The
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hole will go live in approximately
8 hours
. Why not try and solve it ahead of time?
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Hy
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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
Ascending Primes
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
Niven Numbers (Long)
oaiqjuy
30
7ms
21 May 2026
Niven Numbers (Long)
scpchicken
26
2ms
20 May 2026
Niven Numbers (Long)
vang1ong7ang
26
3ms
17 May 2026
Niven Numbers (Long)
codereport
25
3ms
14 May 2026
Niven Numbers (Long)
rkg-huwdu
🥇
23
3ms
8 May 2026
Niven Numbers (Long)
edsrzf
🥇
23
4ms
4 May 2026
Niven Numbers (Long)
blaztoma
🥇
23
3ms
29 Apr 2026
Niven Numbers (Long)
HumanoidCPU
7,437
4ms
26 Apr 2026
Niven Numbers (Long)
GolfingSuccess
25
3ms
21 Apr 2026
Niven Numbers (Long)
emgordon154
26
3ms
22 Feb 2026
Niven Numbers (Long)
CornerMercury
26
3ms
8 Dec 2025
Niven Numbers (Long)
AlephSquirrel
28
7ms
4 Nov 2025
Niven Numbers (Long)
snoozingnewt
42
5ms
19 Sep 2025
Niven Numbers (Long)
fuzzylojik-golf
🥇
23
3ms
6 Sep 2025
Niven Numbers (Long)
CaedenHarper
7,437
4ms
16 Aug 2025
Niven Numbers (Long)
pardouin
🥇
23
4ms
15 Apr 2025
Niven Numbers (Long)
sean-niemann
🥇
23
3ms
11 Apr 2025
Niven Numbers (Long)
retrohun
7,512
3ms
9 Mar 2025
Niven Numbers (Long)
lifthrasiir
25
3ms
28 Nov 2024
Niven Numbers (Long)
GolfinK
29
3ms
21 Nov 2024
Niven Numbers (Long)
dokutan
32
8ms
14 Nov 2024
Niven Numbers (Long)
Mabeloid
7,484
3ms
22 Sep 2024
Niven Numbers (Long)
2bular
🥇
23
3ms
17 Sep 2024
Niven Numbers (Long)
4hg
26
3ms
9 Sep 2024
Niven Numbers (Long)
Steffan153
🥇
23
3ms
18 Aug 2024
Niven Numbers (Long)
zacjl
🥇
23
3ms
17 Aug 2024
Niven Numbers (Long)
copy
🥇
23
3ms
16 Aug 2024
Niven Numbers (Long)
jipsong
27
7ms
10 Aug 2024
Niven Numbers (Long)
bstrat
🥇
23
3ms
5 Aug 2024
Niven Numbers (Long)
gnuvince
27
8ms
2 Aug 2024
Niven Numbers (Long)
akamayu-ouo
26
4ms
30 Jul 2024
Niven Numbers (Long)
KatieLG
9,035
3ms
27 May 2024
Niven Numbers (Long)
ashtraypettingzoo
28
8ms
4 Apr 2024
Niven Numbers (Long)
neel11235813
29
9ms
25 Mar 2024
Niven Numbers (Long)
SirBogman
🥇
23
4ms
12 Feb 2024
Niven Numbers (Long)
DialFrost
🥇
23
3ms
2 Feb 2024
Niven Numbers (Long)
Yewzir
27
7ms
10 Dec 2023
Niven Numbers (Long)
Natanaelel
26
4ms
18 Nov 2023
Niven Numbers (Long)
kaptsanovb
32
8ms
14 Jun 2023
Niven Numbers (Long)
5cw
24
5ms
9 Apr 2023
Niven Numbers (Long)
Garklein
🥇
23
4ms
4 Jan 2023
Niven Numbers (Long)
shadowninja55
🥇
23
3ms
28 Dec 2022
Niven Numbers (Long)
rak1507
🥇
23
4ms
6 Dec 2022
Niven Numbers (Long)
primo-ppcg
27
7ms
3 Sep 2022
Niven Numbers (Long)
lynn
🥇
23
4ms
9 Aug 2022
Niven Numbers (Long)
HPWiz
🥇
23
4ms
8 Aug 2022
Niven Numbers (Long)
MeWhenI
28
7ms
8 Aug 2022
Niven Numbers (Long)
Shanethegamer
27
12ms
8 Aug 2022
Niven Numbers (Long)
ovs-code
🥇
23
3ms
8 Aug 2022
Niven Numbers (Long)
sisyphus-ppcg
🥇
23
4ms
8 Aug 2022
Niven Numbers (Long)
Bubbler-4
🥇
23
4ms
8 Aug 2022
Niven Numbers (Long)
GrayJoKing
🥇
23
3ms
8 Aug 2022