The
Minesweeper
hole will go live in approximately
22 hours
. Why not try and solve it ahead of time?
Recent Solutions
Golfers
Solutions
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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
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
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iogii
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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
Bytes
Time
Submitted
Arithmetic Numbers
HumanoidCPU
53,017
363ms
23 mins ago
Minesweeper
ovs-code
75
17ms
4 hours ago
Vampire Numbers
maweowo
393
3ms
11 hours ago
Tower of Hanoi
Shanethegamer
4,090
4ms
23 hours ago
Minesweeper
KatieLG
196
90ms
28 hours ago
Ascending Primes
HumanoidCPU
711
9ms
2 days ago
Fibonacci
aspiringLich
18
3ms
3 days ago
Rock-paper-scissors-Spock-lizard
aiwana
274
5ms
7 days ago
Reversi
aiwana
238
53ms
8 days ago
Topological Sort
aiwana
152
19ms
9 days ago
QR Decoder
aiwana
163
5ms
9 days ago
Mahjong
aiwana
338
28ms
9 days ago
Ellipse Perimeters
Shanethegamer
44
5ms
9 days ago
Collatz
HumanoidCPU
5,225
41ms
10 days ago
Lucky Tickets
aiwana
206
7ms
11 days ago
DFA Simulator
aiwana
248
17ms
11 days ago
CSS Colors (Inverse)
aiwana
2,082
21ms
12 days ago
Roman to Arabic
maweowo
62
28ms
13 days ago
CSS Colors
aiwana
840
13ms
14 days ago
Ellipse Perimeters
aiwana
67
4ms
14 days ago
φ
aiwana
246
85ms
14 days ago
Jacobi Symbol
aiwana
156
12ms
14 days ago
√2
aiwana
238
74ms
14 days ago
Mandelbrot
aiwana
236
373ms
14 days ago
γ
aiwana
755
8ms
14 days ago
Catalan’s Constant
aiwana
755
9ms
14 days ago
Highly Composite Numbers
aiwana
124
53ms
14 days ago
Apéry’s Constant
aiwana
755
9ms
14 days ago
ASCII Table
wleightond
136
3ms
14 days ago
Fizz Buzz
ndren
70
4ms
15 days ago
Tutorial
Babafaba
88
5ms
15 days ago
24 Game
ndren
571
695ms
16 days ago
Divisors
ndren
43
4ms
18 days ago
Card Number Validation
evnu
73
5ms
18 days ago
brainfuck
aiwana
544
105ms
18 days ago
99 Bottles of Beer
aiwana
285
8ms
19 days ago
Fractions
maweowo
68
5ms
20 days ago
Fizz Buzz
snoozingnewt
58
4ms
21 days ago
Fibonacci
CornerMercury
24
3ms
21 days ago
Forsyth–Edwards Notation
maweowo
100
7ms
22 days ago
Pascal’s Triangle
wleightond
30
4ms
22 days ago
Prime Numbers
wleightond
26
3ms
22 days ago
Niven Numbers
HumanoidCPU
156
4ms
24 days ago
Niven Numbers (Long)
ndren
59
24ms
24 days ago
Game of Life
wleightond
71
5ms
24 days ago
Emojify
evnu
271
4ms
24 days ago
Trinomial Triangle
wleightond
30
4ms
24 days ago
Highly Composite Numbers
wleightond
396
4ms
24 days ago
Reverse Polish Notation
maweowo
93
13ms
25 days ago
ISBN
maweowo
64
7ms
26 days ago
Intersection
maweowo
73
33ms
26 days ago
Factorial Factorisation
maweowo
64
10ms
26 days ago
Leyland Numbers
maweowo
40
5ms
2 Oct 2025
Gijswijt’s Sequence
maweowo
66
1,062ms
2 Oct 2025
Smith Numbers
maweowo
50
28ms
2 Oct 2025
Diamonds
maweowo
65
4ms
2 Oct 2025
Odious Numbers
maweowo
25
3ms
2 Oct 2025
Maze
maweowo
121
7ms
2 Oct 2025
Card Number Validation
maweowo
70
5ms
2 Oct 2025
Transpose Sentence
maweowo
56
6ms
2 Oct 2025
Farey Sequence
maweowo
61
8ms
2 Oct 2025
Inventory Sequence
maweowo
36
12ms
2 Oct 2025
Emirp Numbers
maweowo
49
10ms
2 Oct 2025
Emirp Numbers (Long)
maweowo
49
374ms
2 Oct 2025
Happy Numbers
maweowo
34
4ms
2 Oct 2025
Happy Numbers (Long)
maweowo
35
5ms
2 Oct 2025
Look and Say
maweowo
31
5ms
2 Oct 2025
Prime Numbers
ovs-code
22
4ms
1 Oct 2025
Smith Numbers
evnu
72
90ms
1 Oct 2025
Divisors
maweowo
39
3ms
1 Oct 2025
Prime Numbers (Long)
maweowo
25
6ms
1 Oct 2025
Prime Numbers
maweowo
24
4ms
1 Oct 2025
Leap Years
maweowo
39
3ms
1 Oct 2025
Lucky Numbers
maweowo
47
9ms
1 Oct 2025
Collatz
maweowo
49
380ms
1 Oct 2025