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
Reverse Polish Notation
TheZwierzLF
86
34ms
13 days ago
Reverse Polish Notation
lacrosse
59
38ms
20 days ago
Reverse Polish Notation
Lv0Sys
72
37ms
27 days ago
Reverse Polish Notation
akiratee
87
39ms
20 Oct 2025
Reverse Polish Notation
beirigo
61
40ms
17 Oct 2025
Reverse Polish Notation
CaedenHarper
82
42ms
13 Sep 2025
Reverse Polish Notation
pardouin
61
43ms
12 Sep 2025
Reverse Polish Notation
edsrzf
70
39ms
4 Sep 2025
Reverse Polish Notation
sean-niemann
🥇
54
40ms
3 Aug 2025
Reverse Polish Notation
xsot
61
39ms
23 Apr 2025
Reverse Polish Notation
tatzyr
59
37ms
24 Mar 2025
Reverse Polish Notation
DialFrost
77
35ms
25 Dec 2024
Reverse Polish Notation
emgordon154
72
38ms
20 Nov 2024
Reverse Polish Notation
Steffan153
🥇
54
42ms
20 Aug 2024
Reverse Polish Notation
m-tkach
74
39ms
25 Jun 2024
Reverse Polish Notation
truisseaux
338
39ms
12 Apr 2024
Reverse Polish Notation
Shanethegamer
60
39ms
12 Apr 2024
Reverse Polish Notation
anter69
71
39ms
2 Apr 2024
Reverse Polish Notation
SirBogman
58
39ms
10 Jan 2024
Reverse Polish Notation
olleicua
61
42ms
6 Jan 2024
Reverse Polish Notation
Natanaelel
62
36ms
9 Dec 2023
Reverse Polish Notation
rniii
61
43ms
15 Sep 2023
Reverse Polish Notation
annaproxy
89
39ms
14 Sep 2023
Reverse Polish Notation
JayXon
61
45ms
3 May 2023
Reverse Polish Notation
aksyristos
90
36ms
8 Feb 2023
Reverse Polish Notation
KatieLG-Transpiler
909
38ms
5 Jan 2023
Reverse Polish Notation
KL-Lru
62
40ms
29 Dec 2022
Reverse Polish Notation
jared-hughes
69
40ms
10 Sep 2022
Reverse Polish Notation
MeWhenI
55
69ms
22 Aug 2022
Reverse Polish Notation
shinh
59
40ms
21 Jun 2022
Reverse Polish Notation
nwellnhof
62
40ms
4 Jun 2022
Reverse Polish Notation
olivermrose
79
39ms
15 Apr 2022
Reverse Polish Notation
adoxography
68
40ms
20 Mar 2022
Reverse Polish Notation
radarek
🥇
54
41ms
26 Feb 2022
Reverse Polish Notation
janlelis
58
71ms
23 Feb 2022
Reverse Polish Notation
stefangimmillaro
57
39ms
18 Feb 2022
Reverse Polish Notation
sisyphus-ppcg
🥇
54
39ms
16 Feb 2022
Reverse Polish Notation
Lydxn
🥇
54
39ms
14 Feb 2022
Reverse Polish Notation
primo-ppcg
🥇
54
37ms
14 Feb 2022
Reverse Polish Notation
akshatj27
🥇
54
42ms
14 Feb 2022
Reverse Polish Notation
ovs-code
🥇
54
38ms
14 Feb 2022
Reverse Polish Notation
scpchicken
66
39ms
13 Feb 2022
Reverse Polish Notation
rucin93
104
37ms
13 Feb 2022
Reverse Polish Notation
GrayJoKing
64
40ms
13 Feb 2022
Reverse Polish Notation
ChiefChippy2
64
39ms
12 Feb 2022
Reverse Polish Notation
KatieLG
69
39ms
12 Feb 2022