The
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hole will go live in approximately
2 days
. Why not try and solve it ahead of time?
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brainfuck
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Crystal
D
Dart
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iogii
J
Janet
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jq
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K
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Python
R
Raku
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Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
ZuzuScript
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
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
Bytes
Time
Submitted
Happy Numbers (Long)
JOrE20
112
351ms
3 days ago
Happy Numbers (Long)
zzh1996
110
388ms
6 days ago
Happy Numbers (Long)
ethanlally
106
458ms
30 Jun 2026
Happy Numbers (Long)
Orsailius
151
462ms
7 Jun 2026
Happy Numbers (Long)
janbehrens
126
507ms
16 May 2026
Happy Numbers (Long)
error256
117
529ms
13 Mar 2026
Happy Numbers (Long)
Steffan153
🥇
102
595ms
11 Feb 2026
Happy Numbers (Long)
ravnskjaer
138
474ms
15 Dec 2025
Happy Numbers (Long)
KasperKivimaeki
105
479ms
12 Dec 2025
Happy Numbers (Long)
Lydxn
🥇
102
490ms
12 Dec 2025
Happy Numbers (Long)
snoozingnewt
111
468ms
5 Dec 2025
Happy Numbers (Long)
h3ra993huskp
113
510ms
30 Nov 2025
Happy Numbers (Long)
dokutan
111
479ms
23 Nov 2025
Happy Numbers (Long)
kmathis22
111
450ms
20 Nov 2025
Happy Numbers (Long)
DialFrost
104
630ms
16 Nov 2025
Happy Numbers (Long)
HumanoidCPU
162
538ms
8 Nov 2025
Happy Numbers (Long)
MeWhenI
110
390ms
7 Nov 2025
Happy Numbers (Long)
CaedenHarper
110
600ms
5 Nov 2025
Happy Numbers (Long)
Babafaba
123
498ms
14 Oct 2025
Happy Numbers (Long)
namelessiw
118
473ms
6 Oct 2025
Happy Numbers (Long)
stefangimmillaro
111
490ms
6 Oct 2025
Happy Numbers (Long)
Yewzir
110
482ms
2 Oct 2025
Happy Numbers (Long)
Schmitt-Very-Cool
129
501ms
30 Sep 2025
Happy Numbers (Long)
JayXon
🥇
102
495ms
26 Sep 2025
Happy Numbers (Long)
sean-niemann
🥇
102
463ms
26 Sep 2025
Happy Numbers (Long)
Liibe
194
471ms
25 Sep 2025
Happy Numbers (Long)
nwellnhof
103
534ms
25 Sep 2025
Happy Numbers (Long)
Shanethegamer
110
455ms
25 Sep 2025
Happy Numbers (Long)
jared-hughes
123
476ms
24 Sep 2025
Happy Numbers (Long)
KatieLG
599
454ms
24 Sep 2025
Happy Numbers (Long)
Apataras
157
389ms
20 Aug 2025
Happy Numbers (Long)
yoshykai
181
427ms
15 Apr 2025
Happy Numbers (Long)
Jacob385
358
399ms
21 Feb 2025
Happy Numbers (Long)
Mabeloid
766
386ms
18 Sep 2024
Happy Numbers (Long)
bac0id
221
440ms
30 Jun 2024
Happy Numbers (Long)
msbranicky
188
382ms
9 Jan 2024
Happy Numbers (Long)
PierceZ
798
446ms
29 Nov 2023
Happy Numbers (Long)
benradclyffe
195
381ms
15 May 2023
Happy Numbers (Long)
ToxicP1e
336
427ms
20 Jan 2023
Happy Numbers (Long)
retrohun
766
478ms
27 Dec 2022
Happy Numbers (Long)
KatieLG-Transpiler
622
404ms
23 Jun 2022
Happy Numbers (Long)
tejokumar
495
429ms
22 Jan 2022
Happy Numbers (Long)
inventshah
148
406ms
18 Jan 2022
Happy Numbers (Long)
bwat2
254
433ms
7 Jan 2022
Happy Numbers (Long)
Irratix
147
407ms
11 Dec 2021
Happy Numbers (Long)
cbrt-x
162
412ms
25 Sep 2021
Happy Numbers (Long)
primo-ppcg
147
373ms
23 Sep 2021