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
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
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
Calendar
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
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
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
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
Calendar
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
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Reversi
guilhem-roy
212
2,200ms
29 hours ago
Reversi
snoozingnewt
🥉
200
83ms
29 hours ago
Reversi
snoozingnewt
168
767ms
29 hours ago
Reversi
snoozingnewt
169
23ms
29 hours ago
Reversi
snoozingnewt
252
111ms
3 days ago
Reversi
CaedenHarper
327
255ms
3 days ago
Reversi
albanian-laundromat
176
1,087ms
6 days ago
Reversi
albanian-laundromat
177
60ms
6 days ago
Reversi
stefangabos
313
13ms
6 days ago
Reversi
albanian-laundromat
🥉
110
1,470ms
7 days ago
Reversi
tomh1012
384
399ms
11 days ago
Reversi
stefangimmillaro
124
55ms
11 days ago
Reversi
edsrzf
191
473ms
13 days ago
Reversi
blaztoma
256
28ms
14 days ago
Reversi
MeWhenI
💎
250
1,623ms
16 days ago
Reversi
MeWhenI
170
471ms
16 days ago
Reversi
ryyyn
123
18ms
18 days ago
Reversi
Babafaba
345
19ms
18 days ago
Reversi
edsrzf
💎
116
5ms
19 days ago
Reversi
sean-niemann
🥈
132
127ms
20 days ago
Reversi
gigaprofisi
308
14ms
22 days ago
Reversi
kg583
💎
197
955ms
22 days ago
Reversi
Babafaba
337
931ms
24 days ago
Reversi
iczelia
499
12ms
23 Oct 2025
Reversi
namelessiw
🥉
174
346ms
22 Oct 2025
Reversi
aiwana
238
42ms
22 Oct 2025
Reversi
CaedenHarper
309
368ms
21 Oct 2025
Reversi
Yax42
261
402ms
16 Oct 2025
Reversi
namelessiw
208
405ms
16 Oct 2025
Reversi
Yax42
245
141ms
7 Oct 2025
Reversi
Yax42
421
162ms
7 Oct 2025
Reversi
CaedenHarper
343
406ms
7 Oct 2025
Reversi
stefangimmillaro
174
405ms
6 Oct 2025
Reversi
aksyristos
852
13ms
5 Oct 2025
Reversi
qpwoeirut
171
22ms
1 Oct 2025
Reversi
CaedenHarper
237
1,280ms
30 Sep 2025
Reversi
jerrandolph
363
255ms
29 Sep 2025
Reversi
JayXon
🥉
160
400ms
28 Sep 2025
Reversi
CaedenHarper
249
12ms
25 Sep 2025
Reversi
nwellnhof
162
411ms
25 Sep 2025
Reversi
CaedenHarper
253
1,067ms
25 Sep 2025
Reversi
CaedenHarper
263
26ms
25 Sep 2025
Reversi
sean-niemann
🥈
158
407ms
24 Sep 2025
Reversi
error256
💎
148
406ms
24 Sep 2025
Reversi
dokutan
290
400ms
24 Sep 2025
Reversi
Shanethegamer
231
398ms
24 Sep 2025
Reversi
mousetail
183
2ms
23 Sep 2025
Reversi
mousetail
💎
218
159ms
23 Sep 2025
Reversi
InigoK
205
22ms
22 Sep 2025
Reversi
mousetail
230
23ms
22 Sep 2025
Reversi
albanian-laundromat
🥈
463
16ms
18 Sep 2025
Reversi
albanian-laundromat
💎
207
7ms
16 Sep 2025
Reversi
kg583
142
9ms
15 Sep 2025
Reversi
MeWhenI
145
924ms
15 Sep 2025
Reversi
error256
119
763ms
13 Sep 2025
Reversi
sean-niemann
🥈
96
795ms
13 Sep 2025
Reversi
AdrienHache
💎
150
383ms
12 Sep 2025
Reversi
Yax42
🥈
153
394ms
11 Sep 2025
Reversi
Yax42
147
23ms
10 Sep 2025
Reversi
edsrzf
💎
175
733ms
10 Sep 2025
Reversi
kg583
🥈
176
1,088ms
9 Sep 2025
Reversi
edsrzf
144
164ms
9 Sep 2025
Reversi
edsrzf
💎
119
7ms
9 Sep 2025
Reversi
edsrzf
93
1,087ms
9 Sep 2025
Reversi
edsrzf
126
16ms
9 Sep 2025
Reversi
edsrzf
💎
94
776ms
9 Sep 2025
Reversi
edsrzf
🥇
106
9ms
9 Sep 2025
Reversi
edsrzf
🥇
113
2,546ms
9 Sep 2025
Reversi
edsrzf
🥇
130
13ms
9 Sep 2025
Reversi
KasperKivimaeki
189
4ms
3 Sep 2025
Reversi
commandblockguy
147
569ms
1 Sep 2025
Reversi
dokutan
256
802ms
30 Aug 2025
Reversi
annaproxy
192
197ms
28 Aug 2025
Reversi
annaproxy
🥉
177
27ms
28 Aug 2025
Reversi
trinityy-7
135
22ms
25 Aug 2025