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
Rijndael S-box
Andrey2001
364
20ms
43 hours ago
Rijndael S-box
kasarino
597
10ms
45 hours ago
Rijndael S-box
JOrE20
650
10ms
6 days ago
Rijndael S-box
SectorCorruptor
780
12ms
7 days ago
Rijndael S-box
Languag3
190
14ms
18 days ago
Rijndael S-box
plcc0
226
54ms
26 days ago
Rijndael S-box
sisyphus-ppcg
155
582ms
16 Dec 2025
Rijndael S-box
YAJUE114514
266
380ms
14 Dec 2025
Rijndael S-box
ryyyn
160
34ms
10 Dec 2025
Rijndael S-box
edsrzf
141
13ms
9 Dec 2025
Rijndael S-box
kellantech
781
13ms
9 Dec 2025
Rijndael S-box
Lv0Sys
187
11ms
8 Dec 2025
Rijndael S-box
TheZwierzLF
244
11ms
7 Dec 2025
Rijndael S-box
CommandLeo
570
11ms
1 Dec 2025
Rijndael S-box
vhoulbreque
249
30ms
30 Nov 2025
Rijndael S-box
FortuiteMan
187
10ms
27 Nov 2025
Rijndael S-box
CornerMercury
172
57ms
25 Nov 2025
Rijndael S-box
Carlos-EAC
791
10ms
24 Nov 2025
Rijndael S-box
luuumine
237
18ms
21 Nov 2025
Rijndael S-box
blaztoma
170
46ms
13 Nov 2025
Rijndael S-box
HumanoidCPU
572
10ms
12 Nov 2025
Rijndael S-box
cros107
229
11ms
11 Nov 2025
Rijndael S-box
jacekwladzinski
780
10ms
8 Nov 2025
Rijndael S-box
snoozingnewt
188
24ms
3 Nov 2025
Rijndael S-box
Babafaba
242
25ms
30 Oct 2025
Rijndael S-box
LostSyntax21
363
35ms
23 Oct 2025
Rijndael S-box
robin-scragg
479
537ms
23 Oct 2025
Rijndael S-box
ndren
170
18ms
9 Oct 2025
Rijndael S-box
Emutis
420
16ms
5 Oct 2025
Rijndael S-box
emgordon154
204
41ms
22 Sep 2025
Rijndael S-box
qpwoeirut
239
45ms
19 Sep 2025
Rijndael S-box
Matter1024
780
10ms
11 Sep 2025
Rijndael S-box
InigoK
202
156ms
10 Sep 2025
Rijndael S-box
SB-945
240
51ms
10 Sep 2025
Rijndael S-box
dokutan
220
10ms
9 Sep 2025
Rijndael S-box
cthierfelder
780
11ms
3 Sep 2025
Rijndael S-box
BREMAUCY
217
129ms
24 Aug 2025
Rijndael S-box
andrewjc2000
210
101ms
14 Aug 2025
Rijndael S-box
CaedenHarper
193
163ms
14 Aug 2025
Rijndael S-box
Unknownuserfrommars
780
10ms
5 Aug 2025
Rijndael S-box
RaBa21
344
20ms
1 Aug 2025
Rijndael S-box
Zhenyu-Bo
1,354
12ms
1 Aug 2025
Rijndael S-box
duckyluuk
208
3,108ms
30 Jul 2025
Rijndael S-box
xiaoyiming123
780
9ms
24 Jul 2025
Rijndael S-box
klixel
204
3,442ms
20 Jul 2025
Rijndael S-box
5cw
148
460ms
17 Jul 2025
Rijndael S-box
Flekay
263
10ms
11 Jul 2025
Rijndael S-box
damoose717
780
10ms
25 May 2025
Rijndael S-box
madeforlosers
780
10ms
9 May 2025
Rijndael S-box
albanian-laundromat
214
152ms
6 May 2025
Rijndael S-box
0dyse
608
10ms
29 Apr 2025
Rijndael S-box
bricknellj
159
156ms
23 Apr 2025
Rijndael S-box
moustave
559
10ms
26 Mar 2025
Rijndael S-box
ehulinsky
781
10ms
26 Mar 2025
Rijndael S-box
commandz0
223
40ms
23 Mar 2025
Rijndael S-box
ovs-code
🥈
137
35ms
17 Mar 2025
Rijndael S-box
liam824css
1,757
11ms
2 Mar 2025
Rijndael S-box
ahmetdemirag
237
112ms
19 Feb 2025
Rijndael S-box
hiichbindermax
273
10ms
13 Feb 2025
Rijndael S-box
sean-niemann
144
14ms
5 Feb 2025
Rijndael S-box
croc54
254
51ms
30 Jan 2025
Rijndael S-box
JunkIce
780
12ms
19 Jan 2025
Rijndael S-box
AidanWalter
1,706
16ms
2 Jan 2025
Rijndael S-box
jameswmccarty
698
11ms
14 Dec 2024
Rijndael S-box
lifthrasiir
144
16ms
20 Nov 2024
Rijndael S-box
wh3n3v3r
230
120ms
18 Nov 2024
Rijndael S-box
StinkAndShityAura
249
11ms
17 Nov 2024
Rijndael S-box
bizy-coder
142
19ms
29 Oct 2024
Rijndael S-box
JayXon
141
23ms
29 Oct 2024
Rijndael S-box
WillConker
603
10ms
22 Oct 2024
Rijndael S-box
DialFrost
219
114ms
11 Oct 2024
Rijndael S-box
RedzGoose
780
10ms
7 Oct 2024
Rijndael S-box
Stockoh
474
12ms
30 Sep 2024
Rijndael S-box
Mabeloid
242
11ms
17 Sep 2024
Rijndael S-box
hellwue
311
18ms
10 Sep 2024
Rijndael S-box
Ralac07
780
9ms
4 Sep 2024
Rijndael S-box
Mathrew2012
780
10ms
15 Aug 2024
Rijndael S-box
codingisgreatbutiamnot
780
9ms
20 Jul 2024
Rijndael S-box
mbittner20
259
11ms
17 Jul 2024
Rijndael S-box
ComputerKWasTaken
1,363
12ms
11 Jul 2024