The
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hole will go live in approximately
22 hours
. Why not try and solve it ahead of time?
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brainfuck
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Emojify
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Factorial Factorisation
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Number Spiral
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Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
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Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
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Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
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Star Wars GPT
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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
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γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
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Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
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Highly Composite Numbers
Minesweeper
NFA Simulator
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p-adic Expansion
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D
Dart
Elixir
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Factor
Forth
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Janet
Java
JavaScript
jq
Julia
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sed
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V
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
Vyxal
Hole
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
ASCII Table
ian-h-chamberlain
179
39ms
6 hours ago
Tower of Hanoi
edsrzf
81
43ms
6 hours ago
Tutorial
Openstreetmapler
207
48ms
7 hours ago
Christmas Trees
ian-h-chamberlain
145
40ms
9 hours ago
Tower of Hanoi
kg583
78
39ms
21 hours ago
Tower of Hanoi
Shanethegamer
3,586
41ms
23 hours ago
Catalan Numbers
snoozingnewt
80
44ms
26 hours ago
Abundant Numbers
ian-h-chamberlain
106
41ms
31 hours ago
Abundant Numbers (Long)
ian-h-chamberlain
107
42ms
31 hours ago
Arrows
kg583
🥈
176
156ms
2 days ago
Medal Tally
kg583
💎
157
67ms
2 days ago
Medal Tally
edsrzf
🥈
158
73ms
2 days ago
Levenshtein Distance
edsrzf
💎
158
94ms
3 days ago
Minesweeper
edsrzf
177
2,367ms
4 days ago
Levenshtein Distance
kg583
🥈
161
91ms
4 days ago
brainfuck
kg583
💎
189
102ms
4 days ago
Minesweeper
kg583
198
48ms
4 days ago
Trinomial Triangle
dokutan
1,100
38ms
6 days ago
Odious Numbers (Long)
Babafaba
125
42ms
6 days ago
Odious Numbers
Babafaba
125
39ms
6 days ago
Evil Numbers (Long)
Babafaba
128
42ms
6 days ago
Evil Numbers
Babafaba
126
44ms
6 days ago
Diamonds
edsrzf
🥇
103
40ms
6 days ago
Morse Encoder
ian-h-chamberlain
348
45ms
9 days ago
Pernicious Numbers
snoozingnewt
92
40ms
10 days ago
Emirp Numbers (Long)
ian-h-chamberlain
205
350ms
10 days ago
Emirp Numbers
ian-h-chamberlain
107
51ms
10 days ago
Niven Numbers (Long)
ian-h-chamberlain
112
54ms
10 days ago
Niven Numbers
ian-h-chamberlain
100
45ms
10 days ago
Prime Numbers
ian-h-chamberlain
74
57ms
10 days ago
Prime Numbers (Long)
ian-h-chamberlain
95
318ms
10 days ago
π
ian-h-chamberlain
540
42ms
11 days ago
Fractions
ian-h-chamberlain
90
45ms
11 days ago
Leap Years
ian-h-chamberlain
123
50ms
11 days ago
Fizz Buzz
ian-h-chamberlain
125
47ms
11 days ago
Foo Fizz Buzz Bar
ian-h-chamberlain
167
50ms
11 days ago
Arabic to Roman
snoozingnewt
🥇
57
43ms
12 days ago
Arabic to Roman
ian-h-chamberlain
🥇
57
56ms
12 days ago
Divisors
ian-h-chamberlain
100
67ms
13 days ago
Foo Fizz Buzz Bar
snoozingnewt
248
53ms
14 days ago
Hilbert Curve
snoozingnewt
🥈
826
43ms
14 days ago
Tutorial
luuumine
207
64ms
14 days ago
Tutorial
Babafaba
207
52ms
15 days ago
Farey Sequence
snoozingnewt
173
39ms
16 days ago
Smith Numbers
snoozingnewt
289
277ms
17 days ago
Van Eck Sequence
snoozingnewt
164
50ms
17 days ago
Inventory Sequence
snoozingnewt
307
55ms
17 days ago
Fizz Buzz
h3ra993huskp
142
41ms
17 days ago
Fibonacci
jacekwladzinski
63
46ms
20 days ago
Arithmetic Numbers
snoozingnewt
179
482ms
20 days ago
Abundant Numbers
snoozingnewt
139
39ms
21 days ago
Abundant Numbers (Long)
snoozingnewt
139
44ms
21 days ago
Kaprekar Numbers
edsrzf
122
2,633ms
21 days ago
Evil Numbers (Long)
ian-h-chamberlain
75
43ms
21 days ago
Odious Numbers (Long)
ian-h-chamberlain
74
41ms
21 days ago
Evil Numbers
ian-h-chamberlain
73
41ms
21 days ago
Odious Numbers
ian-h-chamberlain
72
44ms
21 days ago
Pernicious Numbers (Long)
snoozingnewt
146
46ms
21 days ago
Niven Numbers (Long)
jacekwladzinski
128
55ms
22 days ago
Niven Numbers
jacekwladzinski
126
43ms
22 days ago
Fizz Buzz
jacekwladzinski
153
48ms
22 days ago
Odious Numbers (Long)
jacekwladzinski
125
44ms
22 days ago
Odious Numbers
jacekwladzinski
83
45ms
22 days ago
Evil Numbers (Long)
jacekwladzinski
123
44ms
22 days ago
Evil Numbers
jacekwladzinski
121
44ms
22 days ago
Divisors
jacekwladzinski
107
47ms
22 days ago
Pernicious Numbers
Yax42
112
43ms
26 days ago
Scrambled Sort
kg583
🥈
173
51ms
26 days ago
Tutorial
ian-h-chamberlain
207
69ms
3 Oct 2025
Trinomial Triangle
DialFrost
🥉
81
44ms
2 Oct 2025
Pascal’s Triangle
snoozingnewt
184
42ms
1 Oct 2025
Trinomial Triangle
snoozingnewt
283
46ms
1 Oct 2025
Fibonacci
ian-h-chamberlain
72
43ms
30 Sep 2025
Trinomial Triangle
CaedenHarper
2,076
46ms
30 Sep 2025
Sudoku (Fill-in)
edsrzf
💎
244
63ms
30 Sep 2025