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hole will go live in approximately
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. Why not try and solve it ahead of time?
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12 Days of Christmas
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Abundant Numbers
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Arabic to Roman
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Arrows
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Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
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Christmas Trees
Collatz
Connect Four
Continued Fractions
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
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Gray Code Decoder
Gray Code Encoder
Happy Numbers
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Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
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Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
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Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
Musical Chords
N Queens
Nim
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)
Taxicab Numbers
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
Ulam Sequence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Binary Lambda Calculus
Chess960 Decoder
Chess960 Encoder
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
Hole
Golfer
Bytes
Time
Submitted
Evil Numbers
scpchicken
83
149ms
16 Aug 2026
Evil Numbers
denkyuu1
38
325ms
25 May 2026
Evil Numbers
HumanoidCPU
41
276ms
17 May 2026
Evil Numbers
madeforlosers
78
159ms
23 Apr 2026
Evil Numbers
KatieLG
97
164ms
30 Nov 2025
Evil Numbers
snoozingnewt
41
263ms
27 Nov 2025
Evil Numbers
Daniel-Ellison
38
325ms
15 Aug 2025
Evil Numbers
Ripick
40
320ms
24 Jun 2025
Evil Numbers
rucin93
80
140ms
26 Apr 2025
Evil Numbers
CaedenHarper
78
176ms
1 Feb 2025
Evil Numbers
anter69
93
200ms
16 Oct 2024
Evil Numbers
emgordon154
40
216ms
5 Oct 2024
Evil Numbers
alemelis
37
433ms
27 Sep 2024
Evil Numbers
Mabeloid
78
162ms
17 Sep 2024
Evil Numbers
pardouin
37
365ms
5 Sep 2024
Evil Numbers
sean-niemann
🥇
31
314ms
7 Aug 2024
Evil Numbers
Steffan153
🥇
31
299ms
6 Aug 2024
Evil Numbers
crhewitt
45
247ms
27 Jul 2024
Evil Numbers
antimon2
33
395ms
11 Jul 2024
Evil Numbers
rollershutter
42
283ms
3 Jul 2024
Evil Numbers
zvnkk
61
348ms
15 Jun 2024
Evil Numbers
ovs-code
33
332ms
12 Mar 2024
Evil Numbers
roguh
59
276ms
22 Jan 2024
Evil Numbers
Yewzir
38
338ms
20 Jan 2024
Evil Numbers
Lydxn
🥇
31
319ms
16 Jan 2024
Evil Numbers
JayXon
🥇
31
315ms
16 Jan 2024
Evil Numbers
msbranicky
44
242ms
15 Jan 2024
Evil Numbers
stellartux
42
254ms
24 Dec 2023
Evil Numbers
bciccarelli
44
230ms
11 Sep 2023
Evil Numbers
davbass
43
253ms
21 Aug 2023
Evil Numbers
MeWhenI
36
245ms
5 Aug 2023
Evil Numbers
Schmitt-Very-Cool
104
163ms
31 Jul 2023
Evil Numbers
Andriamanitra
42
261ms
28 Jul 2023
Evil Numbers
dokutan
43
274ms
21 Jul 2023
Evil Numbers
janbehrens
40
285ms
11 Jul 2023
Evil Numbers
Shanethegamer
33
271ms
22 Mar 2023
Evil Numbers
sisyphus-ppcg
33
246ms
24 Jan 2023
Evil Numbers
DialFrost
38
349ms
18 Nov 2022
Evil Numbers
HopelessSoap
78
246ms
21 Oct 2022
Evil Numbers
Codsilla
42
243ms
3 Jul 2022
Evil Numbers
KatieLG-Transpiler
149
148ms
23 Jun 2022
Evil Numbers
MarcMush
38
306ms
13 Jan 2022
Evil Numbers
mokymok
102
153ms
9 Nov 2021
Evil Numbers
DeniedPyro
56
443ms
29 Oct 2021
Evil Numbers
theunofficialcoder
78
169ms
1 Sep 2021
Evil Numbers
kurkale6ka
78
163ms
27 Jul 2021
Evil Numbers
cure-honey
38
255ms
14 Jun 2021
Evil Numbers
Anonymousellama21
102
165ms
3 Jun 2021
Evil Numbers
RustemB
56
236ms
4 May 2021
Evil Numbers
JRaspass
81
175ms
17 Mar 2021
Evil Numbers
mossr
52
303ms
24 Feb 2021
Evil Numbers
xkacer
102
168ms
22 Nov 2020
Evil Numbers
evetion
57
265ms
14 Nov 2020
Evil Numbers
HPWiz
36
257ms
9 Nov 2020
Evil Numbers
detrumi
42
244ms
24 Oct 2020
Evil Numbers
primo-ppcg
35
243ms
10 Oct 2020
Evil Numbers
masflam
78
329ms
20 Aug 2020
Evil Numbers
taigua
96
219ms
19 Aug 2020
Evil Numbers
jacobpake
47
244ms
9 Aug 2020
Evil Numbers
laserb
42
288ms
25 Jan 2020
Evil Numbers
ETHproductions
35
254ms
16 Aug 2019
Evil Numbers
codejohnson
67
244ms
29 Apr 2019
Evil Numbers
retrohun
80
145ms
21 Dec 2018
Evil Numbers
dloscutoff
50
308ms
23 Nov 2018