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Snake
hole will go live in approximately
37 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
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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
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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)
JOrE20
79
369ms
4 days ago
Niven Numbers (Long)
zzh1996
80
359ms
7 days ago
Niven Numbers (Long)
ethanlally
80
770ms
19 Jun 2026
Niven Numbers (Long)
janbehrens
98
514ms
16 May 2026
Niven Numbers (Long)
emgordon154
80
453ms
9 May 2026
Niven Numbers (Long)
reflogedoc
85
488ms
7 May 2026
Niven Numbers (Long)
Steffan153
🥇
75
517ms
5 May 2026
Niven Numbers (Long)
edsrzf
79
516ms
5 May 2026
Niven Numbers (Long)
madeforlosers
9,037
391ms
22 Apr 2026
Niven Numbers (Long)
Jonson26
100
471ms
15 Apr 2026
Niven Numbers (Long)
Chinay-Domitrix
100
551ms
18 Mar 2026
Niven Numbers (Long)
error256
80
505ms
12 Mar 2026
Niven Numbers (Long)
Lydxn
🥇
75
417ms
14 Dec 2025
Niven Numbers (Long)
snoozingnewt
80
477ms
10 Dec 2025
Niven Numbers (Long)
CaedenHarper
80
561ms
8 Dec 2025
Niven Numbers (Long)
b-illy
79
596ms
8 Dec 2025
Niven Numbers (Long)
KasperKivimaeki
97
475ms
1 Dec 2025
Niven Numbers (Long)
KatieLG
5,522
513ms
30 Nov 2025
Niven Numbers (Long)
h3ra993huskp
94
515ms
30 Nov 2025
Niven Numbers (Long)
tigerdan2
101
439ms
30 Nov 2025
Niven Numbers (Long)
sisyphus-ppcg
80
473ms
25 Nov 2025
Niven Numbers (Long)
HumanoidCPU
133
554ms
8 Nov 2025
Niven Numbers (Long)
MeWhenI
81
553ms
7 Nov 2025
Niven Numbers (Long)
Jacob385
93
498ms
28 Oct 2025
Niven Numbers (Long)
kmathis22
93
418ms
14 Oct 2025
Niven Numbers (Long)
namelessiw
79
456ms
6 Oct 2025
Niven Numbers (Long)
stefangimmillaro
80
502ms
6 Oct 2025
Niven Numbers (Long)
m-tkach
79
595ms
3 Oct 2025
Niven Numbers (Long)
Schmitt-Very-Cool
87
496ms
3 Oct 2025
Niven Numbers (Long)
Yewzir
79
515ms
2 Oct 2025
Niven Numbers (Long)
fuzzylojik-golf
79
499ms
26 Sep 2025
Niven Numbers (Long)
pardouin
79
506ms
26 Sep 2025
Niven Numbers (Long)
JayXon
🥇
75
458ms
26 Sep 2025
Niven Numbers (Long)
sean-niemann
79
485ms
26 Sep 2025
Niven Numbers (Long)
DialFrost
79
479ms
26 Sep 2025
Niven Numbers (Long)
Liibe
97
493ms
25 Sep 2025
Niven Numbers (Long)
nwellnhof
80
488ms
25 Sep 2025
Niven Numbers (Long)
Shanethegamer
93
460ms
25 Sep 2025
Niven Numbers (Long)
dokutan
93
494ms
24 Sep 2025
Niven Numbers (Long)
eMGeeneer
131
387ms
18 Sep 2025
Niven Numbers (Long)
Zstr25
163
413ms
10 Sep 2025
Niven Numbers (Long)
KaLuAnFo
133
447ms
9 Aug 2025
Niven Numbers (Long)
Apataras
123
411ms
21 Jul 2025
Niven Numbers (Long)
yoshykai
130
428ms
9 Apr 2025
Niven Numbers (Long)
kevinnaviapaiva
246
385ms
24 Feb 2025
Niven Numbers (Long)
GeneralFabian
145
463ms
4 Dec 2024
Niven Numbers (Long)
yashima
135
444ms
20 Oct 2024
Niven Numbers (Long)
Mabeloid
9,047
395ms
22 Sep 2024
Niven Numbers (Long)
althryenix
149
414ms
7 Jan 2024
Niven Numbers (Long)
epic-programmer-guy
142
407ms
20 Dec 2023
Niven Numbers (Long)
bac0id
131
415ms
26 Sep 2023
Niven Numbers (Long)
crizin
134
411ms
10 Sep 2023
Niven Numbers (Long)
msbranicky
145
404ms
8 Sep 2023
Niven Numbers (Long)
MiranDaniel
154
445ms
2 Sep 2023
Niven Numbers (Long)
bwat2
151
441ms
8 May 2023
Niven Numbers (Long)
inventshah
120
401ms
12 Jan 2023
Niven Numbers (Long)
retrohun
9,047
400ms
28 Dec 2022
Niven Numbers (Long)
astdefu
182
433ms
14 Dec 2022
Niven Numbers (Long)
ToxicP1e
199
418ms
8 Nov 2022
Niven Numbers (Long)
josh-h-90
158
452ms
9 Sep 2022
Niven Numbers (Long)
selketdaly
137
438ms
9 Sep 2022
Niven Numbers (Long)
KrausRaus
130
426ms
9 Sep 2022
Niven Numbers (Long)
eshilo-draper
153
443ms
4 Sep 2022
Niven Numbers (Long)
primo-ppcg
118
406ms
4 Sep 2022
Niven Numbers (Long)
Antonio-Vel
130
413ms
20 Aug 2022
Niven Numbers (Long)
Leftykap
130
394ms
20 Aug 2022
Niven Numbers (Long)
rotary-o
117
437ms
15 Aug 2022
Niven Numbers (Long)
GrayJoKing
118
412ms
14 Aug 2022
Niven Numbers (Long)
KatieLG-Transpiler
7,536
472ms
8 Aug 2022