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
Sudoku (Fill-in)
alexsave
931
19ms
2 days ago
Sudoku (Fill-in)
plcc0
248
31ms
13 days ago
Sudoku (Fill-in)
tomh1012
387
468ms
13 days ago
Sudoku (Fill-in)
JOrE20
613
12ms
16 days ago
Sudoku (Fill-in)
TheZwierzLF
460
341ms
17 days ago
Sudoku (Fill-in)
blaztoma
💎
262
156ms
24 days ago
Sudoku (Fill-in)
dokutan
724
1,285ms
26 days ago
Sudoku (Fill-in)
dokutan
724
17ms
26 days ago
Sudoku (Fill-in)
TheZwierzLF
554
46ms
25 Dec 2025
Sudoku (Fill-in)
acotis
🥉
323
239ms
24 Dec 2025
Sudoku (Fill-in)
canissimia
💎
120
3,127ms
22 Dec 2025
Sudoku (Fill-in)
KatieLG
3,238
844ms
21 Dec 2025
Sudoku (Fill-in)
canissimia
💎
113
86ms
19 Dec 2025
Sudoku (Fill-in)
canissimia
💎
162
2,013ms
19 Dec 2025
Sudoku (Fill-in)
kmathis22
978
527ms
18 Dec 2025
Sudoku (Fill-in)
snoozingnewt
🥈
343
153ms
18 Dec 2025
Sudoku (Fill-in)
blaztoma
244
32ms
17 Dec 2025
Sudoku (Fill-in)
blaztoma
173
70ms
17 Dec 2025
Sudoku (Fill-in)
bzijlema
178
51ms
16 Dec 2025
Sudoku (Fill-in)
blaztoma
276
16ms
13 Dec 2025
Sudoku (Fill-in)
blaztoma
🥈
454
26ms
13 Dec 2025
Sudoku (Fill-in)
blaztoma
🥉
312
11ms
13 Dec 2025
Sudoku (Fill-in)
MeWhenI
196
333ms
12 Dec 2025
Sudoku (Fill-in)
blaztoma
🥉
508
490ms
10 Dec 2025
Sudoku (Fill-in)
kg583
🥈
334
407ms
10 Dec 2025
Sudoku (Fill-in)
Lv0Sys
527
39ms
5 Dec 2025
Sudoku (Fill-in)
Lv0Sys
691
17ms
5 Dec 2025
Sudoku (Fill-in)
Lv0Sys
679
15ms
4 Dec 2025
Sudoku (Fill-in)
emgordon154
💎
228
2,560ms
4 Dec 2025
Sudoku (Fill-in)
snoozingnewt
263
834ms
1 Dec 2025
Sudoku (Fill-in)
snoozingnewt
271
53ms
1 Dec 2025
Sudoku (Fill-in)
CornerMercury
238
43ms
1 Dec 2025
Sudoku (Fill-in)
h3ra993huskp
1,111
904ms
30 Nov 2025
Sudoku (Fill-in)
AidanWalter
2,614
25ms
28 Nov 2025
Sudoku (Fill-in)
ndren
343
49ms
26 Nov 2025
Sudoku (Fill-in)
bitsandbeyond
💎
178
786ms
23 Nov 2025
Sudoku (Fill-in)
snoozingnewt
380
224ms
23 Nov 2025
Sudoku (Fill-in)
snoozingnewt
🥉
258
120ms
21 Nov 2025
Sudoku (Fill-in)
snoozingnewt
326
723ms
20 Nov 2025
Sudoku (Fill-in)
CaedenHarper
546
293ms
20 Nov 2025
Sudoku (Fill-in)
Yax42
276
472ms
17 Nov 2025
Sudoku (Fill-in)
albanian-laundromat
🥈
250
2,960ms
17 Nov 2025
Sudoku (Fill-in)
albanian-laundromat
💎
373
4,653ms
15 Nov 2025
Sudoku (Fill-in)
edsrzf
💎
244
1,089ms
10 Nov 2025
Sudoku (Fill-in)
MeWhenI
🥉
614
3,271ms
7 Nov 2025
Sudoku (Fill-in)
MeWhenI
🥈
228
850ms
7 Nov 2025
Sudoku (Fill-in)
Natanaelel
187
15ms
5 Nov 2025
Sudoku (Fill-in)
gigaprofisi
1,612
28ms
4 Nov 2025
Sudoku (Fill-in)
ryyyn
174
309ms
1 Nov 2025
Sudoku (Fill-in)
Jacob385
1,547
559ms
28 Oct 2025
Sudoku (Fill-in)
Babafaba
396
1,177ms
26 Oct 2025
Sudoku (Fill-in)
Babafaba
413
337ms
26 Oct 2025
Sudoku (Fill-in)
JayXon
💎
165
846ms
22 Oct 2025
Sudoku (Fill-in)
sean-niemann
🥈
166
4,219ms
22 Oct 2025
Sudoku (Fill-in)
CaedenHarper
686
489ms
21 Oct 2025
Sudoku (Fill-in)
albanian-laundromat
235
33ms
19 Oct 2025
Sudoku (Fill-in)
albanian-laundromat
229
742ms
19 Oct 2025
Sudoku (Fill-in)
albanian-laundromat
🦄
396
4,002ms
18 Oct 2025
Sudoku (Fill-in)
CaedenHarper
719
666ms
9 Oct 2025
Sudoku (Fill-in)
edsrzf
🥈
277
320ms
7 Oct 2025
Sudoku (Fill-in)
edsrzf
💎
183
4,251ms
6 Oct 2025
Sudoku (Fill-in)
emgordon154
💎
140
2,151ms
6 Oct 2025
Sudoku (Fill-in)
stefangimmillaro
264
671ms
6 Oct 2025
Sudoku (Fill-in)
JayXon
💎
185
576ms
4 Oct 2025
Sudoku (Fill-in)
BREMAUCY
327
34ms
4 Oct 2025
Sudoku (Fill-in)
emgordon154
💎
151
1,836ms
3 Oct 2025
Sudoku (Fill-in)
edsrzf
🥈
187
100ms
3 Oct 2025
Sudoku (Fill-in)
edsrzf
253
805ms
3 Oct 2025
Sudoku (Fill-in)
pardouin
138
265ms
3 Oct 2025
Sudoku (Fill-in)
edsrzf
💎
236
395ms
3 Oct 2025
Sudoku (Fill-in)
edsrzf
💎
287
4,527ms
3 Oct 2025
Sudoku (Fill-in)
edsrzf
💎
361
58ms
3 Oct 2025
Sudoku (Fill-in)
emgordon154
192
1,886ms
2 Oct 2025
Sudoku (Fill-in)
emgordon154
141
2,462ms
2 Oct 2025
Sudoku (Fill-in)
emgordon154
176
4,204ms
2 Oct 2025
Sudoku (Fill-in)
emgordon154
190
1,027ms
2 Oct 2025
Sudoku (Fill-in)
jerrandolph
724
277ms
1 Oct 2025
Sudoku (Fill-in)
edsrzf
💎
226
425ms
30 Sep 2025
Sudoku (Fill-in)
edsrzf
💎
204
3,360ms
29 Sep 2025
Sudoku (Fill-in)
JayXon
💎
220
1,108ms
27 Sep 2025