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hole will go live in approximately
26 hours
. 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
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
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Gray Code Encoder
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Intersection
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ISBN
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Leap Years
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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
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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
Pernicious Numbers
zzh1996
🥇
60
369ms
7 days ago
Pernicious Numbers
ethanlally
🥇
60
357ms
14 days ago
Pernicious Numbers
albanian-laundromat
🥇
60
389ms
14 days ago
Pernicious Numbers
CornerMercury
🥇
60
386ms
15 days ago
Pernicious Numbers
scpchicken
🥇
60
490ms
30 Jul 2026
Pernicious Numbers
JOrE20
🥇
60
544ms
24 Jun 2026
Pernicious Numbers
Orsailius
76
475ms
25 May 2026
Pernicious Numbers
janbehrens
81
478ms
16 May 2026
Pernicious Numbers
Jacob385
106
472ms
20 Apr 2026
Pernicious Numbers
Jonson26
126
462ms
15 Apr 2026
Pernicious Numbers
madex
119
431ms
29 Mar 2026
Pernicious Numbers
GolfingSuccess
🥇
60
476ms
13 Mar 2026
Pernicious Numbers
elgan65536
76
484ms
19 Feb 2026
Pernicious Numbers
Steffan153
🥇
60
487ms
11 Feb 2026
Pernicious Numbers
emgordon154
🥇
60
526ms
9 Feb 2026
Pernicious Numbers
KasperKivimaeki
🥇
60
436ms
12 Dec 2025
Pernicious Numbers
Lydxn
🥇
60
481ms
12 Dec 2025
Pernicious Numbers
dokutan
61
515ms
2 Dec 2025
Pernicious Numbers
ScottHamper
81
504ms
30 Nov 2025
Pernicious Numbers
h3ra993huskp
72
616ms
30 Nov 2025
Pernicious Numbers
tigerdan2
88
428ms
30 Nov 2025
Pernicious Numbers
sisyphus-ppcg
🥇
60
509ms
26 Nov 2025
Pernicious Numbers
HumanoidCPU
71
496ms
8 Nov 2025
Pernicious Numbers
MeWhenI
61
554ms
7 Nov 2025
Pernicious Numbers
kmathis22
76
451ms
28 Oct 2025
Pernicious Numbers
snoozingnewt
🥇
60
474ms
20 Oct 2025
Pernicious Numbers
stefangimmillaro
🥇
60
668ms
6 Oct 2025
Pernicious Numbers
m-tkach
🥇
60
532ms
3 Oct 2025
Pernicious Numbers
CaedenHarper
🥇
60
515ms
3 Oct 2025
Pernicious Numbers
ovs-code
🥇
60
509ms
3 Oct 2025
Pernicious Numbers
b-illy
🥇
60
538ms
3 Oct 2025
Pernicious Numbers
Schmitt-Very-Cool
133
575ms
3 Oct 2025
Pernicious Numbers
Yewzir
🥇
60
445ms
2 Oct 2025
Pernicious Numbers
namelessiw
🥇
60
433ms
2 Oct 2025
Pernicious Numbers
fuzzylojik-golf
🥇
60
487ms
26 Sep 2025
Pernicious Numbers
pardouin
🥇
60
583ms
26 Sep 2025
Pernicious Numbers
JayXon
🥇
60
461ms
26 Sep 2025
Pernicious Numbers
sean-niemann
🥇
60
494ms
26 Sep 2025
Pernicious Numbers
DialFrost
🥇
60
465ms
26 Sep 2025
Pernicious Numbers
edsrzf
🥇
60
472ms
26 Sep 2025
Pernicious Numbers
Liibe
78
476ms
25 Sep 2025
Pernicious Numbers
voytxt
61
462ms
25 Sep 2025
Pernicious Numbers
nwellnhof
73
473ms
25 Sep 2025
Pernicious Numbers
FlyingPenguin223
61
486ms
25 Sep 2025
Pernicious Numbers
Shanethegamer
61
476ms
25 Sep 2025
Pernicious Numbers
rucin93
61
484ms
24 Sep 2025
Pernicious Numbers
KatieLG
147
455ms
24 Sep 2025
Pernicious Numbers
Apataras
167
363ms
26 Jul 2025
Pernicious Numbers
yoshykai
147
415ms
29 Mar 2025
Pernicious Numbers
kevinnaviapaiva
247
382ms
7 Mar 2025
Pernicious Numbers
Mabeloid
206
371ms
3 Oct 2024
Pernicious Numbers
dorschmeisterV2
384
412ms
8 Jul 2024
Pernicious Numbers
bac0id
127
459ms
6 Jul 2024
Pernicious Numbers
luca1339
130
383ms
10 Jun 2024
Pernicious Numbers
msbranicky
112
392ms
9 Jan 2024
Pernicious Numbers
firegene
112
395ms
28 Dec 2023
Pernicious Numbers
Betuaredead
98
403ms
11 Nov 2023
Pernicious Numbers
retrohun
206
393ms
28 Dec 2022
Pernicious Numbers
Irratix
98
381ms
17 Oct 2022
Pernicious Numbers
cnelson20
166
405ms
11 Oct 2022
Pernicious Numbers
bwat2
131
401ms
30 Sep 2022
Pernicious Numbers
bob-th
136
382ms
30 Jun 2022
Pernicious Numbers
KatieLG-Transpiler
170
362ms
23 Jun 2022
Pernicious Numbers
inventshah
98
399ms
15 Jun 2022
Pernicious Numbers
DaCuteRaccoon
216
402ms
7 Apr 2022
Pernicious Numbers
althryenix
128
394ms
19 Feb 2022
Pernicious Numbers
mokymok
196
377ms
11 Nov 2021
Pernicious Numbers
lynn
98
370ms
11 Sep 2021
Pernicious Numbers
cbrt-x
123
386ms
19 Aug 2021
Pernicious Numbers
NewDefectus
98
380ms
28 May 2021
Pernicious Numbers
lukehewittvandy
132
392ms
12 May 2021
Pernicious Numbers
neihousaigaai
127
413ms
19 Mar 2021
Pernicious Numbers
prplz
98
370ms
10 Feb 2021
Pernicious Numbers
primo-ppcg
98
373ms
9 Feb 2021
Pernicious Numbers
GrayJoKing
98
385ms
9 Feb 2021
Pernicious Numbers
vSweePerxX
267
423ms
22 Jan 2021
Pernicious Numbers
Attero
108
392ms
29 Apr 2020