The
Minesweeper
hole will go live in approximately
29 hours
. Why not try and solve it ahead of time?
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brainfuck
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Emojify
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Factorial Factorisation
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Foo Fizz Buzz Bar
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Game of Life
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ln 2
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Medal Tally
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Number Spiral
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Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
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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
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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
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
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Gray Code Encoder
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Highly Composite Numbers
Minesweeper
NFA Simulator
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p-adic Expansion
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AWK
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D
Dart
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Forth
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J
Janet
Java
JavaScript
jq
Julia
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Raku
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sed
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V
VimL
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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
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Tutorial
Openstreetmapler
179
3ms
21 mins ago
Tower of Hanoi
albanian-laundromat
109
3ms
15 hours ago
Tower of Hanoi
Shanethegamer
3,592
2ms
16 hours ago
Kolakoski Sequence
sean-niemann
🥇
73
3ms
17 hours ago
Kolakoski Sequence
snoozingnewt
114
6ms
17 hours ago
Minesweeper
albanian-laundromat
149
186ms
34 hours ago
Minesweeper
edsrzf
147
337ms
35 hours ago
Polyominoes
albanian-laundromat
🥈
360
509ms
2 days ago
Game of Life
albanian-laundromat
🥉
167
54ms
2 days ago
Roman to Arabic
CaedenHarper
129
7ms
3 days ago
12 Days of Christmas
albanian-laundromat
464
3ms
4 days ago
Tutorial
albanian-laundromat
87
3ms
4 days ago
Ellipse Perimeters
Shanethegamer
160
3ms
4 days ago
Odious Numbers (Long)
snoozingnewt
62
2ms
5 days ago
Odious Numbers
snoozingnewt
61
2ms
5 days ago
Evil Numbers
snoozingnewt
61
2ms
5 days ago
Evil Numbers (Long)
snoozingnewt
63
2ms
5 days ago
Poker
albanian-laundromat
🥈
457
3ms
5 days ago
Trinomial Triangle
edsrzf
🥈
90
3ms
6 days ago
Trinomial Triangle
JayXon
💎
89
3ms
6 days ago
Topological Sort
edsrzf
🥈
218
4,334ms
6 days ago
Tongue-twisters
snoozingnewt
335
3ms
6 days ago
Calendar
albanian-laundromat
425
5ms
7 days ago
Floyd-Steinberg Dithering
albanian-laundromat
404
51ms
7 days ago
Repeating Decimals
albanian-laundromat
🥇
292
8ms
7 days ago
Kolakoski Sequence
albanian-laundromat
77
11ms
7 days ago
N Queens
albanian-laundromat
🥈
150
29ms
7 days ago
Pernicious Numbers
snoozingnewt
🥇
42
2ms
9 days ago
Star Wars Opening Crawl
albanian-laundromat
🥈
510
11ms
9 days ago
Recamán
albanian-laundromat
78
3ms
10 days ago
Smith Numbers
sean-niemann
🥈
156
1,548ms
11 days ago
Fibonacci
snoozingnewt
59
2ms
11 days ago
Hilbert Curve
snoozingnewt
🥇
537
9ms
12 days ago
Foo Fizz Buzz Bar
snoozingnewt
119
3ms
13 days ago
Tutorial
luuumine
179
4ms
14 days ago
Pangram Grep
duckyluuk
171
3ms
14 days ago
Tutorial
Babafaba
179
4ms
14 days ago
Leap Years
Yax42
66
3ms
15 days ago
Farey Sequence
snoozingnewt
167
4ms
15 days ago
Van Eck Sequence
snoozingnewt
99
3ms
16 days ago
Inventory Sequence
snoozingnewt
97
2ms
17 days ago
Leyland Numbers
snoozingnewt
114
4ms
17 days ago
Quine
snoozingnewt
287
2ms
18 days ago
Odious Numbers
Babafaba
48
2ms
19 days ago
Arithmetic Numbers
snoozingnewt
101
708ms
20 days ago
Abundant Numbers
snoozingnewt
80
3ms
20 days ago
Abundant Numbers (Long)
snoozingnewt
80
17ms
20 days ago
Fizz Buzz
snoozingnewt
75
3ms
23 days ago
Medal Tally
albanian-laundromat
🥈
203
3ms
23 days ago
Divisors
Yax42
151
3ms
24 days ago
Trinomial Triangle
dokutan
2,082
2ms
24 days ago
Farey Sequence
albanian-laundromat
99
4ms
25 days ago
Prime Numbers (Long)
snoozingnewt
🥇
54
289ms
25 days ago
Prime Numbers
snoozingnewt
53
2ms
25 days ago
Trinomial Triangle
albanian-laundromat
🥉
111
3ms
25 days ago
Pernicious Numbers
Yax42
44
3ms
26 days ago
Gray Code Decoder
kg583
100
6ms
26 days ago
Trinomial Triangle
snoozingnewt
138
3ms
1 Oct 2025
Trinomial Triangle
blaztoma
344
3ms
30 Sep 2025
Divisors
snoozingnewt
62
3ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
2,082
2ms
30 Sep 2025
Niven Numbers (Long)
snoozingnewt
87
11ms
30 Sep 2025
Niven Numbers
snoozingnewt
58
2ms
30 Sep 2025
Sphenic Numbers
LostSyntax21
186
11ms
29 Sep 2025
Sphenic Numbers
albanian-laundromat
80
3,905ms
29 Sep 2025
Quine
CaedenHarper
257
2ms
28 Sep 2025
Emirp Numbers
snoozingnewt
236
9ms
28 Sep 2025
Emirp Numbers (Long)
snoozingnewt
233
36ms
28 Sep 2025
Pernicious Numbers (Long)
snoozingnewt
102
13ms
28 Sep 2025
Levenshtein Distance
InigoK
314
495ms
26 Sep 2025
Ascending Primes
albanian-laundromat
🥉
116
2,016ms
26 Sep 2025
Divisors
albanian-laundromat
🥇
61
4ms
26 Sep 2025
Collatz
kmathis22
106
6ms
25 Sep 2025
Musical Chords
albanian-laundromat
🥉
300
4ms
25 Sep 2025
Recamán
snoozingnewt
92
2ms
24 Sep 2025