dec 2025
Jacobi Symbol
yujh-yujh
142
11ms
11 Dec 2025
Jacobi Symbol
Lv0Sys
169
10ms
7 Dec 2025
Jacobi Symbol
sean-niemann
142
11ms
4 Dec 2025
Jacobi Symbol
bizy-coder
141
33ms
27 Nov 2025
Jacobi Symbol
luuumine
166
18ms
24 Nov 2025
Jacobi Symbol
Babafaba
209
16ms
24 Nov 2025
Jacobi Symbol
CornerMercury
159
11ms
21 Nov 2025
Jacobi Symbol
madeforlosers
192
18ms
13 Nov 2025
Jacobi Symbol
CaedenHarper
154
32ms
6 Nov 2025
Jacobi Symbol
robin-scragg
190
20ms
3 Oct 2025
Jacobi Symbol
qpwoeirut
154
11ms
2 Oct 2025
Jacobi Symbol
snoozingnewt
168
19ms
1 Oct 2025
Jacobi Symbol
0dyse
200
17ms
13 Sep 2025
Jacobi Symbol
cros107
311
12ms
9 Sep 2025
Jacobi Symbol
InigoK
150
18ms
25 Aug 2025
Jacobi Symbol
gsprochette
306
19ms
21 Aug 2025
Jacobi Symbol
ndren
151
17ms
21 Aug 2025
Jacobi Symbol
andrewjc2000
162
17ms
18 Aug 2025
Jacobi Symbol
YAJUE114514
155
14ms
15 Aug 2025
Jacobi Symbol
FlorianCassayre
160
11ms
5 Aug 2025
Jacobi Symbol
Zhenyu-Bo
282
9ms
31 Jul 2025
Jacobi Symbol
muser-logiccpu
421
15ms
25 Jul 2025
Jacobi Symbol
fkantelberg
165
11ms
24 Jul 2025
Jacobi Symbol
RaBa21
176
20ms
19 Jul 2025
Jacobi Symbol
albanian-laundromat
190
17ms
12 Jul 2025
Jacobi Symbol
AstroOrbis
189
17ms
12 Jul 2025
Jacobi Symbol
Flekay
169
19ms
10 Jul 2025
Jacobi Symbol
keelimeguy
161
38ms
14 Jun 2025
Jacobi Symbol
TheZwierzLF
170
17ms
22 May 2025
Jacobi Symbol
5cw
135
12ms
4 May 2025
Jacobi Symbol
Seek64
132
32ms
1 May 2025
Jacobi Symbol
HumanoidCPU
158
11ms
9 Mar 2025
Jacobi Symbol
ahmetdemirag
160
18ms
6 Mar 2025
Jacobi Symbol
CLOStrophobic
162
18ms
23 Jan 2025
Jacobi Symbol
croc54
175
19ms
8 Jan 2025
Jacobi Symbol
AidanWalter
709
11ms
3 Jan 2025
Jacobi Symbol
emgordon154
141
12ms
28 Dec 2024
Jacobi Symbol
JunkIce
169
19ms
25 Nov 2024
Jacobi Symbol
snydej
134
31ms
15 Nov 2024
Jacobi Symbol
lifthrasiir
145
11ms
14 Nov 2024
Jacobi Symbol
wh3n3v3r
182
10ms
11 Nov 2024
Jacobi Symbol
AtengChen
255
11ms
24 Aug 2024
Jacobi Symbol
jatloe
149
11ms
23 Aug 2024
Jacobi Symbol
alexeldridge
206
18ms
8 Aug 2024
Jacobi Symbol
duckyluuk
159
33ms
15 Jul 2024
Jacobi Symbol
bac0id
188
17ms
5 Jul 2024
Jacobi Symbol
rollershutter
182
11ms
4 Jul 2024
Jacobi Symbol
CutSandstone
185
18ms
4 Jul 2024
Jacobi Symbol
bricknellj
147
10ms
24 Jun 2024
Jacobi Symbol
dokutan
176
11ms
23 Jun 2024
Jacobi Symbol
stertooy
150
33ms
15 Jun 2024
Jacobi Symbol
ComputerKWasTaken
261
17ms
9 Jun 2024
Jacobi Symbol
ovs-code
🥉
121
185ms
5 Jun 2024
Jacobi Symbol
Yewzir
167
18ms
3 Jun 2024
Jacobi Symbol
MeWhenI
141
11ms
22 May 2024
Jacobi Symbol
madex
291
13ms
8 May 2024
Jacobi Symbol
pardouin
128
33ms
22 Apr 2024
Jacobi Symbol
elgan65536
154
12ms
4 Apr 2024
Jacobi Symbol
jtaxen
169
21ms
1 Apr 2024
Jacobi Symbol
inverseLorentz
165
11ms
24 Mar 2024
Jacobi Symbol
yuchuehw
208
17ms
25 Feb 2024
Jacobi Symbol
Eilonlif
181
11ms
15 Feb 2024
Jacobi Symbol
mathisfun271
259
12ms
4 Feb 2024
Jacobi Symbol
dylanjones92
290
14ms
26 Jan 2024
Jacobi Symbol
SB-945
172
19ms
24 Jan 2024
Jacobi Symbol
DialFrost
152
124ms
14 Jan 2024
Jacobi Symbol
Alex-x90
170
18ms
15 Dec 2023
Jacobi Symbol
JayXon
126
35ms
7 Nov 2023
Jacobi Symbol
eiburns
207
17ms
26 Oct 2023
Jacobi Symbol
GrayJoKing
127
31ms
25 Oct 2023
Jacobi Symbol
Command-Master
146
18ms
29 Sep 2023
Jacobi Symbol
stefangimmillaro
150
11ms
19 Sep 2023