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. Why not try and solve it ahead of time?
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12 Days of Christmas
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99 Bottles of Beer
Abundant Numbers
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Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
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
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
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Ulam Sequence
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><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
iogii
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
ZuzuScript
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Alphabetic Numbers
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
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
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
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Ulam Sequence
Hole
Golfer
Bytes
Time
Submitted
Morse Encoder
bziman
226
438ms
5 hours ago
PalindromemordnilaP
DialFrost
161
386ms
5 hours ago
N Queens
DialFrost
203
382ms
5 hours ago
Look and Say
DialFrost
140
376ms
6 hours ago
Gijswijt’s Sequence
DialFrost
🥇
106
1,692ms
6 hours ago
brainfuck
DialFrost
243
381ms
6 hours ago
Sierpiński Triangle
bziman
114
376ms
10 hours ago
Nim
h3ra993huskp
187
372ms
10 hours ago
Nim
dokutan
199
469ms
25 hours ago
Day of Week
ethanlally
🥇
80
615ms
45 hours ago
𝑒
ethanlally
🥉
110
375ms
47 hours ago
Arithmetic Numbers
bziman
104
425ms
2 days ago
ASCII Table
bziman
156
375ms
3 days ago
Taxicab Numbers
bziman
126
560ms
3 days ago
Minesweeper
Joseph-Regruth_HON
406
491ms
3 days ago
Pernicious Numbers
JOrE20
🥇
60
386ms
3 days ago
Diamonds
kmathis22
145
414ms
3 days ago
Hexdump
bziman
271
445ms
4 days ago
𝑒
reflogedoc
119
453ms
4 days ago
Divisors
kmathis22
87
524ms
4 days ago
γ
retrohun
1,028
344ms
4 days ago
λ
JOrE20
1,028
523ms
4 days ago
Sudoku (Fill-in)
kmathis22
643
559ms
4 days ago
Gray Code Decoder
DialFrost
🥇
83
399ms
5 days ago
Niven Numbers
albanian-laundromat
65
339ms
5 days ago
QR Decoder
edsrzf
174
428ms
5 days ago
Catalan’s Constant
ethanlally
🥈
172
408ms
5 days ago
ROT13
ethanlally
119
432ms
5 days ago
Forsyth–Edwards Notation
ethanlally
158
387ms
5 days ago
Ordinal Numbers
ethanlally
119
407ms
5 days ago
Emirp Numbers
JayXon
🥇
100
394ms
6 days ago
Fibonacci
bziman
58
398ms
6 days ago
Fibonacci
albanian-laundromat
🥇
57
366ms
6 days ago
ISBN
bidger
245
359ms
7 days ago
Spelling Numbers
DialFrost
402
376ms
7 days ago
Spelling Numbers
Steffan153
💎
205
430ms
7 days ago
ROT13
bidger
233
363ms
8 days ago
Fractions
bidger
245
422ms
8 days ago
Diamonds
ethanlally
🥉
112
416ms
8 days ago
99 Bottles of Beer
ethanlally
286
379ms
8 days ago
Prime Numbers (Long)
ethanlally
77
446ms
8 days ago
Prime Numbers
ethanlally
71
431ms
8 days ago
Odious Numbers (Long)
ethanlally
69
418ms
8 days ago
Evil Numbers (Long)
ethanlally
68
426ms
8 days ago
Odious Numbers
ethanlally
62
396ms
8 days ago
Evil Numbers
ethanlally
61
431ms
8 days ago
Multitap Input
ethanlally
🥈
154
426ms
8 days ago
Arabic to Roman
ethanlally
187
455ms
8 days ago
Fizz Buzz
scpchicken
🥇
89
449ms
9 days ago
Niven Numbers (Long)
ethanlally
80
402ms
9 days ago
Quine
ethanlally
🥇
102
398ms
9 days ago
Niven Numbers
ethanlally
66
391ms
9 days ago
Ascending Primes
ethanlally
99
758ms
9 days ago
Transpose Sentence
ethanlally
138
505ms
9 days ago
Farey Sequence
ethanlally
89
421ms
9 days ago
Collatz
kmathis22
🥉
89
400ms
9 days ago
Ten-pin Bowling
kmathis22
277
452ms
9 days ago
Card Number Validation
ethanlally
125
480ms
9 days ago
Emirp Numbers (Long)
ethanlally
125
375ms
9 days ago
Tongue-twisters
Mukundan314
🥇
309
387ms
10 days ago
Emirp Numbers
ethanlally
🥇
100
390ms
10 days ago
Fizz Buzz
ethanlally
🥇
89
372ms
10 days ago
Tutorial
ethanlally
122
746ms
10 days ago
N Queens
ethanlally
181
405ms
10 days ago
Catalan Numbers
ethanlally
🥇
119
459ms
10 days ago
Partition Numbers
ethanlally
101
377ms
10 days ago
τ
ethanlally
148
468ms
10 days ago
π
ethanlally
148
417ms
10 days ago
Rectangle Fill
Shanethegamer
212
476ms
11 days ago
Number Spiral
Orsailius
239
630ms
12 days ago
Kaprekar Numbers
scpchicken
93
916ms
12 days ago
Connect Four
aksyristos
1,358
530ms
12 days ago
Transpose Sentence
edsrzf
117
494ms
13 days ago
Pangram Grep
Orsailius
115
445ms
13 days ago
Tutorial
JOrE20
85
664ms
13 days ago
Transpose Sentence
sean-niemann
🥇
113
437ms
14 days ago
Connect Four
msbranicky
725
520ms
14 days ago
Inventory Sequence
Orsailius
131
408ms
14 days ago
Pernicious Numbers (Long)
JOrE20
83
467ms
14 days ago
Connect Four
JOrE20
3,883
418ms
14 days ago
Proximity Grid
edsrzf
🥇
147
2,184ms
15 days ago
Tic-tac-toe
edsrzf
124
545ms
15 days ago
Reverse Polish Notation
Orsailius
330
478ms
15 days ago
99 Bottles of Beer
RealBen9
336
416ms
16 days ago
Multitap Input
kmathis22
190
396ms
16 days ago
τ
Orsailius
374
476ms
16 days ago
Foo Fizz Buzz Bar
reflogedoc
131
411ms
16 days ago
Arithmetic Numbers
MrGagnonHPS
131
486ms
16 days ago
Transpose Sentence
kmathis22
168
355ms
16 days ago
99 Bottles of Beer
MrGagnonHPS
315
400ms
16 days ago
Game of Life
kmathis22
212
358ms
16 days ago
12 Days of Christmas
MrGagnonHPS
603
380ms
16 days ago
Rule 110
kmathis22
212
428ms
16 days ago
Connect Four
kmathis22
350
463ms
16 days ago
Morse Encoder
kmathis22
244
436ms
17 days ago
Arabic to Roman
kmathis22
212
483ms
17 days ago
Roman to Arabic
kmathis22
233
446ms
17 days ago
Cubes
reflogedoc
💎
220
442ms
17 days ago
Emirp Numbers (Long)
kmathis22
124
384ms
17 days ago
Emirp Numbers
kmathis22
124
380ms
17 days ago