The
Minesweeper
hole will go live in approximately
9 hours
. 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
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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
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Intersection
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ISBN
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ln 2
Look and Say
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Mahjong
Mandelbrot
Maze
Medal Tally
Morse Decoder
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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
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Snake
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Assembly
AWK
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brainfuck
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C#
C++
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COBOL
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Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
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Go
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Groovy
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Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
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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
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Tower of Hanoi
bitsandbeyond
136
10ms
3 hours ago
Set
snoozingnewt
385
58ms
16 hours ago
Tutorial
Openstreetmapler
179
22ms
20 hours ago
Tower of Hanoi
Shanethegamer
3,588
10ms
36 hours ago
Kolakoski Sequence
snoozingnewt
283
26ms
37 hours ago
Catalan Numbers
snoozingnewt
110
11ms
39 hours ago
Minesweeper
IanUtley
170
54ms
2 days ago
Odious Numbers
Babafaba
84
9ms
6 days ago
Pernicious Numbers
snoozingnewt
47
9ms
10 days ago
DFA Simulator
snoozingnewt
958
29ms
13 days ago
Foo Fizz Buzz Bar
snoozingnewt
279
12ms
14 days ago
Tutorial
luuumine
179
31ms
15 days ago
Tutorial
Babafaba
179
29ms
15 days ago
Trinomial Triangle
dokutan
2,078
10ms
15 days ago
Trinomial Triangle
IanUtley
🥈
158
116ms
16 days ago
Farey Sequence
snoozingnewt
163
10ms
16 days ago
Smith Numbers
snoozingnewt
252
4,424ms
17 days ago
Van Eck Sequence
snoozingnewt
127
12ms
17 days ago
Inventory Sequence
snoozingnewt
259
65ms
17 days ago
Arithmetic Numbers
snoozingnewt
114
4,576ms
21 days ago
Trinomial Triangle
error256
💎
90
10ms
23 days ago
Rock-paper-scissors-Spock-lizard
IanUtley
💎
219
21ms
24 days ago
Tutorial
SirBogman
74
32ms
24 days ago
United States
SirBogman
211
34ms
24 days ago
Jacobi Symbol
SirBogman
192
131ms
24 days ago
Levenshtein Distance
SirBogman
249
423ms
24 days ago
Rock-paper-scissors-Spock-lizard
SirBogman
258
158ms
24 days ago
Musical Chords
SirBogman
💎
248
34ms
24 days ago
Pernicious Numbers
Yax42
84
14ms
27 days ago
Collatz
kmathis22
119
28ms
27 days ago
Intersection
snoozingnewt
291
20ms
2 Oct 2025
Fibonacci
jacekwladzinski
76
9ms
2 Oct 2025
Trinomial Triangle
snoozingnewt
🥉
255
17ms
1 Oct 2025
Divisors
snoozingnewt
75
10ms
30 Sep 2025
Niven Numbers
snoozingnewt
56
10ms
30 Sep 2025
Evil Numbers (Long)
snoozingnewt
50
9ms
30 Sep 2025
Evil Numbers
snoozingnewt
48
9ms
30 Sep 2025
Odious Numbers
snoozingnewt
48
8ms
30 Sep 2025
Odious Numbers (Long)
snoozingnewt
49
9ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
2,078
12ms
30 Sep 2025
Niven Numbers (Long)
snoozingnewt
109
136ms
30 Sep 2025
Prime Numbers
snoozingnewt
99
10ms
28 Sep 2025
Prime Numbers (Long)
snoozingnewt
101
651ms
28 Sep 2025
Partition Numbers
annaproxy
155
13ms
22 Sep 2025
Gijswijt’s Sequence
annaproxy
🥉
134
3,444ms
22 Sep 2025
Rock-paper-scissors-Spock-lizard
dokutan
1,204
47ms
16 Sep 2025
CSS Colors
dokutan
5,879
119ms
16 Sep 2025
Morse Decoder
dokutan
1,353
47ms
16 Sep 2025
Morse Encoder
dokutan
1,664
46ms
16 Sep 2025
United States
dokutan
1,758
55ms
16 Sep 2025
Tutorial
snoozingnewt
74
29ms
15 Sep 2025
Quine
snoozingnewt
2,716
16ms
13 Sep 2025
Quine
dokutan
🥇
38
9ms
12 Sep 2025
24 Game
annaproxy
🥉
216
2,059ms
8 Sep 2025
Hilbert Curve
annaproxy
💎
416
24ms
8 Sep 2025
Hilbert Curve
IanUtley
🥈
430
93ms
8 Sep 2025
Quine
fuzzylojik-golf
🥇
38
10ms
7 Sep 2025
Topological Sort
IanUtley
💎
148
143ms
6 Sep 2025
Factorial Factorisation
annaproxy
🥉
132
40ms
5 Sep 2025
Topological Sort
annaproxy
🥈
149
42ms
5 Sep 2025
Inventory Sequence
blaztoma
257
14ms
2 Sep 2025
Levenshtein Distance
blaztoma
534
20ms
2 Sep 2025
Time Distance
annaproxy
🥉
252
23ms
31 Aug 2025
Zeckendorf Representation
annaproxy
118
26ms
31 Aug 2025
ROT13
annaproxy
116
44ms
29 Aug 2025
Hilbert Curve
dokutan
🥉
1,007
40ms
28 Aug 2025
Hilbert Curve
CaedenHarper
5,129
10ms
28 Aug 2025
Mandelbrot
annaproxy
🥉
167
473ms
28 Aug 2025
Reversi
annaproxy
🥉
177
27ms
28 Aug 2025
Scrambled Sort
annaproxy
🥈
171
44ms
26 Aug 2025
Roman to Arabic
CaedenHarper
379
37ms
22 Aug 2025
Tutorial
Vexxter9
179
31ms
21 Aug 2025
Intersection
Mikey-Beep
184
17ms
17 Aug 2025
Mandelbrot
CaedenHarper
10,015
9ms
16 Aug 2025
Partition Numbers
CaedenHarper
658
9ms
16 Aug 2025