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12 Days of Christmas
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Abundant Numbers
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Arabic to Roman
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Arrows
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ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Chess Move Validation
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
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Fractions
Game of Life
Gijswijt’s Sequence
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Gray Code Encoder
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Happy Numbers (Long)
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Intersection
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ISBN
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Leap Years
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Leyland Numbers
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
Nim
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
Ulam Sequence
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
Langton’s Ant
Lyndon Factorization
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
Hole
Golfer
Chars
Time
Submitted
Kaprekar Numbers
solisolu
131
4,558ms
8 days ago
Kaprekar Numbers
egu555
91
3,356ms
8 days ago
Kaprekar Numbers
christos-cantina-security
131
697ms
14 days ago
Kaprekar Numbers
jordansafer
223
18ms
18 days ago
Kaprekar Numbers
blaztoma
72
2,016ms
23 days ago
Kaprekar Numbers
Europe2048
146
4,516ms
31 Aug 2026
Kaprekar Numbers
LostSyntax21
76
4,109ms
20 Aug 2026
Kaprekar Numbers
jenova-gemini
188
12ms
19 Aug 2026
Kaprekar Numbers
retrohun
132
1,941ms
17 Aug 2026
Kaprekar Numbers
kasarino
240
4,595ms
12 Aug 2026
Kaprekar Numbers
Andrey2001
199
86ms
12 Aug 2026
Kaprekar Numbers
duckyluuk
162
4,970ms
18 Jul 2026
Kaprekar Numbers
4atj
78
3,832ms
17 Jul 2026
Kaprekar Numbers
zzh1996
89
1,928ms
20 Jun 2026
Kaprekar Numbers
edsrzf
83
3,999ms
16 Jun 2026
Kaprekar Numbers
CaedenHarper
84
4,047ms
11 Jun 2026
Kaprekar Numbers
yzhs
127
2,809ms
4 Jun 2026
Kaprekar Numbers
sisyphus-gpt
69
2,206ms
20 May 2026
Kaprekar Numbers
oaiqjuy
96
3,416ms
20 May 2026
Kaprekar Numbers
khvdm
🥇
61
2,200ms
10 May 2026
Kaprekar Numbers
lelbal
288
2,307ms
8 May 2026
Kaprekar Numbers
vang1ong7ang
96
3,432ms
25 Apr 2026
Kaprekar Numbers
scpchicken
95
3,388ms
22 Apr 2026
Kaprekar Numbers
Mikey-Beep
260
2,496ms
21 Apr 2026
Kaprekar Numbers
MeWhenI
103
3,657ms
16 Apr 2026
Kaprekar Numbers
FortuiteMan
192
10ms
13 Apr 2026
Kaprekar Numbers
commandz0
105
2,260ms
12 Apr 2026
Kaprekar Numbers
DialFrost
80
2,213ms
9 Apr 2026
Kaprekar Numbers
hiichbindermax
585
11ms
8 Apr 2026
Kaprekar Numbers
madeforlosers
139
2,145ms
7 Apr 2026
Kaprekar Numbers
aksyristos
98
3,522ms
27 Mar 2026
Kaprekar Numbers
ahmetdemirag
112
4,750ms
22 Mar 2026
Kaprekar Numbers
GrayJoKing
84
4,900ms
22 Mar 2026
Kaprekar Numbers
tomh1012
239
4,764ms
2 Mar 2026
Kaprekar Numbers
TheSecondComing123
452
10ms
25 Feb 2026
Kaprekar Numbers
JayXon
🥇
61
2,151ms
23 Feb 2026
Kaprekar Numbers
rotemkm
458
10ms
21 Feb 2026
Kaprekar Numbers
netfri25
458
10ms
21 Feb 2026
Kaprekar Numbers
darrenks
104
2,313ms
18 Feb 2026
Kaprekar Numbers
snoozingnewt
75
3,230ms
17 Feb 2026
Kaprekar Numbers
051
244
3,607ms
16 Feb 2026
Kaprekar Numbers
Flekay
75
3,265ms
15 Feb 2026
Kaprekar Numbers
Matter1024
140
3,757ms
14 Feb 2026
Kaprekar Numbers
Steffan153
80
4,976ms
11 Feb 2026
Kaprekar Numbers
ryyyn
100
4,180ms
7 Feb 2026
Kaprekar Numbers
sean-niemann
67
4,587ms
3 Feb 2026
Kaprekar Numbers
ZakkkkAttackkkk
165
4,593ms
1 Feb 2026
Kaprekar Numbers
plcc0
101
4,880ms
31 Jan 2026
Kaprekar Numbers
KatieLG
125
2,095ms
17 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
519
10ms
9 Jan 2026
Kaprekar Numbers
cros107
138
3,340ms
8 Jan 2026
Kaprekar Numbers
sunleonid
77
4,899ms
4 Jan 2026
Kaprekar Numbers
CornerMercury
78
4,946ms
28 Dec 2025
Kaprekar Numbers
kg583
68
4,169ms
27 Dec 2025
Kaprekar Numbers
CommandLeo
132
4,942ms
24 Dec 2025
Kaprekar Numbers
TheZwierzLF
314
1,996ms
18 Dec 2025
Kaprekar Numbers
bizy-coder
71
2,143ms
16 Dec 2025
Kaprekar Numbers
HumanoidCPU
254
11ms
7 Dec 2025
Kaprekar Numbers
Babafaba
93
2,823ms
25 Nov 2025
Kaprekar Numbers
ApoChagi
216
1,293ms
17 Nov 2025
Kaprekar Numbers
cthierfelder
260
3,168ms
13 Nov 2025
Kaprekar Numbers
qpwoeirut
100
4,271ms
7 Nov 2025
Kaprekar Numbers
JOrE20
452
11ms
6 Nov 2025
Kaprekar Numbers
webmiche
250
4,248ms
6 Nov 2025
Kaprekar Numbers
jameswmccarty
234
2,423ms
12 Oct 2025
Kaprekar Numbers
luuumine
123
4,733ms
8 Oct 2025
Kaprekar Numbers
StefanHabel
158
4,815ms
2 Oct 2025
Kaprekar Numbers
InigoK
143
1,292ms
19 Sep 2025
Kaprekar Numbers
muser-logiccpu
458
11ms
9 Aug 2025
Kaprekar Numbers
Unknownuserfrommars
452
10ms
5 Aug 2025
Kaprekar Numbers
BREMAUCY
147
4,705ms
26 Jul 2025
Kaprekar Numbers
vgamula
452
10ms
25 Jul 2025
Kaprekar Numbers
SectorCorruptor
452
10ms
24 Jul 2025
Kaprekar Numbers
SirBogman
89
4,510ms
22 Jul 2025
Kaprekar Numbers
KasperKivimaeki
457
10ms
15 Jul 2025
Kaprekar Numbers
anter69
76
3,772ms
14 Jul 2025
Kaprekar Numbers
fkantelberg
232
1,992ms
12 Jul 2025
Kaprekar Numbers
RaBa21
150
3,842ms
11 Jul 2025
Kaprekar Numbers
ndren
83
4,920ms
4 Jul 2025
Kaprekar Numbers
albanian-laundromat
92
2,569ms
22 Jun 2025
Kaprekar Numbers
hallvabo
🥉
64
4,909ms
11 Jun 2025
Kaprekar Numbers
rucin93
107
4,377ms
31 May 2025
Kaprekar Numbers
guilhem-roy
163
3,402ms
29 May 2025
Kaprekar Numbers
5cw
84
2,109ms
29 May 2025
Kaprekar Numbers
andrewjc2000
97
3,657ms
21 May 2025
Kaprekar Numbers
emgordon154
106
4,665ms
9 May 2025
Kaprekar Numbers
bricknellj
147
3,671ms
16 Apr 2025
Kaprekar Numbers
zacjl
71
2,288ms
10 Apr 2025
Kaprekar Numbers
moustave
452
9ms
9 Apr 2025
Kaprekar Numbers
calebaitken
144
2,670ms
9 Apr 2025
Kaprekar Numbers
Jaydosu
232
4,833ms
9 Apr 2025
Kaprekar Numbers
rollershutter
279
2,200ms
8 Apr 2025
Kaprekar Numbers
kevinnaviapaiva
293
4,941ms
13 Feb 2025
Kaprekar Numbers
sciencejiho
915
10ms
12 Feb 2025
Kaprekar Numbers
CLOStrophobic
356
4,570ms
9 Feb 2025
Kaprekar Numbers
m-tkach
86
3,294ms
4 Feb 2025
Kaprekar Numbers
dokutan
154
1,651ms
4 Feb 2025
Kaprekar Numbers
mathisfun271
452
10ms
25 Jan 2025
Kaprekar Numbers
croc54
170
2,750ms
9 Jan 2025
Kaprekar Numbers
maxgodfrey2004
280
2,520ms
4 Jan 2025