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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
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
Sudoku (Fill-in)
ryyyn
182
269ms
25 hours ago
Sudoku (Fill-in)
snoozingnewt
329
13ms
4 days ago
Sudoku (Fill-in)
Babafaba
232
114ms
4 days ago
Sudoku (Fill-in)
KatieLG
204
23ms
11 days ago
Sudoku (Fill-in)
bzijlema
178
284ms
22 days ago
Sudoku (Fill-in)
BREMAUCY
189
47ms
26 days ago
Sudoku (Fill-in)
emgordon154
184
939ms
2 Oct 2025
Sudoku (Fill-in)
qpwoeirut
287
33ms
21 Sep 2025
Sudoku (Fill-in)
blaztoma
337
34ms
18 Sep 2025
Sudoku (Fill-in)
albanian-laundromat
144
263ms
16 Sep 2025
Sudoku (Fill-in)
CaedenHarper
310
78ms
15 Sep 2025
Sudoku (Fill-in)
cros107
215
273ms
8 Sep 2025
Sudoku (Fill-in)
HumanoidCPU
416
17ms
6 Sep 2025
Sudoku (Fill-in)
InigoK
182
904ms
29 Aug 2025
Sudoku (Fill-in)
sean-niemann
120
81ms
26 Aug 2025
Sudoku (Fill-in)
Zhenyu-Bo
1,900
27ms
1 Aug 2025
Sudoku (Fill-in)
ndren
267
26ms
14 Jul 2025
Sudoku (Fill-in)
plcc0
154
131ms
22 Apr 2025
Sudoku (Fill-in)
evan18c
3,070
36ms
18 Apr 2025
Sudoku (Fill-in)
Keegan-T
1,431
14ms
18 Apr 2025
Sudoku (Fill-in)
mbittner20
564
61ms
14 Apr 2025
Sudoku (Fill-in)
madex
405
38ms
21 Mar 2025
Sudoku (Fill-in)
zt14427
4,377
45ms
18 Mar 2025
Sudoku (Fill-in)
jameswmccarty
1,205
26ms
13 Mar 2025
Sudoku (Fill-in)
ahmetdemirag
245
867ms
4 Mar 2025
Sudoku (Fill-in)
ovs-code
170
229ms
9 Feb 2025
Sudoku (Fill-in)
ComputerKWasTaken
705
19ms
23 Jan 2025
Sudoku (Fill-in)
croc54
358
76ms
18 Jan 2025
Sudoku (Fill-in)
lifthrasiir
133
82ms
2 Dec 2024
Sudoku (Fill-in)
theadamabrams
784
73ms
28 Nov 2024
Sudoku (Fill-in)
wh3n3v3r
240
28ms
18 Nov 2024
Sudoku (Fill-in)
Natanaelel
240
17ms
11 Nov 2024
Sudoku (Fill-in)
xyangst
760
15ms
12 Oct 2024
Sudoku (Fill-in)
JesseNoEyes
982
62ms
20 Sep 2024
Sudoku (Fill-in)
jatloe
122
690ms
16 Sep 2024
Sudoku (Fill-in)
Rubiksmath
188
109ms
2 Sep 2024
Sudoku (Fill-in)
duckyluuk
126
97ms
29 Aug 2024
Sudoku (Fill-in)
dokutan
490
48ms
3 Aug 2024
Sudoku (Fill-in)
pardouin
🥉
108
152ms
12 Jul 2024
Sudoku (Fill-in)
Steffan153
117
54ms
11 Jul 2024
Sudoku (Fill-in)
kg583
129
338ms
9 Jun 2024
Sudoku (Fill-in)
jtaxen
2,165
35ms
10 May 2024
Sudoku (Fill-in)
neel11235813
148
62ms
3 Apr 2024
Sudoku (Fill-in)
AlephSquirrel
316
49ms
30 Mar 2024
Sudoku (Fill-in)
davecame
269
432ms
20 Mar 2024
Sudoku (Fill-in)
anter69
146
946ms
15 Mar 2024
Sudoku (Fill-in)
5cw
164
264ms
11 Mar 2024
Sudoku (Fill-in)
mathisfun271
470
32ms
6 Mar 2024
Sudoku (Fill-in)
DialFrost
136
263ms
14 Feb 2024
Sudoku (Fill-in)
rsgray
468
659ms
7 Feb 2024
Sudoku (Fill-in)
SirBogman
117
216ms
22 Jan 2024
Sudoku (Fill-in)
yuchuehw
410
16ms
17 Jan 2024
Sudoku (Fill-in)
hallvabo
109
76ms
31 Dec 2023
Sudoku (Fill-in)
commandblockguy
358
34ms
31 Oct 2023
Sudoku (Fill-in)
FlorianCassayre
250
393ms
18 Sep 2023
Sudoku (Fill-in)
StefanHabel
297
204ms
4 Sep 2023
Sudoku (Fill-in)
SB-945
164
150ms
31 Aug 2023
Sudoku (Fill-in)
stefangimmillaro
217
550ms
17 Aug 2023
Sudoku (Fill-in)
FortuiteMan
203
152ms
6 Aug 2023
Sudoku (Fill-in)
bizy-coder
188
651ms
4 Aug 2023
Sudoku (Fill-in)
AlexanderFair
270
296ms
31 Jul 2023
Sudoku (Fill-in)
msbranicky
704
25ms
26 Jul 2023
Sudoku (Fill-in)
janbehrens
441
426ms
17 Jun 2023
Sudoku (Fill-in)
Yewzir
567
2,258ms
11 Jun 2023
Sudoku (Fill-in)
TaserTheFox
428
2,480ms
23 May 2023
Sudoku (Fill-in)
eiburns
441
31ms
10 May 2023
Sudoku (Fill-in)
adamnielson42
263
220ms
25 Apr 2023
Sudoku (Fill-in)
galloj
620
33ms
24 Feb 2023
Sudoku (Fill-in)
aksyristos
632
37ms
27 Jan 2023
Sudoku (Fill-in)
scpchicken
300
82ms
7 Jan 2023
Sudoku (Fill-in)
prplz
225
208ms
6 Jan 2023
Sudoku (Fill-in)
za3k
793
64ms
14 Dec 2022
Sudoku (Fill-in)
QuincyNash
547
760ms
4 Dec 2022
Sudoku (Fill-in)
jakobkordez
178
42ms
2 Nov 2022
Sudoku (Fill-in)
bricknellj
178
35ms
2 Nov 2022