The
Minesweeper
hole will go live in approximately
30 hours
. Why not try and solve it ahead of time?
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Golfers
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12 Days of Christmas
24 Game
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
Inventory Sequence
ISBN
Jacobi Symbol
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Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
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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
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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
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Perl
PHP
PowerShell
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Python
R
Raku
Rockstar
Ruby
Rust
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sed
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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
duckyluuk
95
8ms
4 hours ago
Tower of Hanoi
albanian-laundromat
100
9ms
13 hours ago
Tower of Hanoi
Shanethegamer
3,582
4ms
15 hours ago
Minesweeper
duckyluuk
109
178ms
2 days ago
Minesweeper
albanian-laundromat
165
163ms
4 days ago
Odious Numbers
Babafaba
80
3ms
5 days ago
Tutorial
luuumine
129
8ms
14 days ago
Tutorial
Babafaba
129
6ms
14 days ago
Trinomial Triangle
dokutan
🥉
2,072
4ms
15 days ago
Pascal’s Triangle
duckyluuk
78
15ms
16 days ago
Trinomial Triangle
duckyluuk
💎
107
11ms
17 days ago
Leap Years
dokutan
110
27ms
24 days ago
Abundant Numbers (Long)
dokutan
122
4,143ms
24 days ago
Abundant Numbers
dokutan
121
133ms
24 days ago
Foo Fizz Buzz Bar
dokutan
199
547ms
24 days ago
Fizz Buzz
dokutan
142
10ms
24 days ago
Collatz
dokutan
95
137ms
24 days ago
Prime Numbers (Long)
dokutan
100
4,547ms
24 days ago
Odious Numbers (Long)
dokutan
107
25ms
24 days ago
Evil Numbers (Long)
dokutan
106
26ms
24 days ago
Emojify
dokutan
547
17ms
25 days ago
Niven Numbers (Long)
dokutan
113
89ms
25 days ago
Pascal’s Triangle
albanian-laundromat
107
7ms
26 days ago
Divisors
dokutan
90
20ms
27 days ago
Pascal’s Triangle
dokutan
76
7ms
27 days ago
Trinomial Triangle
albanian-laundromat
🥈
139
8ms
1 Oct 2025
Hexagonal Spiral
KatieLG
1,140
4ms
30 Sep 2025
Sphenic Numbers
KatieLG
8,865
7ms
30 Sep 2025
Semiprime Numbers
KatieLG
12,794
6ms
30 Sep 2025
Polygon Triangulations
KatieLG
4,317
6ms
30 Sep 2025
Odd Polyomino Tiling
KatieLG
21,436
11ms
30 Sep 2025
Highly Composite Numbers
KatieLG
397
4ms
30 Sep 2025
Mandelbrot
KatieLG
10,009
4ms
30 Sep 2025
Hilbert Curve
KatieLG
🥈
5,123
4ms
30 Sep 2025
Trinomial Triangle
KatieLG
🥉
2,072
5ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
🥉
2,072
4ms
30 Sep 2025
Topological Sort
albanian-laundromat
🦄
145
821ms
25 Sep 2025
Niven Numbers
albanian-laundromat
60
6ms
24 Sep 2025
Catalan Numbers
dokutan
🥉
2,833
9ms
22 Sep 2025
Leyland Numbers
GolfingSuccess
🥉
133
188ms
21 Sep 2025
Tutorial
snoozingnewt
53
6ms
15 Sep 2025
Emirp Numbers (Long)
albanian-laundromat
160
3,216ms
12 Sep 2025
Emirp Numbers
albanian-laundromat
88
4ms
12 Sep 2025
Arithmetic Numbers
albanian-laundromat
133
855ms
12 Sep 2025
λ
albanian-laundromat
💎
564
6ms
12 Sep 2025
γ
albanian-laundromat
💎
565
5ms
12 Sep 2025
Factorial Factorisation
albanian-laundromat
157
744ms
12 Sep 2025
Pangram Grep
albanian-laundromat
83
2,155ms
12 Sep 2025
Zeckendorf Representation
albanian-laundromat
109
35ms
12 Sep 2025
Foo Fizz Buzz Bar
albanian-laundromat
128
16ms
12 Sep 2025
Fizz Buzz
albanian-laundromat
81
8ms
12 Sep 2025
Prime Numbers
albanian-laundromat
63
12ms
12 Sep 2025
Leap Years
albanian-laundromat
56
8ms
12 Sep 2025
Happy Numbers
GolfingSuccess
68
5ms
11 Sep 2025
Happy Numbers (Long)
GolfingSuccess
88
21ms
11 Sep 2025
Niven Numbers (Long)
GolfingSuccess
🥇
59
36ms
11 Sep 2025
Niven Numbers
GolfingSuccess
🥇
57
7ms
11 Sep 2025
Inventory Sequence
blaztoma
8,622
53ms
4 Sep 2025
Hilbert Curve
dokutan
💎
1,057
14ms
28 Aug 2025
Hilbert Curve
CaedenHarper
🥈
5,123
4ms
28 Aug 2025
Fibonacci
CaedenHarper
40
5ms
26 Aug 2025
Tutorial
Vexxter9
129
9ms
21 Aug 2025
λ
gigaprofisi
1,008
4ms
18 Aug 2025
Emirp Numbers (Long)
DialFrost
💎
99
923ms
17 Aug 2025
Mandelbrot
CaedenHarper
10,009
5ms
16 Aug 2025
Partition Numbers
CaedenHarper
🥉
652
4ms
16 Aug 2025
Sierpiński Triangle
CaedenHarper
559
4ms
16 Aug 2025
Van Eck Sequence
CaedenHarper
2,560
4ms
16 Aug 2025
Vampire Numbers
CaedenHarper
1,076
6ms
16 Aug 2025
Smith Numbers
CaedenHarper
1,829
4ms
16 Aug 2025
Rule 110
CaedenHarper
15,857
6ms
16 Aug 2025
Recamán
CaedenHarper
902
4ms
16 Aug 2025
Polyominoes
CaedenHarper
3,569
4ms
16 Aug 2025
Pernicious Numbers (Long)
CaedenHarper
20,667
8ms
16 Aug 2025
Pernicious Numbers
CaedenHarper
105
3ms
16 Aug 2025