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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
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
><>
ALGOL 68
ArkScript
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
APL
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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Sudoku
jusaka
441
9ms
7 hours ago
Sudoku
RobertHoeh
1,044
2,780ms
7 hours ago
Sudoku
vang1ong7ang
535
261ms
2 days ago
Sudoku
StefanHabel
369
54ms
3 days ago
Sudoku
snoozingnewt
💎
494
144ms
3 days ago
Sudoku
madex
508
3ms
5 days ago
Sudoku
kmathis22
537
511ms
5 days ago
Sudoku
jusaka
387
48ms
8 days ago
Sudoku
edsrzf
🥈
755
64ms
8 days ago
Sudoku
madeforlosers
289
32ms
10 days ago
Sudoku
aksyristos
387
42ms
14 days ago
Sudoku
MeWhenI
💎
445
169ms
14 days ago
Sudoku
prestosilver
🥉
586
396ms
16 days ago
Sudoku
janAkali
804
653ms
18 days ago
Sudoku
blaztoma
329
44ms
26 days ago
Sudoku
snoozingnewt
215
525ms
27 days ago
Sudoku
snoozingnewt
219
42ms
27 days ago
Sudoku
Flekay
387
41ms
10 Mar 2026
Sudoku
Steffan153
195
483ms
26 Feb 2026
Sudoku
ovs-code
💎
239
42ms
23 Feb 2026
Sudoku
bitsandbeyond
💎
146
1,533ms
23 Feb 2026
Sudoku
canissimia
💎
257
1,548ms
23 Feb 2026
Sudoku
JOrE20
546
31ms
21 Feb 2026
Sudoku
JOrE20
🥉
1,486
5ms
21 Feb 2026
Sudoku
JOrE20
🥈
1,020
177ms
21 Feb 2026
Sudoku
aksyristos
781
2ms
20 Feb 2026
Sudoku
Steffan153
💎
165
3,264ms
19 Feb 2026
Sudoku
JOrE20
🥉
936
71ms
19 Feb 2026
Sudoku
JOrE20
301
16ms
19 Feb 2026
Sudoku
edsrzf
🥈
170
3,545ms
19 Feb 2026
Sudoku
Steffan153
🥈
139
71ms
18 Feb 2026
Sudoku
JOrE20
🥈
1,105
60ms
17 Feb 2026
Sudoku
dokutan
400
630ms
14 Feb 2026
Sudoku
dokutan
409
107ms
8 Feb 2026
Sudoku
elgan65536
653
278ms
7 Feb 2026
Sudoku
blaztoma
🥈
509
142ms
27 Jan 2026
Sudoku
amazingalek
1,170
464ms
24 Jan 2026
Sudoku
ovs-code
🥉
276
3,456ms
24 Jan 2026
Sudoku
zhaohm14
435
49ms
16 Jan 2026
Sudoku
MiffOttah
623
440ms
9 Jan 2026
Sudoku
dokutan
944
62ms
27 Dec 2025
Sudoku
dokutan
💎
461
29ms
27 Dec 2025
Sudoku
emgordon154
341
36ms
26 Dec 2025
Sudoku
acotis
🥈
459
252ms
24 Dec 2025
Sudoku
kurkale6ka
841
18ms
15 Dec 2025
Sudoku
CornerMercury
213
39ms
14 Dec 2025
Sudoku
ryyyn
362
3,623ms
3 Dec 2025
Sudoku
alexsave
805
19ms
3 Dec 2025
Sudoku
dokutan
401
31ms
3 Dec 2025
Sudoku
Lv0Sys
436
15ms
2 Dec 2025
Sudoku
Lv0Sys
546
22ms
2 Dec 2025
Sudoku
h3ra993huskp
774
692ms
30 Nov 2025
Sudoku
snoozingnewt
💎
342
247ms
22 Nov 2025
Sudoku
KatieLG
🥉
617
534ms
21 Nov 2025
Sudoku
snoozingnewt
🥉
612
148ms
21 Nov 2025
Sudoku
targrik
🥉
515
78ms
19 Nov 2025
Sudoku
KasperKivimaeki
🥉
396
3,079ms
18 Nov 2025
Sudoku
Yax42
475
522ms
16 Nov 2025
Sudoku
MeWhenI
🥈
469
1,068ms
7 Nov 2025
Sudoku
albanian-laundromat
🥉
244
4,183ms
7 Nov 2025
Sudoku
lynn
🥉
484
234ms
6 Nov 2025
Sudoku
Natanaelel
382
11ms
5 Nov 2025
Sudoku
CaedenHarper
808
356ms
4 Nov 2025
Sudoku
robin-scragg
735
15ms
1 Nov 2025
Sudoku
CaedenHarper
440
1,154ms
31 Oct 2025
Sudoku
CaedenHarper
456
66ms
31 Oct 2025
Sudoku
Babafaba
372
3,627ms
26 Oct 2025
Sudoku
Babafaba
376
297ms
26 Oct 2025
Sudoku
CaedenHarper
964
498ms
21 Oct 2025
Sudoku
albanian-laundromat
🦄
663
1,666ms
18 Oct 2025
Sudoku
CaedenHarper
989
707ms
8 Oct 2025
Sudoku
KatieLG
291
546ms
6 Oct 2025
Sudoku
BREMAUCY
553
27ms
4 Oct 2025
Sudoku
pardouin
152
79ms
3 Oct 2025
Sudoku
bzijlema
399
766ms
2 Oct 2025
Sudoku
CaedenHarper
501
4,486ms
27 Sep 2025
Sudoku
JayXon
💎
385
653ms
27 Sep 2025
Sudoku
sean-niemann
🥉
475
813ms
24 Sep 2025
Sudoku
KatieLG
648
171ms
24 Sep 2025
Sudoku
AlexKent3141
892
3ms
17 Sep 2025