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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Arabic to Roman
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Arrows
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Billiards
brainfuck
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Card Number Validation
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Catalan’s Constant
Christmas Trees
Collatz
Connect Four
Continued Fractions
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
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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
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Intersection
Inventory Sequence
ISBN
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ln 2
Look and Say
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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
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p-adic Expansion
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QR Encoder
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Tutorial
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Hole
Golfer
Chars
Time
Submitted
Happy Numbers
FreeFull
123
142ms
22 days ago
Happy Numbers
Haksell
127
138ms
30 May 2026
Happy Numbers
vang1ong7ang
87
141ms
26 Apr 2026
Happy Numbers
Steffan153
🥇
67
144ms
15 Apr 2026
Happy Numbers
kumavale
🥇
67
132ms
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Happy Numbers
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125
132ms
5 Apr 2026
Happy Numbers
fantaize
290
138ms
10 Mar 2026
Happy Numbers
ian-h-chamberlain
126
140ms
4 Dec 2025
Happy Numbers
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121
135ms
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Happy Numbers
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150
179ms
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Happy Numbers
snoozingnewt
88
131ms
29 Nov 2025
Happy Numbers
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128
124ms
22 Nov 2025
Happy Numbers
Laellekoenig
133
146ms
3 Nov 2025
Happy Numbers
webmiche
129
134ms
3 Nov 2025
Happy Numbers
Mabeloid
121
128ms
31 Oct 2025
Happy Numbers
Pale-Vessel
144
143ms
23 Sep 2025
Happy Numbers
dokutan
90
134ms
23 Jul 2025
Happy Numbers
Natanaelel
115
174ms
23 Jul 2025
Happy Numbers
sean-niemann
87
131ms
6 Jun 2025
Happy Numbers
pogwolfe
134
139ms
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Happy Numbers
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133
135ms
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Happy Numbers
ovs-code
87
132ms
20 Apr 2025
Happy Numbers
acotis
87
143ms
15 Apr 2025
Happy Numbers
DialFrost
87
137ms
4 Apr 2025
Happy Numbers
edsrzf
87
142ms
4 Mar 2025
Happy Numbers
JunkIce
90
130ms
23 Feb 2025
Happy Numbers
emgordon154
87
139ms
18 Feb 2025
Happy Numbers
The3gs
115
133ms
29 Nov 2024
Happy Numbers
pardouin
86
148ms
24 Aug 2024
Happy Numbers
lynn
87
130ms
7 Jul 2024
Happy Numbers
HumanoidCPU
127
115ms
3 May 2024
Happy Numbers
mousetail
118
150ms
15 Jan 2024
Happy Numbers
Yewzir
119
135ms
14 Jan 2024
Happy Numbers
Eugen-str
261
186ms
31 Oct 2023
Happy Numbers
stefangimmillaro
76
132ms
4 Oct 2023
Happy Numbers
elgan65536
85
136ms
22 Sep 2023
Happy Numbers
msbranicky
129
119ms
9 Sep 2023
Happy Numbers
MeWhenI
119
141ms
9 May 2023
Happy Numbers
kgodara
88
130ms
11 Mar 2023
Happy Numbers
zt14427
160
117ms
4 Mar 2023
Happy Numbers
retrohun
127
126ms
27 Dec 2022
Happy Numbers
klixel
127
118ms
5 Dec 2022
Happy Numbers
wiebecommajonas
158
142ms
30 Nov 2022
Happy Numbers
jared-hughes
88
129ms
10 Nov 2022
Happy Numbers
andersk
68
126ms
22 Oct 2022
Happy Numbers
Re-Adventures
123
153ms
27 Aug 2022
Happy Numbers
KatieLG-Transpiler
161
117ms
24 Jun 2022
Happy Numbers
gbxdl
122
140ms
14 Jun 2022
Happy Numbers
scpchicken
127
132ms
17 May 2022
Happy Numbers
prplz
86
132ms
30 Apr 2022
Happy Numbers
JGDoerrer
139
141ms
5 Feb 2022
Happy Numbers
primo-ppcg
69
129ms
14 Jan 2022
Happy Numbers
JayXon
🥇
67
129ms
14 Jan 2022
Happy Numbers
Lydxn
🥇
67
140ms
13 Jan 2022
Happy Numbers
Shanethegamer
119
133ms
13 Jan 2022
Happy Numbers
mokymok
160
122ms
8 Nov 2021
Happy Numbers
anna099
298
187ms
15 Aug 2021
Happy Numbers
dijs
422
137ms
24 Jun 2021
Happy Numbers
GrayJoKing
111
140ms
24 Mar 2021
Happy Numbers
jiaminglimjm
127
119ms
3 Jan 2021
Happy Numbers
btjones0
110
141ms
29 Dec 2020
Happy Numbers
neeldug
561
141ms
29 Jul 2020
Happy Numbers
antonymerle
317
147ms
19 May 2020
Happy Numbers
timvermeulen
116
135ms
6 Jan 2020
Happy Numbers
Aloso
144
130ms
4 Jan 2020
Happy Numbers
snakehand
220
170ms
4 Jan 2020
Happy Numbers
minno726
131
119ms
4 Jan 2020