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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BQN
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Egel
Fennel
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Hare
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Hy
Knight
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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
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)
dpamar
75
75ms
17 days ago
Happy Numbers (Long)
a6166231
77
9ms
19 days ago
Happy Numbers (Long)
Europe2048
74
8ms
21 days ago
Happy Numbers (Long)
tomh1012
126
9ms
25 days ago
Happy Numbers (Long)
egu555
66
8ms
21 Aug 2026
Happy Numbers (Long)
JOrE20
66
8ms
16 Jun 2026
Happy Numbers (Long)
retrohun
91
7ms
30 May 2026
Happy Numbers (Long)
iczelia
71
8ms
25 May 2026
Happy Numbers (Long)
oaiqjuy
69
8ms
18 May 2026
Happy Numbers (Long)
solisolu
78
8ms
23 Apr 2026
Happy Numbers (Long)
Program-Pi
81
10ms
5 Mar 2026
Happy Numbers (Long)
Lv0Sys
66
11ms
28 Feb 2026
Happy Numbers (Long)
Protothor
82
10ms
26 Feb 2026
Happy Numbers (Long)
KrausRaus
69
8ms
6 Jan 2026
Happy Numbers (Long)
gigaprofisi
123
9ms
17 Dec 2025
Happy Numbers (Long)
smclaughlin-cf
101
11ms
27 Nov 2025
Happy Numbers (Long)
blaztoma
74
8ms
23 Nov 2025
Happy Numbers (Long)
CaedenHarper
83
12ms
15 Sep 2025
Happy Numbers (Long)
XenThe
560
6ms
3 Sep 2025
Happy Numbers (Long)
acollett89
83
9ms
4 Aug 2025
Happy Numbers (Long)
codewrite
90
19ms
30 Jun 2025
Happy Numbers (Long)
MyXoToD
160
14ms
8 May 2025
Happy Numbers (Long)
targrik
64
8ms
19 Feb 2025
Happy Numbers (Long)
dokutan
80
19ms
24 Dec 2024
Happy Numbers (Long)
mobibluman
97
13ms
19 Dec 2024
Happy Numbers (Long)
emgordon154
73
8ms
7 Nov 2024
Happy Numbers (Long)
alexsave
92
8ms
7 Nov 2024
Happy Numbers (Long)
goodwyna21
116
1,236ms
29 Oct 2024
Happy Numbers (Long)
madeforlosers
125
9ms
23 Oct 2024
Happy Numbers (Long)
roguh
528
7ms
13 Oct 2024
Happy Numbers (Long)
xyangst
107
9ms
7 Oct 2024
Happy Numbers (Long)
Mabeloid
702
6ms
18 Sep 2024
Happy Numbers (Long)
lukegustafson
🥇
62
9ms
6 Sep 2024
Happy Numbers (Long)
snoozingnewt
74
10ms
1 Sep 2024
Happy Numbers (Long)
ovs-code
67
12ms
29 Jul 2024
Happy Numbers (Long)
helbling
77
7ms
4 Jul 2024
Happy Numbers (Long)
junkondo-jp
86
9ms
25 Jun 2024
Happy Numbers (Long)
HumanoidCPU
122
8ms
22 Jun 2024
Happy Numbers (Long)
hacker112
560
6ms
20 Jun 2024
Happy Numbers (Long)
vlpx
🥇
62
8ms
18 Jun 2024
Happy Numbers (Long)
madex
91
8ms
13 Jun 2024
Happy Numbers (Long)
thisishowmymindworks
74
98ms
9 Jun 2024
Happy Numbers (Long)
rucin93
🥇
62
8ms
19 Apr 2024
Happy Numbers (Long)
two-bad
72
12ms
25 Feb 2024
Happy Numbers (Long)
sean-niemann
🥇
62
16ms
22 Feb 2024
Happy Numbers (Long)
steffan-polygolf
104
7ms
19 Feb 2024
Happy Numbers (Long)
olleicua
109
9ms
13 Feb 2024
Happy Numbers (Long)
dylanarmstrong
79
9ms
24 Jan 2024
Happy Numbers (Long)
nsprd
501
7ms
22 Jan 2024
Happy Numbers (Long)
boundbydeterminism
147
9ms
17 Jan 2024
Happy Numbers (Long)
Yewzir
87
7ms
13 Jan 2024
Happy Numbers (Long)
efgen
128
16ms
28 Dec 2023
Happy Numbers (Long)
trinityy-7
86
7ms
6 Dec 2023
Happy Numbers (Long)
Florian-Mt
131
10ms
23 Oct 2023
Happy Numbers (Long)
coreynash
85
10ms
17 Oct 2023
Happy Numbers (Long)
stefangimmillaro
72
12ms
29 Sep 2023
Happy Numbers (Long)
ollyspooner
560
6ms
27 Sep 2023
Happy Numbers (Long)
inventshah
67
9ms
26 Sep 2023
Happy Numbers (Long)
weliveinhell
89
14ms
23 Sep 2023
Happy Numbers (Long)
LukeBridges
113
17ms
14 Sep 2023
Happy Numbers (Long)
msbranicky
142
7ms
8 Sep 2023
Happy Numbers (Long)
raszpi
99
8ms
3 Sep 2023
Happy Numbers (Long)
Argeento
66
7ms
26 Aug 2023
Happy Numbers (Long)
daniel-cardone
92
8ms
23 Aug 2023
Happy Numbers (Long)
typeswitch-dev
96
7ms
1 Aug 2023
Happy Numbers (Long)
Maznek
74
8ms
19 Jun 2023
Happy Numbers (Long)
lyphyser
77
7ms
3 Jun 2023
Happy Numbers (Long)
adamnielson42
116
7ms
2 Jun 2023
Happy Numbers (Long)
zakariamouhid
97
8ms
20 May 2023
Happy Numbers (Long)
tayloia
83
10ms
11 May 2023
Happy Numbers (Long)
Shanethegamer
69
7ms
25 Apr 2023
Happy Numbers (Long)
Mazn3k
85
8ms
15 Mar 2023
Happy Numbers (Long)
piano-miles
85
8ms
12 Mar 2023
Happy Numbers (Long)
nwellnhof
🥇
62
9ms
3 Mar 2023
Happy Numbers (Long)
amiralitaheri
91
9ms
23 Feb 2023
Happy Numbers (Long)
Steffan153
🥇
62
10ms
28 Jan 2023
Happy Numbers (Long)
dmrichwa
64
9ms
28 Jan 2023
Happy Numbers (Long)
DialFrost
66
12ms
28 Jan 2023
Happy Numbers (Long)
randolchance
82
8ms
11 Jan 2023
Happy Numbers (Long)
ZoeMcG
119
8ms
8 Jan 2023
Happy Numbers (Long)
Kesefon
94
8ms
24 Nov 2022
Happy Numbers (Long)
emplv
🥇
62
9ms
17 Nov 2022
Happy Numbers (Long)
BambooleanLogic
91
9ms
14 Nov 2022
Happy Numbers (Long)
eranws
102
9ms
24 Oct 2022
Happy Numbers (Long)
moikaturns
90
9ms
21 Oct 2022
Happy Numbers (Long)
vroup
134
8ms
2 Oct 2022
Happy Numbers (Long)
null-tangent
156
8ms
30 Aug 2022
Happy Numbers (Long)
Re-Adventures
77
9ms
14 Aug 2022
Happy Numbers (Long)
AlephSquirrel
81
8ms
8 Aug 2022
Happy Numbers (Long)
maxpelic
134
9ms
5 Jul 2022
Happy Numbers (Long)
KatieLG-Transpiler
560
7ms
23 Jun 2022
Happy Numbers (Long)
tapio-salonen
89
7ms
22 Jun 2022
Happy Numbers (Long)
GeorgeStechman
558
6ms
17 Jun 2022
Happy Numbers (Long)
Lydxn
🥇
62
9ms
22 May 2022
Happy Numbers (Long)
KatieLG
73
12ms
5 Apr 2022
Happy Numbers (Long)
jared-hughes
77
7ms
14 Mar 2022
Happy Numbers (Long)
berdzi
109
8ms
11 Mar 2022
Happy Numbers (Long)
voytxt
80
8ms
2 Mar 2022
Happy Numbers (Long)
Garklein
84
8ms
20 Feb 2022
Happy Numbers (Long)
gnlow
408
6ms
27 Jan 2022