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Minesweeper
hole will go live in approximately
16 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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Fractions
Game of Life
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Number Spiral
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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
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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
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
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p-adic Expansion
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D
Dart
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F#
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Forth
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Janet
Java
JavaScript
jq
Julia
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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
Chars
Time
Submitted
Set
snoozingnewt
417
92ms
9 hours ago
Mandelbrot
snoozingnewt
🥈
330
623ms
12 hours ago
Tutorial
Openstreetmapler
150
4ms
13 hours ago
Tower of Hanoi
albanian-laundromat
101
5ms
26 hours ago
Tower of Hanoi
Shanethegamer
3,583
3ms
29 hours ago
Kolakoski Sequence
snoozingnewt
131
4ms
30 hours ago
Catalan Numbers
snoozingnewt
84
4ms
32 hours ago
Game of Life
edsrzf
💎
154
22ms
2 days ago
Minesweeper
edsrzf
163
124ms
3 days ago
Trinomial Triangle
dokutan
792
3ms
6 days ago
Transpose Sentence
dokutan
🥉
108
69ms
6 days ago
Prime Numbers
dokutan
68
5ms
6 days ago
Pernicious Numbers (Long)
dokutan
100
38ms
6 days ago
Odious Numbers (Long)
dokutan
76
6ms
6 days ago
Niven Numbers (Long)
dokutan
71
20ms
6 days ago
Niven Numbers
dokutan
70
3ms
6 days ago
Leap Years
dokutan
67
4ms
6 days ago
Fractions
dokutan
117
5ms
6 days ago
Foo Fizz Buzz Bar
dokutan
131
10ms
6 days ago
Evil Numbers (Long)
dokutan
82
6ms
6 days ago
Divisors
dokutan
81
8ms
6 days ago
Day of Week
dokutan
142
8ms
6 days ago
Collatz
dokutan
83
80ms
6 days ago
Arabic to Roman
dokutan
112
22ms
6 days ago
Abundant Numbers (Long)
dokutan
85
434ms
6 days ago
Abundant Numbers
dokutan
85
22ms
6 days ago
ASCII Table
edsrzf
💎
96
3ms
7 days ago
Tongue-twisters
snoozingnewt
🥉
216
3ms
7 days ago
Pernicious Numbers
snoozingnewt
38
3ms
8 days ago
Prime Numbers
iczelia
84
5ms
11 days ago
Topological Sort
iczelia
🥈
575
22ms
11 days ago
DFA Simulator
snoozingnewt
🥉
442
6ms
13 days ago
Foo Fizz Buzz Bar
snoozingnewt
162
5ms
14 days ago
λ
snoozingnewt
489
3ms
14 days ago
Hilbert Curve
snoozingnewt
💎
492
3ms
14 days ago
Tutorial
luuumine
150
5ms
14 days ago
Tutorial
Babafaba
150
4ms
15 days ago
Farey Sequence
snoozingnewt
184
6ms
16 days ago
Smith Numbers
snoozingnewt
276
164ms
17 days ago
Van Eck Sequence
snoozingnewt
134
5ms
17 days ago
Inventory Sequence
snoozingnewt
122
5ms
17 days ago
Fibonacci
snoozingnewt
98
3ms
20 days ago
Arithmetic Numbers
snoozingnewt
127
4,410ms
21 days ago
Abundant Numbers
snoozingnewt
114
7ms
21 days ago
Abundant Numbers (Long)
snoozingnewt
115
75ms
21 days ago
Pernicious Numbers
Yax42
65
3ms
26 days ago
Intersection
snoozingnewt
175
4ms
2 Oct 2025
Fibonacci
jacekwladzinski
68
3ms
2 Oct 2025
Partition Numbers
albanian-laundromat
249
43ms
2 Oct 2025
Leap Years
albanian-laundromat
69
5ms
2 Oct 2025
Fibonacci
albanian-laundromat
71
3ms
2 Oct 2025
Pascal’s Triangle
snoozingnewt
220
3ms
1 Oct 2025
Trinomial Triangle
edsrzf
💎
77
4ms
1 Oct 2025
Pascal’s Triangle
edsrzf
🥈
63
4ms
1 Oct 2025
Trinomial Triangle
DialFrost
🥈
80
4ms
1 Oct 2025
Trinomial Triangle
snoozingnewt
🥉
245
3ms
1 Oct 2025
Trinomial Triangle
blaztoma
347
5ms
30 Sep 2025
Divisors
snoozingnewt
112
4ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
2,073
3ms
30 Sep 2025
Niven Numbers (Long)
snoozingnewt
101
24ms
30 Sep 2025
Niven Numbers
snoozingnewt
73
4ms
30 Sep 2025
Prime Numbers
snoozingnewt
90
11ms
28 Sep 2025
Emirp Numbers (Long)
snoozingnewt
205
60ms
28 Sep 2025
Emirp Numbers
snoozingnewt
204
16ms
28 Sep 2025
Prime Numbers (Long)
snoozingnewt
123
1,943ms
28 Sep 2025
Levenshtein Distance
BREMAUCY
1,201
4ms
27 Sep 2025
Levenshtein Distance
InigoK
517
1,025ms
26 Sep 2025
Leap Years
snoozingnewt
68
5ms
26 Sep 2025
Recamán
snoozingnewt
179
4ms
24 Sep 2025
Mahjong
dokutan
🥈
2,472
21ms
23 Sep 2025
Pangram Grep
snoozingnewt
93
3ms
23 Sep 2025
Rijndael S-box
snoozingnewt
419
3ms
23 Sep 2025
Collatz
snoozingnewt
90
15ms
23 Sep 2025
Partition Numbers
snoozingnewt
🥈
125
5ms
23 Sep 2025
Fizz Buzz
snoozingnewt
68
3ms
23 Sep 2025