The
Minesweeper
hole will go live in approximately
4 days
. 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
Christmas Trees
Collatz
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Day of Week
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Diamonds
Divisors
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Emirp Numbers (Long)
Emojify
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Evil Numbers (Long)
Factorial Factorisation
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Fizz Buzz
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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ln 2
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Mahjong
Mandelbrot
Maze
Medal Tally
Morse Decoder
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N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
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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
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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
Zeckendorf Representation
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
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Minesweeper
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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
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
12 Days of Christmas
dvckyduck
746
314ms
7 hours ago
λ
GolfingSuccess
1,012
186ms
11 days ago
Tutorial
Babafaba
113
292ms
11 days ago
Tutorial
retrohun
167
246ms
19 Sep 2025
π
ChesterJFGould
155
1,045ms
19 Sep 2025
Tutorial
snoozingnewt
72
196ms
15 Sep 2025
Fizz Buzz
snoozingnewt
100
228ms
14 Sep 2025
Mahjong
kg583
376
333ms
12 Sep 2025
Collatz
kmathis22
151
188ms
4 Sep 2025
Fizz Buzz
madex
107
195ms
3 Sep 2025
Fizz Buzz
CaedenHarper
107
197ms
28 Aug 2025
Tutorial
Vexxter9
167
274ms
21 Aug 2025
Highly Composite Numbers
HumanoidCPU
401
184ms
18 Aug 2025
Hilbert Curve
HumanoidCPU
5,127
165ms
18 Aug 2025
Abundant Numbers (Long)
HumanoidCPU
973
176ms
18 Aug 2025
Polyominoes
HumanoidCPU
3,573
263ms
18 Aug 2025
Recamán
HumanoidCPU
906
207ms
18 Aug 2025
Pascal’s Triangle
HumanoidCPU
778
223ms
18 Aug 2025
Kaprekar Numbers
HumanoidCPU
449
193ms
18 Aug 2025
Happy Numbers
HumanoidCPU
116
193ms
18 Aug 2025
Happy Numbers (Long)
HumanoidCPU
561
221ms
18 Aug 2025
Emirp Numbers (Long)
HumanoidCPU
1,165
195ms
18 Aug 2025
Catalan Numbers
HumanoidCPU
2,881
195ms
18 Aug 2025
Tongue-twisters
HumanoidCPU
532
204ms
18 Aug 2025
Van Eck Sequence
HumanoidCPU
2,564
206ms
17 Aug 2025
Topological Sort
edsrzf
170
3,772ms
16 Aug 2025
Abundant Numbers
HumanoidCPU
172
186ms
16 Aug 2025
Look and Say
HumanoidCPU
1,288
188ms
15 Aug 2025
Leyland Numbers
HumanoidCPU
895
194ms
15 Aug 2025
Farey Sequence
HumanoidCPU
4,363
198ms
15 Aug 2025
Diamonds
HumanoidCPU
1,112
162ms
14 Aug 2025
Niven Numbers
HumanoidCPU
100
158ms
14 Aug 2025
Lucky Numbers
HumanoidCPU
4,829
166ms
14 Aug 2025
Inventory Sequence
HumanoidCPU
2,632
183ms
14 Aug 2025
Gijswijt’s Sequence
HumanoidCPU
2,009
182ms
14 Aug 2025
Smith Numbers
HumanoidCPU
1,833
189ms
14 Aug 2025
Arithmetic Numbers
HumanoidCPU
37,651
207ms
14 Aug 2025
Odious Numbers (Long)
HumanoidCPU
1,954
193ms
14 Aug 2025
Evil Numbers (Long)
HumanoidCPU
1,959
220ms
14 Aug 2025
N Queens
HumanoidCPU
1,255
200ms
14 Aug 2025
Pernicious Numbers (Long)
HumanoidCPU
20,671
207ms
14 Aug 2025
Divisors
HumanoidCPU
1,175
192ms
14 Aug 2025
Foo Fizz Buzz Bar
HumanoidCPU
5,728
180ms
14 Aug 2025
Emirp Numbers
HumanoidCPU
145
166ms
14 Aug 2025
Prime Numbers (Long)
HumanoidCPU
5,957
184ms
14 Aug 2025
24 Game
HumanoidCPU
12,441
182ms
14 Aug 2025
Niven Numbers (Long)
HumanoidCPU
7,447
207ms
14 Aug 2025
Odious Numbers
HumanoidCPU
82
184ms
11 Aug 2025
Evil Numbers
HumanoidCPU
79
178ms
10 Aug 2025
Trinomial Triangle
HumanoidCPU
2,076
175ms
6 Aug 2025
Rijndael S-box
HumanoidCPU
777
200ms
4 Aug 2025
Prime Numbers
HumanoidCPU
80
177ms
2 Aug 2025
Sierpiński Triangle
HumanoidCPU
563
179ms
2 Aug 2025
Sphenic Numbers
HumanoidCPU
8,869
193ms
29 Jul 2025
π
Ralac07
1,013
145ms
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,799
147ms
28 Jul 2025
Tutorial
frankgraziano
72
206ms
26 Jul 2025
Card Number Validation
edsrzf
142
216ms
24 Jul 2025
Ten-pin Bowling
edsrzf
168
214ms
19 Jul 2025
Tutorial
Bpc-CPU
167
206ms
12 Jul 2025
Fibonacci
HumanoidCPU
144
177ms
1 Jul 2025
Mandelbrot
edsrzf
121
1,169ms
1 Jul 2025
Mandelbrot
HumanoidCPU
10,013
176ms
30 Jun 2025
Billiards
edsrzf
218
200ms
29 Jun 2025
Number Spiral
HumanoidCPU
309
177ms
27 Jun 2025
PalindromemordnilaP
edsrzf
135
188ms
26 Jun 2025
Medal Tally
edsrzf
212
199ms
26 Jun 2025
Trinomial Triangle
edsrzf
84
245ms
21 Jun 2025
Smith Numbers
edsrzf
207
327ms
21 Jun 2025
Collatz
HumanoidCPU
3,235
213ms
20 Jun 2025
ISBN
edsrzf
140
217ms
19 Jun 2025
Vampire Numbers
edsrzf
197
2,455ms
17 Jun 2025
Hexdump
edsrzf
265
247ms
16 Jun 2025
Look and Say
edsrzf
115
207ms
15 Jun 2025
Emirp Numbers (Long)
edsrzf
154
287ms
15 Jun 2025