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hole will go live in approximately
19 hours
. Why not try and solve it ahead of time?
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brainfuck
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Poker
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Proximity Grid
QR Decoder
Quine
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Reversi
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Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
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Star Wars GPT
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Time Distance
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Topological Sort
Transpose Sentence
Trinomial Triangle
United States
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Van Eck Sequence
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
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Floyd-Steinberg Dithering
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Minesweeper
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p-adic Expansion
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D
Dart
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Janet
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VimL
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05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
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All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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
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
Morse Decoder
Morse Encoder
Musical Chords
N Queens
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)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Ascending Primes
HumanoidCPU
711
27ms
3 days ago
Prime Numbers
iczelia
16
14ms
6 days ago
Tutorial
Babafaba
64
15ms
15 days ago
Mandelbrot
ovs-code
61
104ms
22 Sep 2025
Tutorial
retrohun
109
16ms
19 Sep 2025
Hilbert Curve
ovs-code
79
14ms
15 Sep 2025
Tutorial
snoozingnewt
42
15ms
15 Sep 2025
Fizz Buzz
snoozingnewt
45
14ms
14 Sep 2025
Tutorial
ndren
109
16ms
5 Sep 2025
Fizz Buzz
madex
41
14ms
3 Sep 2025
Fizz Buzz
CaedenHarper
41
14ms
28 Aug 2025
Tutorial
Vexxter9
109
19ms
21 Aug 2025
Niven Numbers
hugoferreira
23
14ms
18 Aug 2025
Prime Numbers
HumanoidCPU
120
14ms
2 Aug 2025
π
Ralac07
1,006
14ms
28 Jul 2025
Kolakoski Constant
ovs-code
45
105ms
17 Jul 2025
Fizz Buzz
dokutan
41
14ms
15 Jul 2025
Topological Sort
ovs-code
58
92ms
14 Jul 2025
Tutorial
Bpc-CPU
109
16ms
12 Jul 2025
Quine
RYSF13
25
14ms
10 Jul 2025
Gijswijt’s Sequence
ovs-code
32
1,896ms
8 Jul 2025
Trinomial Triangle
ovs-code
20
14ms
4 Jul 2025
Mandelbrot
HumanoidCPU
3,525
34ms
30 Jun 2025
99 Bottles of Beer
TheDrawingCoder-Gamer
260
15ms
29 Jun 2025
Tutorial
TheDrawingCoder-Gamer
64
16ms
29 Jun 2025
Star Wars Opening Crawl
ovs-code
151
14ms
25 Jun 2025
λ
ovs-code
192
3,014ms
24 Jun 2025
Evil Numbers
YonYon2
36
13ms
24 Jun 2025
12 Days of Christmas
YonYon2
482
14ms
23 Jun 2025
γ
ovs-code
152
4,101ms
23 Jun 2025
SI Units
ovs-code
391
32ms
22 Jun 2025
United States
ovs-code
86
15ms
21 Jun 2025
Zodiac Signs
ovs-code
83
40ms
21 Jun 2025
Sudoku
ovs-code
169
135ms
21 Jun 2025
Sudoku (Fill-in)
ovs-code
94
4,394ms
21 Jun 2025
12 Days of Christmas
ovs-code
415
14ms
21 Jun 2025
Spelling Numbers
ovs-code
246
259ms
21 Jun 2025
Time Distance
ovs-code
169
27ms
21 Jun 2025
Ascending Primes
ovs-code
39
1,454ms
21 Jun 2025
Rock-paper-scissors-Spock-lizard
ovs-code
144
15ms
20 Jun 2025
Reversi
ovs-code
90
14ms
20 Jun 2025
Musical Chords
ovs-code
75
22ms
20 Jun 2025
Repeating Decimals
ovs-code
98
86ms
19 Jun 2025
QR Decoder
ovs-code
92
14ms
19 Jun 2025
Rijndael S-box
ovs-code
97
25ms
18 Jun 2025
Polyominoes
ovs-code
56
468ms
17 Jun 2025
Morse Encoder
ovs-code
114
14ms
17 Jun 2025
Morse Decoder
ovs-code
123
14ms
17 Jun 2025
Fizz Buzz
YonYon2
39
14ms
17 Jun 2025
Maze
ovs-code
90
106ms
17 Jun 2025
ln 2
ovs-code
63
457ms
17 Jun 2025
Forsyth–Edwards Notation
ovs-code
73
14ms
17 Jun 2025
DFA Simulator
ovs-code
98
19ms
17 Jun 2025
CSS Colors
ovs-code
662
15ms
17 Jun 2025
Tutorial
YonYon2
109
21ms
17 Jun 2025
Emojify
ovs-code
69
14ms
16 Jun 2025
Catalan’s Constant
ovs-code
649
15ms
16 Jun 2025
Arrows
ovs-code
82
16ms
16 Jun 2025
Tutorial
edsrzf
42
16ms
13 Jun 2025
Rule 110
ovs-code
39
14ms
13 Jun 2025
Seven Segment
ovs-code
64
14ms
13 Jun 2025
Factorial Factorisation
ovs-code
51
24ms
13 Jun 2025
Tongue-twisters
ovs-code
306
14ms
13 Jun 2025
Zeckendorf Representation
ovs-code
62
16ms
13 Jun 2025
√2
ovs-code
71
2,088ms
13 Jun 2025
φ
ovs-code
69
4,285ms
13 Jun 2025
Proximity Grid
ovs-code
84
128ms
13 Jun 2025
Game of Life
ovs-code
59
15ms
13 Jun 2025
Card Number Validation
ovs-code
51
16ms
13 Jun 2025
N Queens
ovs-code
47
15ms
11 Jun 2025
Cubes
ovs-code
76
15ms
11 Jun 2025
Transpose Sentence
ovs-code
43
15ms
8 Jun 2025
Tic-tac-toe
ovs-code
64
63ms
8 Jun 2025
Ten-pin Bowling
ovs-code
78
14ms
8 Jun 2025
Star Wars GPT
ovs-code
71
15ms
8 Jun 2025