The
Minesweeper
hole will go live in approximately
26 hours
. Why not try and solve it ahead of time?
Recent Solutions
Golfers
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Arabic to Roman
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Arrows
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brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
CSS Colors
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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
Hilbert Curve
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
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
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
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Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
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
Chars
Time
Submitted
Mandelbrot
snoozingnewt
280
32ms
2 hours ago
Tutorial
Openstreetmapler
222
27ms
3 hours ago
Minesweeper
albanian-laundromat
266
57ms
7 hours ago
Tower of Hanoi
albanian-laundromat
141
26ms
17 hours ago
Kolakoski Sequence
snoozingnewt
202
26ms
21 hours ago
United States
Babafaba
1,430
29ms
21 hours ago
Hexdump
albanian-laundromat
🥉
461
26ms
4 days ago
Odious Numbers (Long)
snoozingnewt
100
25ms
5 days ago
Odious Numbers
snoozingnewt
99
24ms
5 days ago
Evil Numbers (Long)
snoozingnewt
96
24ms
5 days ago
Evil Numbers
snoozingnewt
94
25ms
5 days ago
Trinomial Triangle
dokutan
1,113
113ms
5 days ago
Pascal’s Triangle
Babafaba
148
26ms
6 days ago
Pernicious Numbers
snoozingnewt
70
26ms
8 days ago
United States
msbranicky
883
118ms
9 days ago
Niven Numbers
snoozingnewt
82
38ms
10 days ago
Fibonacci
snoozingnewt
85
26ms
11 days ago
Divisors
snoozingnewt
104
28ms
11 days ago
Roman to Arabic
snoozingnewt
🥇
76
70ms
11 days ago
Fizz Buzz
snoozingnewt
167
28ms
13 days ago
Polyominoes
snoozingnewt
🥉
1,199
30ms
13 days ago
Prime Numbers (Long)
snoozingnewt
124
218ms
13 days ago
Foo Fizz Buzz Bar
snoozingnewt
225
29ms
14 days ago
Hilbert Curve
snoozingnewt
🥈
679
28ms
14 days ago
Tutorial
luuumine
222
36ms
14 days ago
Happy Numbers (Long)
snoozingnewt
187
27ms
14 days ago
Tutorial
Babafaba
222
27ms
14 days ago
Farey Sequence
snoozingnewt
170
26ms
15 days ago
Smith Numbers
snoozingnewt
🥉
274
137ms
16 days ago
Van Eck Sequence
snoozingnewt
149
35ms
17 days ago
United States
Schmitt-Very-Cool
766
90ms
17 days ago
Fizz Buzz
h3ra993huskp
172
27ms
17 days ago
Emirp Numbers (Long)
snoozingnewt
366
28ms
17 days ago
United States
BREMAUCY
545
39ms
18 days ago
United States
blaztoma
1,086
39ms
18 days ago
United States
CaedenHarper
1,726
42ms
19 days ago
United States
retrohun
2,127
31ms
19 days ago
United States
snoozingnewt
1,144
87ms
19 days ago
Odious Numbers
Babafaba
72
27ms
19 days ago
Pascal’s Triangle
kmathis22
143
26ms
20 days ago
Arithmetic Numbers
snoozingnewt
148
209ms
20 days ago
Abundant Numbers
snoozingnewt
120
26ms
20 days ago
Abundant Numbers (Long)
snoozingnewt
121
28ms
20 days ago
Game of Life
albanian-laundromat
🥈
228
25ms
21 days ago
Collatz
snoozingnewt
155
25ms
22 days ago
Musical Chords
albanian-laundromat
🥈
388
71ms
24 days ago
Pascal’s Triangle
albanian-laundromat
144
27ms
25 days ago
Trinomial Triangle
emplv
🥈
150
27ms
25 days ago
Trinomial Triangle
edsrzf
💎
149
419ms
25 days ago
Trinomial Triangle
albanian-laundromat
🥉
151
31ms
26 days ago
Pernicious Numbers
Yax42
76
29ms
26 days ago
Star Wars GPT
m-tkach
💎
435
64ms
2 Oct 2025
Star Wars GPT
albanian-laundromat
🥈
438
75ms
2 Oct 2025
Leap Years
albanian-laundromat
85
38ms
2 Oct 2025
Abundant Numbers
albanian-laundromat
114
40ms
2 Oct 2025
Arithmetic Numbers
albanian-laundromat
140
218ms
2 Oct 2025
Fibonacci
albanian-laundromat
69
26ms
2 Oct 2025
Abundant Numbers (Long)
albanian-laundromat
114
29ms
2 Oct 2025
Pascal’s Triangle
snoozingnewt
188
29ms
1 Oct 2025
Trinomial Triangle
blaztoma
200
28ms
30 Sep 2025
Trinomial Triangle
snoozingnewt
176
28ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
2,142
30ms
30 Sep 2025
Niven Numbers (Long)
snoozingnewt
143
32ms
30 Sep 2025
Hilbert Curve
blaztoma
🥉
820
38ms
29 Sep 2025
Prime Numbers
snoozingnewt
132
29ms
28 Sep 2025
Emirp Numbers
snoozingnewt
365
27ms
26 Sep 2025
Recamán
snoozingnewt
340
64ms
24 Sep 2025
Niven Numbers
albanian-laundromat
🥈
76
29ms
24 Sep 2025
Collatz
kmathis22
147
28ms
24 Sep 2025
Catalan Numbers
dokutan
1,459
127ms
23 Sep 2025
Partition Numbers
snoozingnewt
🥈
148
26ms
23 Sep 2025
ROT13
blaztoma
196
31ms
21 Sep 2025
Pascal’s Triangle
InigoK
230
32ms
21 Sep 2025
Tutorial
snoozingnewt
107
37ms
15 Sep 2025
Happy Numbers
snoozingnewt
198
27ms
13 Sep 2025