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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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Hare
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Hush
Hy
Knight
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Luau
Odin
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Alphabetic Numbers
Arabic to Roman
Arithmetic Numbers
Arrows
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ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Chess Move Validation
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
Gijswijt’s Sequence
Gray Code Decoder
Gray Code Encoder
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
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
Chars
Time
Submitted
Collatz
error256
50
43ms
18 days ago
Collatz
egu555
59
43ms
28 Aug 2026
Collatz
scpchicken
3,246
38ms
16 Aug 2026
Collatz
CaedenHarper
53
47ms
4 Jul 2026
Collatz
madex
54
44ms
5 Apr 2026
Collatz
Steffan153
💎
46
46ms
28 Mar 2026
Collatz
blaztoma
51
41ms
11 Mar 2026
Collatz
denkyuu1
56
55ms
11 Feb 2026
Collatz
TheZwierzLF
65
42ms
6 Jan 2026
Collatz
D-MOVE
56
44ms
8 Dec 2025
Collatz
lacrosse
57
46ms
27 Nov 2025
Collatz
Laellekoenig
59
41ms
6 Nov 2025
Collatz
snoozingnewt
64
42ms
25 Oct 2025
Collatz
KatieLG
60
46ms
2 Oct 2025
Collatz
kmathis22
78
38ms
5 Sep 2025
Collatz
radarek
🥈
49
196ms
26 Aug 2025
Collatz
vishal-mohanty
54
43ms
25 Aug 2025
Collatz
pardouin
50
42ms
22 Aug 2025
Collatz
yobatm
98
44ms
22 Aug 2025
Collatz
Ohh-n
73
42ms
9 Aug 2025
Collatz
ejini6969
59
42ms
13 Jun 2025
Collatz
sean-niemann
50
42ms
9 Jun 2025
Collatz
AbrahamJLR
54
44ms
4 Jun 2025
Collatz
LostSyntax21
54
44ms
12 Mar 2025
Collatz
HumanoidCPU
1,637
40ms
26 Dec 2024
Collatz
tatzyr
56
44ms
10 Dec 2024
Collatz
madeforlosers
71
40ms
7 Nov 2024
Collatz
dokutan
59
41ms
19 Oct 2024
Collatz
lgrandco
56
40ms
9 Oct 2024
Collatz
Mabeloid
3,231
37ms
17 Sep 2024
Collatz
beergit
72
41ms
7 Aug 2024
Collatz
emgordon154
58
48ms
26 Jul 2024
Collatz
truisseaux
70
53ms
12 Apr 2024
Collatz
rniii
59
43ms
26 Mar 2024
Collatz
3dm4n
56
43ms
11 Mar 2024
Collatz
adoxography
68
42ms
2 Mar 2024
Collatz
RuyiLi
63
42ms
21 Feb 2024
Collatz
anter69
56
40ms
12 Feb 2024
Collatz
olleicua
54
40ms
21 Jan 2024
Collatz
Shanethegamer
58
40ms
25 Dec 2023
Collatz
catflip
83
40ms
30 Nov 2023
Collatz
hollma
81
42ms
20 Oct 2023
Collatz
msbranicky
85
41ms
10 Oct 2023
Collatz
aaronze
61
46ms
17 Sep 2023
Collatz
annaproxy
58
43ms
15 Sep 2023
Collatz
pfysches-boop
71
42ms
6 Aug 2023
Collatz
MeWhenI
52
66ms
25 Jul 2023
Collatz
janbehrens
60
42ms
17 May 2023
Collatz
vrnprkh
70
39ms
30 Mar 2023
Collatz
Haksell
53
43ms
22 Feb 2023
Collatz
sisyphus-ppcg
50
45ms
20 Feb 2023
Collatz
aksyristos
56
47ms
29 Jan 2023
Collatz
fynnkroeger
61
41ms
6 Jan 2023
Collatz
Betuaredead
93
40ms
5 Jan 2023
Collatz
DialFrost
55
41ms
1 Jan 2023
Collatz
retrohun
3,231
40ms
27 Dec 2022
Collatz
sreedevk
101
42ms
4 Dec 2022
Collatz
GrayJoKing
🥈
49
40ms
15 Nov 2022
Collatz
JayXon
🥈
49
40ms
17 Oct 2022
Collatz
Feniske
66
41ms
8 Oct 2022
Collatz
OhmNomNom
54
42ms
7 Oct 2022
Collatz
stefangimmillaro
53
43ms
2 Oct 2022
Collatz
jared-hughes
54
44ms
12 Sep 2022
Collatz
tkr-sh
58
45ms
8 Sep 2022
Collatz
4hg
55
40ms
24 Aug 2022
Collatz
razetime
60
43ms
22 Aug 2022
Collatz
purp
62
39ms
13 Aug 2022
Collatz
Andriamanitra
54
44ms
21 Jul 2022
Collatz
jamespeilunli
75
40ms
4 Jul 2022
Collatz
Irratix
57
43ms
29 Jun 2022
Collatz
shinh
52
41ms
29 Jun 2022
Collatz
KatieLG-Transpiler
3,231
39ms
24 Jun 2022
Collatz
Natanaelel
51
41ms
2 Jun 2022
Collatz
janlelis
51
43ms
10 May 2022
Collatz
ovs-code
50
238ms
7 May 2022
Collatz
olivermrose
55
43ms
6 May 2022
Collatz
primo-ppcg
51
43ms
6 May 2022
Collatz
Waffle3z
64
42ms
6 May 2022
Collatz
DaCuteRaccoon
60
44ms
5 May 2022
Collatz
SirBogman
55
40ms
5 May 2022
Collatz
canissimia
50
42ms
5 May 2022
Collatz
Lydxn
🥈
49
41ms
4 May 2022
Collatz
nwellnhof
51
40ms
4 May 2022
Collatz
ChiefChippy2
56
41ms
4 May 2022
Collatz
JRaspass
3,231
40ms
4 May 2022