The
Minesweeper
hole will go live in approximately
26 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
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Catalan’s Constant
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Emirp Numbers
Emirp Numbers (Long)
Emojify
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Evil Numbers (Long)
Factorial Factorisation
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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
Jacobi Symbol
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Kolakoski Constant
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Leap Years
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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
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QR Encoder
Quadratic Formula
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AWK
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brainfuck
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COBOL
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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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Nim
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Perl
PHP
PowerShell
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Python
R
Raku
Rockstar
Ruby
Rust
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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
Chars
Time
Submitted
Tower of Hanoi
Shanethegamer
3,582
3ms
19 hours ago
Tutorial
Babafaba
88
4ms
14 days ago
Fizz Buzz
snoozingnewt
43
3ms
20 days ago
Tutorial
retrohun
88
5ms
19 Sep 2025
Tutorial
snoozingnewt
38
3ms
15 Sep 2025
Fizz Buzz
CaedenHarper
43
4ms
28 Aug 2025
Tutorial
Vexxter9
88
4ms
21 Aug 2025
Highly Composite Numbers
HumanoidCPU
397
4ms
18 Aug 2025
Semiprime Numbers
HumanoidCPU
12,794
4ms
18 Aug 2025
Hilbert Curve
HumanoidCPU
2,053
3ms
18 Aug 2025
Abundant Numbers (Long)
HumanoidCPU
969
2ms
18 Aug 2025
Polyominoes
HumanoidCPU
3,569
3ms
18 Aug 2025
Recamán
HumanoidCPU
902
3ms
18 Aug 2025
Pascal’s Triangle
HumanoidCPU
774
3ms
18 Aug 2025
Kaprekar Numbers
HumanoidCPU
445
3ms
18 Aug 2025
Happy Numbers
HumanoidCPU
112
3ms
18 Aug 2025
Happy Numbers (Long)
HumanoidCPU
557
4ms
18 Aug 2025
Emirp Numbers (Long)
HumanoidCPU
1,161
3ms
18 Aug 2025
Catalan Numbers
HumanoidCPU
2,877
3ms
18 Aug 2025
Tongue-twisters
HumanoidCPU
528
3ms
18 Aug 2025
Van Eck Sequence
HumanoidCPU
2,560
3ms
17 Aug 2025
Abundant Numbers
HumanoidCPU
168
3ms
16 Aug 2025
Look and Say
HumanoidCPU
1,284
3ms
15 Aug 2025
Leyland Numbers
HumanoidCPU
891
3ms
15 Aug 2025
Farey Sequence
HumanoidCPU
4,359
3ms
15 Aug 2025
Diamonds
HumanoidCPU
1,108
4ms
14 Aug 2025
Niven Numbers
HumanoidCPU
96
3ms
14 Aug 2025
Lucky Numbers
HumanoidCPU
4,825
3ms
14 Aug 2025
Inventory Sequence
HumanoidCPU
2,628
3ms
14 Aug 2025
Gijswijt’s Sequence
HumanoidCPU
2,005
3ms
14 Aug 2025
Smith Numbers
HumanoidCPU
1,829
3ms
14 Aug 2025
Vampire Numbers
HumanoidCPU
1,076
3ms
14 Aug 2025
Arithmetic Numbers
HumanoidCPU
37,647
4ms
14 Aug 2025
Odious Numbers (Long)
HumanoidCPU
1,950
3ms
14 Aug 2025
Evil Numbers (Long)
HumanoidCPU
1,955
3ms
14 Aug 2025
N Queens
HumanoidCPU
1,251
3ms
14 Aug 2025
Pernicious Numbers (Long)
HumanoidCPU
20,667
4ms
14 Aug 2025
Divisors
HumanoidCPU
1,171
3ms
14 Aug 2025
Foo Fizz Buzz Bar
HumanoidCPU
5,724
3ms
14 Aug 2025
Prime Numbers (Long)
HumanoidCPU
5,953
3ms
14 Aug 2025
Niven Numbers (Long)
HumanoidCPU
7,443
3ms
14 Aug 2025
N Queens
ovs-code
51
2,831ms
12 Aug 2025
Odious Numbers
HumanoidCPU
78
3ms
11 Aug 2025
Evil Numbers
HumanoidCPU
75
3ms
10 Aug 2025
Trinomial Triangle
HumanoidCPU
2,072
4ms
6 Aug 2025
Rijndael S-box
HumanoidCPU
773
4ms
4 Aug 2025
Prime Numbers
HumanoidCPU
76
4ms
2 Aug 2025
Sierpiński Triangle
HumanoidCPU
397
5ms
2 Aug 2025
Hexdump
ovs-code
108
3ms
31 Jul 2025
Sphenic Numbers
HumanoidCPU
8,865
3ms
29 Jul 2025
π
Ralac07
1,008
3ms
28 Jul 2025
Ordinal Numbers
ovs-code
48
4ms
27 Jul 2025
Transpose Sentence
ovs-code
34
3ms
27 Jul 2025
Kaprekar Numbers
ovs-code
50
2,533ms
25 Jul 2025
√2
ovs-code
58
1,465ms
25 Jul 2025
φ
ovs-code
56
1,440ms
25 Jul 2025
ASCII Table
ovs-code
76
3ms
25 Jul 2025
Forsyth–Edwards Notation
ovs-code
66
3ms
25 Jul 2025
Leap Years
ovs-code
26
3ms
19 Jul 2025
Pascal’s Triangle
ovs-code
29
3ms
19 Jul 2025
Van Eck Sequence
ovs-code
23
6ms
19 Jul 2025
Pernicious Numbers (Long)
ovs-code
30
10ms
19 Jul 2025
Pernicious Numbers
ovs-code
24
3ms
19 Jul 2025
Emirp Numbers (Long)
ovs-code
40
1,766ms
19 Jul 2025
Emirp Numbers
ovs-code
39
124ms
19 Jul 2025
Vampire Numbers
ovs-code
43
1,268ms
19 Jul 2025
Look and Say
ovs-code
33
4ms
19 Jul 2025
Prime Numbers (Long)
ovs-code
20
425ms
19 Jul 2025
Prime Numbers
ovs-code
19
4ms
19 Jul 2025
Tutorial
LostSyntax21
40
4ms
19 Jul 2025
Foo Fizz Buzz Bar
LostSyntax21
5,724
4ms
19 Jul 2025
Recamán
ovs-code
33
3ms
17 Jul 2025
Leyland Numbers
ovs-code
24
3ms
17 Jul 2025
Mahjong
ovs-code
87
9ms
17 Jul 2025
Kolakoski Constant
ovs-code
45
205ms
17 Jul 2025