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Kaprekar Numbers
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. Why not try and solve it ahead of time?
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Golfers
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
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Arrows
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brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
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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
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
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
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
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
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Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Go
GolfScript
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lisp
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
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VimL
Wren
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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
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
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
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
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
Rule 110
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Time Distance
Tongue-twisters
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Hole
Golfer
Bytes
Submitted
𝑒
DialFrost
🥉
153
21 hours ago
QR Decoder
MostParsingVex
🥈
483
2 days ago
Seven Segment
m-tkach
190
2 days ago
Niven Numbers
HumanoidCPU
496
3 days ago
Divisors
error256
99
4 days ago
Card Number Validation
emplv
🥈
145
5 days ago
Pascal’s Triangle
anter69
997
5 days ago
Quine
edsrzf
🥇
92
6 days ago
24 Game
Shanethegamer
17,894
7 days ago
Emirp Numbers (Long)
Shanethegamer
2,128
7 days ago
Niven Numbers (Long)
pardouin
100
8 days ago
Fizz Buzz
Europe2048
159
9 days ago
Polyominoes
Shanethegamer
8,030
10 days ago
Fibonacci
dokutan
81
10 days ago
Rijndael S-box
dokutan
837
10 days ago
Rijndael S-box
Shanethegamer
846
12 days ago
ASCII Table
qewdweftr4g
482
13 days ago
12 Days of Christmas
Shanethegamer
2,813
13 days ago
Tongue-twisters
dokutan
562
13 days ago
Recamán
dokutan
924
13 days ago
Sierpiński Triangle
dokutan
346
13 days ago
Fizz Buzz
aliakseikalosha
173
15 days ago
Quine
CaedenHarper
103
15 days ago
Number Spiral
qewdweftr4g
445
17 days ago
Arabic to Roman
MostParsingVex
🥉
89
18 days ago
Roman to Arabic
MostParsingVex
🥇
76
19 days ago
Pascal’s Triangle
dokutan
884
19 days ago
Roman to Arabic
snoozingnewt
78
21 days ago
Card Number Validation
m-tkach
💎
144
21 days ago
N Queens
MostParsingVex
🥉
311
21 days ago
Cubes
dokutan
1,282
22 days ago
Prime Numbers
dokutan
116
22 days ago
Prime Numbers (Long)
dokutan
118
22 days ago
Divisors
dokutan
105
22 days ago
Pernicious Numbers (Long)
dokutan
124
22 days ago
Abundant Numbers
dokutan
120
22 days ago
Abundant Numbers (Long)
dokutan
121
22 days ago
Arithmetic Numbers
dokutan
149
22 days ago
Pernicious Numbers
dokutan
97
22 days ago
Arabic to Roman
error256
104
22 days ago
Odious Numbers (Long)
dokutan
72
22 days ago
Evil Numbers
dokutan
71
22 days ago
Evil Numbers (Long)
dokutan
73
22 days ago
Odious Numbers
dokutan
71
22 days ago
Leap Years
dokutan
79
22 days ago
Diamonds
dokutan
636
22 days ago
ASCII Table
dokutan
342
22 days ago
Kolakoski Sequence
dokutan
509
22 days ago
Christmas Trees
dokutan
436
22 days ago
Gijswijt’s Sequence
dokutan
🥉
377
22 days ago
Niven Numbers
dokutan
160
22 days ago
Polyominoes
dokutan
🥈
1,703
22 days ago
United States
KatieLG
2,528
25 days ago
Spelling Numbers
KatieLG
65,509
25 days ago
SI Units
KatieLG
🥈
39,014
25 days ago
Rock-paper-scissors-Spock-lizard
KatieLG
1,535
25 days ago
Ordinal Numbers
KatieLG
45,826
25 days ago
Musical Chords
KatieLG
🥉
19,276
25 days ago
CSS Colors
KatieLG
8,028
25 days ago
Emojify
KatieLG
1,181
25 days ago
Arithmetic Numbers
KatieLG
176
25 days ago
Card Number Validation
MeWhenI
🥉
162
27 days ago
ISBN
MeWhenI
199
27 days ago
PalindromemordnilaP
MostParsingVex
🥉
165
30 Sep 2024
Proximity Grid
MostParsingVex
💎
260
28 Sep 2024
Sudoku (Fill-in)
MostParsingVex
💎
370
28 Sep 2024
Sudoku
MostParsingVex
💎
694
27 Sep 2024
Reversi
MostParsingVex
🥈
248
27 Sep 2024
N Queens
m-tkach
💎
197
27 Sep 2024
PalindromemordnilaP
m-tkach
💎
145
27 Sep 2024
PalindromemordnilaP
error256
🥈
156
24 Sep 2024
Fibonacci
pardouin
70
23 Sep 2024
Kolakoski Sequence
Mabeloid
2,018
21 Sep 2024
ln 2
Mabeloid
🥉
1,021
20 Sep 2024
Kolakoski Constant
Mabeloid
1,021
20 Sep 2024