Recent Solutions
Prev Hole
Play Hole
Next Hole
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
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
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
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
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
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
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
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
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
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
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
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
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
SI Units
KatieLG
313
4 days ago
SI Units
qpwoeirut
766
4 days ago
SI Units
stefangimmillaro
🥈
558
4 days ago
SI Units
CaedenHarper
684
5 days ago
SI Units
blaztoma
548
7 days ago
SI Units
Schmitt-Very-Cool
945
7 days ago
SI Units
snoozingnewt
831
10 days ago
SI Units
jared-hughes
565
12 days ago
SI Units
jerrandolph
766
14 days ago
SI Units
Yax42
564
15 days ago
SI Units
sean-niemann
1,619
15 days ago
SI Units
edsrzf
💎
537
16 days ago
SI Units
KatieLG
15,826
16 days ago
SI Units
SirBogman
🥈
413
17 days ago
SI Units
KasperKivimaeki
🥈
500
17 days ago
SI Units
CaedenHarper
🥈
546
20 days ago
SI Units
CaedenHarper
537
20 days ago
SI Units
CaedenHarper
550
20 days ago
SI Units
albanian-laundromat
🥈
1,373
22 days ago
SI Units
KatieLG
313
25 days ago
SI Units
MeWhenI
🥉
600
25 days ago
SI Units
KatieLG
🥉
48,509
26 days ago
SI Units
edsrzf
💎
432
26 days ago
SI Units
edsrzf
💎
837
27 days ago
SI Units
InigoK
652
11 Sep 2025
SI Units
snoozingnewt
🥉
962
10 Sep 2025
SI Units
CaedenHarper
597
5 Sep 2025
SI Units
cthierfelder
905
4 Sep 2025
SI Units
XenThe
806
3 Sep 2025
SI Units
commandblockguy
513
1 Sep 2025
SI Units
emgordon154
🥉
514
30 Aug 2025
SI Units
edsrzf
💎
638
28 Aug 2025
SI Units
pardouin
💎
190
27 Aug 2025
SI Units
BREMAUCY
622
27 Aug 2025
SI Units
pardouin
💎
361
21 Aug 2025
SI Units
pardouin
🥈
497
20 Aug 2025
SI Units
edsrzf
💎
493
20 Aug 2025
SI Units
edsrzf
💎
465
17 Aug 2025
SI Units
edsrzf
💎
291
16 Aug 2025
SI Units
acollett89
751
8 Aug 2025
SI Units
5cw
345
5 Aug 2025
SI Units
FlorianCassayre
514
5 Aug 2025
SI Units
targrik
🥉
612
5 Aug 2025
SI Units
albanian-laundromat
324
4 Aug 2025
SI Units
trinityy-7
606
23 Jul 2025
SI Units
edsrzf
🥈
504
20 Jul 2025
SI Units
MeWhenI
💎
903
19 Jul 2025
SI Units
MeWhenI
653
19 Jul 2025
SI Units
MeWhenI
715
19 Jul 2025
SI Units
MeWhenI
💎
651
19 Jul 2025
SI Units
MeWhenI
672
19 Jul 2025
SI Units
MeWhenI
639
19 Jul 2025
SI Units
MeWhenI
🥈
680
19 Jul 2025
SI Units
mossiegoat
417
17 Jul 2025
SI Units
bitsandbeyond
💎
199
15 Jul 2025
SI Units
ndren
311
11 Jul 2025
SI Units
Flekay
691
11 Jul 2025
SI Units
gigaprofisi
703
10 Jul 2025
SI Units
JDiLenarda
🥈
770
3 Jul 2025
SI Units
dokutan
1,026
2 Jul 2025
SI Units
albanian-laundromat
💎
403
29 Jun 2025
SI Units
Natanaelel
🥉
744
28 Jun 2025
SI Units
namelessiw
🥈
455
25 Jun 2025
SI Units
ovs-code
391
22 Jun 2025
SI Units
MeWhenI
💎
1,039
20 Jun 2025
SI Units
edsrzf
💎
538
19 Jun 2025
SI Units
emgordon154
🥉
895
10 Jun 2025
SI Units
edsrzf
🥈
582
8 Jun 2025
SI Units
edsrzf
💎
474
7 Jun 2025
SI Units
ryyyn
510
4 Jun 2025
SI Units
stefangimmillaro
🥈
824
4 Jun 2025
SI Units
SirBogman
💎
615
3 Jun 2025
SI Units
KatieLG
577
1 Jun 2025
SI Units
error256
🥈
509
31 May 2025
SI Units
TheZwierzLF
629
29 May 2025