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
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
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
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
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
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
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
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
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
Sudoku (Fill-in)
blaztoma
265
44ms
23 hours ago
Sudoku (Fill-in)
Lv0Sys
691
17ms
5 days ago
Sudoku (Fill-in)
dokutan
852
30ms
7 days ago
Sudoku (Fill-in)
snoozingnewt
271
53ms
8 days ago
Sudoku (Fill-in)
CornerMercury
238
43ms
9 days ago
Sudoku (Fill-in)
AidanWalter
2,614
25ms
12 days ago
Sudoku (Fill-in)
ndren
343
49ms
14 days ago
Sudoku (Fill-in)
ryyyn
174
1,563ms
1 Nov 2025
Sudoku (Fill-in)
Babafaba
413
337ms
26 Oct 2025
Sudoku (Fill-in)
albanian-laundromat
235
33ms
19 Oct 2025
Sudoku (Fill-in)
BREMAUCY
327
34ms
4 Oct 2025
Sudoku (Fill-in)
emgordon154
192
3,733ms
2 Oct 2025
Sudoku (Fill-in)
qpwoeirut
287
68ms
21 Sep 2025
Sudoku (Fill-in)
InigoK
297
567ms
18 Sep 2025
Sudoku (Fill-in)
CaedenHarper
310
53ms
15 Sep 2025
Sudoku (Fill-in)
cros107
215
186ms
8 Sep 2025
Sudoku (Fill-in)
HumanoidCPU
782
12ms
6 Sep 2025
Sudoku (Fill-in)
sean-niemann
189
39ms
26 Aug 2025
Sudoku (Fill-in)
Zhenyu-Bo
2,240
17ms
1 Aug 2025
Sudoku (Fill-in)
anter69
276
137ms
10 Jul 2025
Sudoku (Fill-in)
plcc0
287
61ms
22 Apr 2025
Sudoku (Fill-in)
evan18c
3,386
23ms
18 Apr 2025
Sudoku (Fill-in)
Keegan-T
1,457
12ms
18 Apr 2025
Sudoku (Fill-in)
mbittner20
610
157ms
14 Apr 2025
Sudoku (Fill-in)
madex
405
31ms
21 Mar 2025
Sudoku (Fill-in)
zt14427
4,693
17ms
18 Mar 2025
Sudoku (Fill-in)
jameswmccarty
1,521
22ms
13 Mar 2025
Sudoku (Fill-in)
ahmetdemirag
245
45ms
4 Mar 2025
Sudoku (Fill-in)
ovs-code
170
167ms
9 Feb 2025
Sudoku (Fill-in)
ComputerKWasTaken
1,007
17ms
23 Jan 2025
Sudoku (Fill-in)
croc54
358
79ms
18 Jan 2025
Sudoku (Fill-in)
theadamabrams
784
81ms
28 Nov 2024
Sudoku (Fill-in)
wh3n3v3r
430
79ms
18 Nov 2024
Sudoku (Fill-in)
lifthrasiir
240
104ms
16 Nov 2024
Sudoku (Fill-in)
Natanaelel
240
15ms
11 Nov 2024
Sudoku (Fill-in)
xyangst
760
14ms
12 Oct 2024
Sudoku (Fill-in)
JesseNoEyes
1,298
20ms
20 Sep 2024
Sudoku (Fill-in)
jatloe
193
298ms
16 Sep 2024
Sudoku (Fill-in)
Rubiksmath
188
129ms
2 Sep 2024
Sudoku (Fill-in)
kg583
225
208ms
9 Jun 2024
Sudoku (Fill-in)
pardouin
170
48ms
9 Jun 2024
Sudoku (Fill-in)
Yewzir
1,084
4,892ms
1 Jun 2024
Sudoku (Fill-in)
jtaxen
3,085
24ms
10 May 2024
Sudoku (Fill-in)
Steffan153
183
42ms
4 Apr 2024
Sudoku (Fill-in)
AlephSquirrel
316
51ms
30 Mar 2024
Sudoku (Fill-in)
duckyluuk
230
115ms
22 Mar 2024
Sudoku (Fill-in)
davecame
269
236ms
20 Mar 2024
Sudoku (Fill-in)
5cw
🥉
164
951ms
11 Mar 2024
Sudoku (Fill-in)
mathisfun271
470
22ms
6 Mar 2024
Sudoku (Fill-in)
DialFrost
221
267ms
14 Feb 2024
Sudoku (Fill-in)
rsgray
468
316ms
7 Feb 2024
Sudoku (Fill-in)
neel11235813
294
64ms
12 Jan 2024
Sudoku (Fill-in)
yuchuehw
769
18ms
9 Jan 2024
Sudoku (Fill-in)
commandblockguy
358
22ms
31 Oct 2023
Sudoku (Fill-in)
StefanHabel
297
157ms
4 Sep 2023
Sudoku (Fill-in)
SB-945
277
70ms
31 Aug 2023
Sudoku (Fill-in)
stefangimmillaro
217
190ms
17 Aug 2023
Sudoku (Fill-in)
FortuiteMan
357
500ms
6 Aug 2023
Sudoku (Fill-in)
bizy-coder
188
173ms
4 Aug 2023
Sudoku (Fill-in)
AlexanderFair
270
49ms
31 Jul 2023
Sudoku (Fill-in)
msbranicky
746
18ms
26 Jul 2023
Sudoku (Fill-in)
janbehrens
443
396ms
17 Jun 2023
Sudoku (Fill-in)
TaserTheFox
428
2,274ms
23 May 2023
Sudoku (Fill-in)
eiburns
441
47ms
10 May 2023
Sudoku (Fill-in)
adamnielson42
263
45ms
25 Apr 2023
Sudoku (Fill-in)
galloj
634
31ms
24 Feb 2023
Sudoku (Fill-in)
aksyristos
782
66ms
27 Jan 2023
Sudoku (Fill-in)
scpchicken
300
99ms
7 Jan 2023
Sudoku (Fill-in)
prplz
225
177ms
6 Jan 2023
Sudoku (Fill-in)
za3k
1,109
26ms
14 Dec 2022
Sudoku (Fill-in)
QuincyNash
591
4,111ms
4 Dec 2022
Sudoku (Fill-in)
jakobkordez
306
75ms
2 Nov 2022
Sudoku (Fill-in)
bricknellj
178
38ms
2 Nov 2022
Sudoku (Fill-in)
MeWhenI
198
3,339ms
25 Oct 2022
Sudoku (Fill-in)
ValentinCassayre
620
812ms
19 Oct 2022