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
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
Multitap Input
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
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
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
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
Multitap Input
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
DFA Simulator
JayXon
152
16ms
12 hours ago
DFA Simulator
JayXon
🥈
137
459ms
12 hours ago
DFA Simulator
sean-niemann
134
10ms
21 hours ago
DFA Simulator
sean-niemann
🥉
136
138ms
21 hours ago
DFA Simulator
Yax42
207
11ms
5 days ago
DFA Simulator
andrewjc2000
177
11ms
8 days ago
DFA Simulator
namelessiw
186
498ms
12 days ago
DFA Simulator
arcpolaris
409
501ms
12 days ago
DFA Simulator
blaztoma
151
4ms
12 days ago
DFA Simulator
blaztoma
167
11ms
15 days ago
DFA Simulator
emgordon154
🥈
392
1,655ms
15 days ago
DFA Simulator
KatieLG
183
37ms
15 days ago
DFA Simulator
TheZwierzLF
221
55ms
19 days ago
DFA Simulator
TheZwierzLF
279
669ms
19 days ago
DFA Simulator
TheZwierzLF
286
30ms
19 days ago
DFA Simulator
sean-niemann
140
608ms
25 days ago
DFA Simulator
sean-niemann
109
45ms
25 days ago
DFA Simulator
nemoyatpeace
297
19ms
27 days ago
DFA Simulator
edsrzf
🥇
234
152ms
24 Dec 2025
DFA Simulator
HumanoidCPU
221
10ms
23 Dec 2025
DFA Simulator
CornerMercury
156
15ms
20 Dec 2025
DFA Simulator
KasperKivimaeki
💎
189
60ms
18 Dec 2025
DFA Simulator
ravnskjaer
639
407ms
15 Dec 2025
DFA Simulator
YAJUE114514
213
11ms
10 Dec 2025
DFA Simulator
GrayJoKing
💎
169
109ms
9 Dec 2025
DFA Simulator
Lv0Sys
408
13ms
9 Dec 2025
DFA Simulator
Kacarott
🥈
174
68ms
9 Dec 2025
DFA Simulator
Yewzir
305
12ms
9 Dec 2025
DFA Simulator
JOrE20
468
14ms
7 Dec 2025
DFA Simulator
snoozingnewt
🥇
234
104ms
7 Dec 2025
DFA Simulator
snoozingnewt
156
493ms
6 Dec 2025
DFA Simulator
snoozingnewt
164
10ms
6 Dec 2025
DFA Simulator
IISResetMe
210
793ms
2 Dec 2025
DFA Simulator
rucin93
130
10ms
1 Dec 2025
DFA Simulator
KasperKivimaeki
174
29ms
1 Dec 2025
DFA Simulator
h3ra993huskp
272
448ms
30 Nov 2025
DFA Simulator
tigerdan2
332
491ms
30 Nov 2025
DFA Simulator
blaztoma
🥉
453
116ms
28 Nov 2025
DFA Simulator
snoozingnewt
174
315ms
27 Nov 2025
DFA Simulator
vhoulbreque
197
11ms
26 Nov 2025
DFA Simulator
Bmrl7
198
11ms
23 Nov 2025
DFA Simulator
snoozingnewt
319
284ms
23 Nov 2025
DFA Simulator
emgordon154
🥉
64
391ms
20 Nov 2025
DFA Simulator
snoozingnewt
🥉
239
115ms
20 Nov 2025
DFA Simulator
edsrzf
💎
164
42ms
20 Nov 2025
DFA Simulator
sean-niemann
🥉
206
3ms
19 Nov 2025
DFA Simulator
Babafaba
333
695ms
17 Nov 2025
DFA Simulator
Babafaba
340
12ms
17 Nov 2025
DFA Simulator
alexsave
173
10ms
13 Nov 2025
DFA Simulator
lelbal
191
11ms
12 Nov 2025
DFA Simulator
albanian-laundromat
🥈
267
44ms
11 Nov 2025
DFA Simulator
MeWhenI
💎
339
1,648ms
7 Nov 2025
DFA Simulator
MeWhenI
249
461ms
7 Nov 2025
DFA Simulator
madeforlosers
238
11ms
5 Nov 2025
DFA Simulator
bitsandbeyond
🥈
123
4,846ms
4 Nov 2025
DFA Simulator
CaedenHarper
391
250ms
2 Nov 2025
DFA Simulator
luuumine
230
13ms
29 Oct 2025
DFA Simulator
ryyyn
157
31ms
28 Oct 2025
DFA Simulator
emgordon154
160
11ms
24 Oct 2025
DFA Simulator
jkelly467
383
2,471ms
22 Oct 2025
DFA Simulator
aiwana
248
15ms
19 Oct 2025
DFA Simulator
snoozingnewt
🥈
239
98ms
18 Oct 2025
DFA Simulator
snoozingnewt
220
2,495ms
18 Oct 2025
DFA Simulator
snoozingnewt
🥉
574
159ms
18 Oct 2025
DFA Simulator
snoozingnewt
240
19ms
18 Oct 2025
DFA Simulator
snoozingnewt
🥉
194
795ms
18 Oct 2025
DFA Simulator
snoozingnewt
330
137ms
18 Oct 2025
DFA Simulator
snoozingnewt
307
573ms
18 Oct 2025
DFA Simulator
snoozingnewt
185
1,209ms
18 Oct 2025
DFA Simulator
snoozingnewt
267
3ms
18 Oct 2025
DFA Simulator
snoozingnewt
442
5ms
18 Oct 2025
DFA Simulator
snoozingnewt
157
37ms
18 Oct 2025
DFA Simulator
snoozingnewt
298
499ms
18 Oct 2025
DFA Simulator
snoozingnewt
243
6ms
18 Oct 2025
DFA Simulator
snoozingnewt
207
3ms
18 Oct 2025
DFA Simulator
snoozingnewt
🥉
457
35ms
18 Oct 2025
DFA Simulator
snoozingnewt
364
2ms
18 Oct 2025
DFA Simulator
snoozingnewt
247
11ms
18 Oct 2025
DFA Simulator
snoozingnewt
374
454ms
18 Oct 2025
DFA Simulator
snoozingnewt
303
256ms
18 Oct 2025