The
Minesweeper
hole will go live in approximately
3 days
. Why not try and solve it ahead of time?
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Abundant Numbers
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brainfuck
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Emirp Numbers (Long)
Emojify
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Evil Numbers (Long)
Factorial Factorisation
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Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
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Happy Numbers
Happy Numbers (Long)
Hexdump
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Intersection
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Leap Years
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ln 2
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Maze
Medal Tally
Morse Decoder
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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
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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
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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
Niven Numbers (Long)
frankgraziano
217
1,346ms
46 hours ago
Minesweeper
albanian-laundromat
627
20ms
2 days ago
Prime Numbers
Babafaba
111
11ms
3 days ago
Niven Numbers
Babafaba
131
11ms
3 days ago
Happy Numbers
Babafaba
147
12ms
3 days ago
Odious Numbers
Babafaba
113
11ms
3 days ago
Vampire Numbers
frankgraziano
🥉
1,108
12ms
3 days ago
Gijswijt’s Sequence
frankgraziano
🥉
323
172ms
5 days ago
Levenshtein Distance
frankgraziano
🥈
634
16ms
6 days ago
Day of Week
frankgraziano
🥈
403
28ms
7 days ago
99 Bottles of Beer
frankgraziano
🥉
476
19ms
10 days ago
λ
albanian-laundromat
🥉
751
14ms
11 days ago
γ
albanian-laundromat
🥈
747
16ms
11 days ago
Niven Numbers (Long)
albanian-laundromat
264
70ms
11 days ago
Card Number Validation
albanian-laundromat
343
51ms
11 days ago
Tutorial
luuumine
386
21ms
12 days ago
Trinomial Triangle
frankgraziano
🥈
362
13ms
12 days ago
Tutorial
Babafaba
386
23ms
12 days ago
Happy Numbers (Long)
frankgraziano
🥈
242
41ms
12 days ago
Hilbert Curve
frankgraziano
🥈
5,155
15ms
12 days ago
Recamán
frankgraziano
🥈
211
13ms
12 days ago
Collatz
frankgraziano
🥈
198
139ms
13 days ago
Roman to Arabic
frankgraziano
🥈
289
120ms
14 days ago
Partition Numbers
frankgraziano
🥈
234
15ms
15 days ago
Pascal’s Triangle
frankgraziano
🥉
207
15ms
15 days ago
Partition Numbers
albanian-laundromat
🥉
279
20ms
19 days ago
Prime Numbers (Long)
albanian-laundromat
258
3,890ms
19 days ago
Look and Say
albanian-laundromat
391
16ms
20 days ago
Maze
albanian-laundromat
🥈
475
53ms
20 days ago
Divisors
albanian-laundromat
250
13ms
20 days ago
Factorial Factorisation
albanian-laundromat
🥈
459
83ms
20 days ago
Prime Numbers (Long)
frankgraziano
🥉
192
314ms
20 days ago
Fibonacci
snoozingnewt
174
11ms
20 days ago
Look and Say
frankgraziano
🥈
339
23ms
20 days ago
Trinomial Triangle
dokutan
2,107
12ms
21 days ago
Prime Numbers (Long)
snoozingnewt
691
58ms
21 days ago
Prime Numbers
snoozingnewt
589
13ms
21 days ago
Collatz
albanian-laundromat
234
137ms
23 days ago
Tutorial
CaedenHarper
186
19ms
26 days ago
Trinomial Triangle
albanian-laundromat
💎
289
13ms
27 days ago
Trinomial Triangle
blaztoma
🥉
721
13ms
27 days ago
Van Eck Sequence
frankgraziano
🥈
245
21ms
27 days ago
Trinomial Triangle
CaedenHarper
2,232
12ms
27 days ago
Arithmetic Numbers
frankgraziano
💎
252
1,596ms
29 Sep 2025
Tutorial
KatieLG
362
18ms
27 Sep 2025
Pascal’s Triangle
albanian-laundromat
281
11ms
27 Sep 2025
Game of Life
albanian-laundromat
🥈
438
12ms
27 Sep 2025
Inventory Sequence
albanian-laundromat
205
14ms
26 Sep 2025
Leap Years
snoozingnewt
231
14ms
26 Sep 2025
Quine
albanian-laundromat
249
11ms
19 Sep 2025
Lucky Numbers
albanian-laundromat
348
3,395ms
18 Sep 2025
Abundant Numbers (Long)
albanian-laundromat
254
91ms
18 Sep 2025
Recamán
albanian-laundromat
🥉
229
12ms
18 Sep 2025
Pangram Grep
albanian-laundromat
🥉
336
16ms
18 Sep 2025
ISBN
albanian-laundromat
379
17ms
18 Sep 2025
Van Eck Sequence
albanian-laundromat
🥉
248
15ms
18 Sep 2025
Happy Numbers (Long)
albanian-laundromat
307
19ms
18 Sep 2025
Fibonacci
albanian-laundromat
152
12ms
18 Sep 2025
Farey Sequence
albanian-laundromat
276
19ms
18 Sep 2025
Arithmetic Numbers
albanian-laundromat
339
1,118ms
18 Sep 2025
Scrambled Sort
albanian-laundromat
🥉
811
20ms
18 Sep 2025
Tic-tac-toe
albanian-laundromat
🥈
399
20ms
18 Sep 2025
SI Units
albanian-laundromat
🥈
1,376
33ms
18 Sep 2025
Set
albanian-laundromat
🥈
554
209ms
18 Sep 2025
Reversi
albanian-laundromat
🥈
463
19ms
18 Sep 2025
PalindromemordnilaP
albanian-laundromat
🥉
352
16ms
18 Sep 2025
Hexdump
albanian-laundromat
🥈
638
19ms
18 Sep 2025
Catalan Numbers
albanian-laundromat
🥈
597
26ms
18 Sep 2025
Tutorial
snoozingnewt
186
16ms
15 Sep 2025
Topological Sort
primo-ppcg
💎
388
191ms
13 Sep 2025
99 Bottles of Beer
albanian-laundromat
480
17ms
10 Sep 2025
Intersection
albanian-laundromat
🥈
476
14ms
8 Sep 2025
Billiards
albanian-laundromat
🥈
615
37ms
8 Sep 2025
Topological Sort
albanian-laundromat
🥈
572
48ms
8 Sep 2025
Kaprekar Numbers
albanian-laundromat
🥈
480
12ms
8 Sep 2025