The
Minesweeper
hole will go live in approximately
30 hours
. Why not try and solve it ahead of time?
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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brainfuck
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Catalan’s Constant
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Emirp Numbers
Emirp Numbers (Long)
Emojify
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Factorial Factorisation
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Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
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Happy Numbers (Long)
Hexdump
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Intersection
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ln 2
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Mahjong
Mandelbrot
Maze
Medal Tally
Morse Decoder
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Niven Numbers
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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
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Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
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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
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
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Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
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Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
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p-adic Expansion
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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
Tower of Hanoi
Shanethegamer
4,096
135ms
15 hours ago
𝑒
KatieLG
1,025
137ms
5 days ago
√2
KatieLG
1,025
139ms
5 days ago
φ
KatieLG
1,025
139ms
5 days ago
τ
KatieLG
1,025
136ms
5 days ago
π
KatieLG
1,025
136ms
5 days ago
λ
KatieLG
1,025
142ms
5 days ago
γ
KatieLG
1,025
138ms
5 days ago
Van Eck Sequence
KatieLG
3,576
134ms
5 days ago
Vampire Numbers
KatieLG
1,247
133ms
5 days ago
Tongue-twisters
KatieLG
558
134ms
5 days ago
Tic-tac-toe
KatieLG
18,357
403ms
5 days ago
Star Wars Opening Crawl
KatieLG
5,605
145ms
5 days ago
Smith Numbers
KatieLG
2,221
134ms
5 days ago
Roman to Arabic
KatieLG
42,133
681ms
5 days ago
Rock-paper-scissors-Spock-lizard
KatieLG
838
152ms
5 days ago
Rijndael S-box
KatieLG
805
133ms
5 days ago
Recamán
KatieLG
1,168
135ms
5 days ago
Proximity Grid
KatieLG
3,765
146ms
5 days ago
Prime Numbers (Long)
KatieLG
7,198
136ms
5 days ago
Prime Numbers
KatieLG
117
137ms
5 days ago
Polyominoes
KatieLG
4,851
138ms
5 days ago
Pernicious Numbers (Long)
KatieLG
24,935
137ms
5 days ago
Pernicious Numbers
KatieLG
156
135ms
5 days ago
Pascal’s Triangle
KatieLG
810
133ms
5 days ago
Partition Numbers
KatieLG
768
141ms
5 days ago
Odious Numbers (Long)
KatieLG
2,466
140ms
5 days ago
Odious Numbers
KatieLG
120
141ms
5 days ago
Number Spiral
KatieLG
331
139ms
5 days ago
Niven Numbers (Long)
KatieLG
8,997
140ms
5 days ago
Niven Numbers
KatieLG
145
137ms
5 days ago
N Queens
KatieLG
1,415
136ms
5 days ago
Musical Chords
KatieLG
7,475
218ms
5 days ago
Lucky Tickets
KatieLG
3,449
188ms
5 days ago
Lucky Numbers
KatieLG
5,841
140ms
5 days ago
Look and Say
KatieLG
1,320
137ms
5 days ago
ln 2
KatieLG
1,025
137ms
5 days ago
Leyland Numbers
KatieLG
1,014
139ms
5 days ago
Leap Years
KatieLG
897
135ms
5 days ago
Kolakoski Sequence
KatieLG
2,022
145ms
5 days ago
Kolakoski Constant
KatieLG
1,025
139ms
5 days ago
Kaprekar Numbers
KatieLG
529
139ms
5 days ago
Inventory Sequence
KatieLG
3,644
137ms
5 days ago
Happy Numbers (Long)
KatieLG
716
136ms
5 days ago
Happy Numbers
KatieLG
160
135ms
5 days ago
Gijswijt’s Sequence
KatieLG
3,021
137ms
5 days ago
Foo Fizz Buzz Bar
KatieLG
6,740
137ms
5 days ago
Fibonacci
KatieLG
186
141ms
5 days ago
Farey Sequence
KatieLG
5,150
138ms
5 days ago
Factorial Factorisation
KatieLG
884
138ms
5 days ago
Evil Numbers (Long)
KatieLG
2,472
135ms
5 days ago
Evil Numbers
KatieLG
116
143ms
5 days ago
Emirp Numbers (Long)
KatieLG
1,417
138ms
5 days ago
Emirp Numbers
KatieLG
193
136ms
5 days ago
Divisors
KatieLG
1,287
135ms
5 days ago
Diamonds
KatieLG
1,213
140ms
5 days ago
Collatz
KatieLG
4,247
139ms
5 days ago
Christmas Trees
KatieLG
621
138ms
5 days ago
Catalan’s Constant
KatieLG
1,025
139ms
5 days ago
Catalan Numbers
KatieLG
2,993
141ms
5 days ago
Ascending Primes
KatieLG
633
138ms
5 days ago
Arithmetic Numbers
KatieLG
45,351
141ms
5 days ago
Abundant Numbers (Long)
KatieLG
1,231
141ms
5 days ago
Abundant Numbers
KatieLG
230
137ms
5 days ago
99 Bottles of Beer
KatieLG
12,205
137ms
5 days ago
24 Game
KatieLG
13,815
141ms
5 days ago
12 Days of Christmas
KatieLG
2,503
140ms
5 days ago
Emojify
KatieLG
481
153ms
5 days ago
Fizz Buzz
KatieLG
534
143ms
5 days ago
Tutorial
Babafaba
264
227ms
14 days ago
Fizz Buzz
snoozingnewt
125
175ms
1 Oct 2025
Tutorial
retrohun
264
213ms
19 Sep 2025
Tutorial
snoozingnewt
86
192ms
15 Sep 2025
Quine
albanian-laundromat
82
162ms
3 Sep 2025
Fibonacci
albanian-laundromat
66
194ms
26 Aug 2025