The
Minesweeper
hole will go live in approximately
5 days
. Why not try and solve it ahead of time?
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Golfers
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12 Days of Christmas
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99 Bottles of Beer
Abundant Numbers
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brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
CSS Colors
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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
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Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
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ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
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
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
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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
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
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Minesweeper
CaedenHarper
132
20ms
43 mins ago
Minesweeper
sean-niemann
118
22ms
63 mins ago
Minesweeper
rucin93
107
12ms
8 hours ago
Game of Life
edsrzf
107
13ms
10 hours ago
Musical Chords
emgordon154
199
11ms
10 hours ago
Ellipse Perimeters
stefangimmillaro
72
10ms
16 hours ago
Tongue-twisters
CornerMercury
313
32ms
19 hours ago
Day of Week
snoozingnewt
75
42ms
25 hours ago
Odious Numbers (Long)
snoozingnewt
45
10ms
27 hours ago
Odious Numbers
snoozingnewt
44
9ms
27 hours ago
Evil Numbers (Long)
snoozingnewt
46
9ms
27 hours ago
Evil Numbers
snoozingnewt
44
9ms
27 hours ago
Abundant Numbers (Long)
tigerdan2
55
11ms
33 hours ago
Set
iczelia
247
11ms
33 hours ago
Tic-tac-toe
iczelia
159
18ms
34 hours ago
Repeating Decimals
iczelia
204
10ms
34 hours ago
Arabic to Roman
zekestephens
159
22ms
41 hours ago
Trinomial Triangle
JayXon
💎
65
9ms
43 hours ago
Poker
iczelia
605
11ms
47 hours ago
Diamonds
EzraYoungren
185
10ms
2 days ago
Diamonds
Spovis
363
10ms
2 days ago
Diamonds
isneace
274
10ms
2 days ago
Diamonds
bremersj
134
9ms
2 days ago
Diamonds
GabeRedBalloon
225
9ms
2 days ago
N Queens
KasperKivimaeki
135
10ms
2 days ago
Evil Numbers
levinwinter
51
9ms
2 days ago
Evil Numbers
SunHao-0
66
10ms
2 days ago
Evil Numbers
Laellekoenig
59
8ms
2 days ago
Catalan Numbers
Laellekoenig
61
10ms
2 days ago
Game of Life
duckyluuk
107
11ms
2 days ago
Divisors
Laellekoenig
67
10ms
2 days ago
Polyominoes
iczelia
2,012
19ms
2 days ago
Kaprekar Numbers
iczelia
447
9ms
2 days ago
Kolakoski Sequence
iczelia
92
11ms
2 days ago
Hilbert Curve
iczelia
5,125
10ms
2 days ago
CSS Colors
stephanie-flower
3,167
11ms
2 days ago
12 Days of Christmas
luweiCN
851
10ms
2 days ago
Morse Encoder
iczelia
628
11ms
3 days ago
Lucky Tickets
iczelia
158
14ms
3 days ago
Inventory Sequence
iczelia
66
11ms
3 days ago
Tutorial
deanacus
69
11ms
3 days ago
Jacobi Symbol
iczelia
305
10ms
3 days ago
Forsyth–Edwards Notation
iczelia
157
11ms
3 days ago
Fizz Buzz
luuumine
59
9ms
3 days ago
Set
sean-niemann
121
19ms
4 days ago
Trinomial Triangle
sean-niemann
70
9ms
4 days ago
ASCII Table
iczelia
281
12ms
4 days ago
Leap Years
Laellekoenig
46
9ms
4 days ago
SI Units
rucin93
518
14ms
4 days ago
Mandelbrot
LukeBridges
10,010
12ms
4 days ago
Hilbert Curve
LukeBridges
5,124
17ms
4 days ago
Collatz
levinwinter
60
11ms
4 days ago
Collatz
Laellekoenig
57
11ms
4 days ago
Fibonacci
Babafaba
40
9ms
4 days ago
Fizz Buzz
Babafaba
🥇
56
10ms
4 days ago
Fibonacci
luuumine
🥇
33
11ms
4 days ago
Leap Years
luuumine
43
10ms
4 days ago
SI Units
sean-niemann
639
10ms
4 days ago
Trinomial Triangle
rucin93
69
9ms
4 days ago
Trinomial Triangle
emplv
69
9ms
4 days ago
Catalan Numbers
Babafaba
47
9ms
4 days ago
Trinomial Triangle
edsrzf
🥈
67
11ms
4 days ago
ISBN
levinwinter
79
9ms
5 days ago
𝑒
Nemikolh
51
24ms
5 days ago
Partition Numbers
xyangst
653
8ms
5 days ago
Ascending Primes
xyangst
203
9ms
5 days ago
Collatz
BrunoVisnadi
57
11ms
5 days ago
π
Nemikolh
63
19ms
5 days ago
Hilbert Curve
jared-hughes
276
12ms
5 days ago
Ellipse Perimeters
sean-niemann
61
5 days ago
Farey Sequence
madeforlosers
77
10ms
6 days ago
Lucky Numbers
madeforlosers
118
16ms
6 days ago
Look and Say
madeforlosers
69
10ms
6 days ago
Leap Years
madeforlosers
57
9ms
6 days ago
Emirp Numbers (Long)
madeforlosers
96
1,467ms
6 days ago