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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
Calendar
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
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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)
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
Connect Four
Continued Fractions
Crossword
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CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
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Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
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Tutorial
Hole
Golfer
Bytes
Time
Submitted
Sudoku
aksyristos
1,087
2ms
6 hours ago
Sudoku
aksyristos
661
55ms
6 hours ago
Sudoku
snoozingnewt
399
1,076ms
9 hours ago
Sudoku
snoozingnewt
407
35ms
9 hours ago
Sudoku
Steffan153
💎
298
2,993ms
31 hours ago
Sudoku
JOrE20
🥉
1,240
78ms
34 hours ago
Sudoku
JOrE20
526
27ms
34 hours ago
Sudoku
Flekay
407
163ms
34 hours ago
Sudoku
edsrzf
🥈
313
2,396ms
39 hours ago
Sudoku
JOrE20
🥉
1,409
60ms
3 days ago
Sudoku
kg583
💎
524
797ms
6 days ago
Sudoku
dokutan
739
1,184ms
6 days ago
Sudoku
Steffan153
349
12ms
9 days ago
Sudoku
Steffan153
💎
259
80ms
9 days ago
Sudoku
snoozingnewt
🥉
604
243ms
10 days ago
Sudoku
dokutan
772
87ms
12 days ago
Sudoku
elgan65536
785
283ms
13 days ago
Sudoku
RobertHoeh
1,347
3,358ms
21 days ago
Sudoku
blaztoma
💎
557
143ms
24 days ago
Sudoku
amazingalek
1,474
456ms
27 days ago
Sudoku
ovs-code
💎
283
3,686ms
27 days ago
Sudoku
bitsandbeyond
💎
275
1,413ms
22 Jan 2026
Sudoku
zhaohm14
485
25ms
16 Jan 2026
Sudoku
snoozingnewt
🥈
559
136ms
15 Jan 2026
Sudoku
blaztoma
493
45ms
11 Jan 2026
Sudoku
MiffOttah
925
485ms
9 Jan 2026
Sudoku
sean-niemann
💎
536
45ms
6 Jan 2026
Sudoku
dokutan
🥈
857
38ms
27 Dec 2025
Sudoku
dokutan
1,835
79ms
27 Dec 2025
Sudoku
emgordon154
389
50ms
26 Dec 2025
Sudoku
acotis
🥈
515
232ms
24 Dec 2025
Sudoku
canissimia
💎
317
1,881ms
22 Dec 2025
Sudoku
kmathis22
949
544ms
18 Dec 2025
Sudoku
kurkale6ka
1,151
24ms
15 Dec 2025
Sudoku
CornerMercury
467
26ms
14 Dec 2025
Sudoku
ryyyn
404
332ms
3 Dec 2025
Sudoku
alexsave
1,094
1,183ms
3 Dec 2025
Sudoku
dokutan
752
19ms
2 Dec 2025
Sudoku
Lv0Sys
478
15ms
2 Dec 2025
Sudoku
Lv0Sys
590
20ms
2 Dec 2025
Sudoku
h3ra993huskp
980
824ms
30 Nov 2025
Sudoku
AlephSquirrel
🥉
812
315ms
27 Nov 2025
Sudoku
ndren
560
36ms
26 Nov 2025
Sudoku
KatieLG
919
534ms
21 Nov 2025
Sudoku
snoozingnewt
🥉
660
4,008ms
21 Nov 2025
Sudoku
targrik
🥉
583
40ms
19 Nov 2025
Sudoku
KasperKivimaeki
🥉
396
3,079ms
18 Nov 2025
Sudoku
Yax42
523
512ms
16 Nov 2025
Sudoku
MeWhenI
🥈
517
1,068ms
7 Nov 2025
Sudoku
emgordon154
💎
215
100ms
7 Nov 2025
Sudoku
albanian-laundromat
🥉
399
2,617ms
7 Nov 2025
Sudoku
lynn
🥉
528
235ms
6 Nov 2025
Sudoku
Natanaelel
446
11ms
5 Nov 2025
Sudoku
CaedenHarper
852
307ms
4 Nov 2025
Sudoku
madeforlosers
624
23ms
3 Nov 2025
Sudoku
robin-scragg
775
14ms
1 Nov 2025
Sudoku
CaedenHarper
484
1,046ms
31 Oct 2025
Sudoku
CaedenHarper
500
66ms
31 Oct 2025
Sudoku
Babafaba
687
1,247ms
26 Oct 2025
Sudoku
Babafaba
702
532ms
26 Oct 2025
Sudoku
CaedenHarper
1,014
538ms
21 Oct 2025
Sudoku
albanian-laundromat
🦄
975
1,953ms
18 Oct 2025
Sudoku
InigoK
505
56ms
9 Oct 2025
Sudoku
CaedenHarper
1,039
763ms
8 Oct 2025
Sudoku
stefangimmillaro
548
727ms
6 Oct 2025
Sudoku
BREMAUCY
597
19ms
4 Oct 2025
Sudoku
pardouin
295
201ms
3 Oct 2025
Sudoku
bzijlema
403
801ms
2 Oct 2025
Sudoku
CaedenHarper
547
4,554ms
27 Sep 2025
Sudoku
JayXon
💎
385
653ms
27 Sep 2025
Sudoku
sean-niemann
🥉
523
813ms
24 Sep 2025
Sudoku
KatieLG
1,559
410ms
24 Sep 2025
Sudoku
AlexKent3141
940
3ms
17 Sep 2025
Sudoku
albanian-laundromat
474
14ms
16 Sep 2025
Sudoku
albanian-laundromat
476
1,554ms
15 Sep 2025
Sudoku
cros107
479
119ms
7 Sep 2025
Sudoku
pardouin
330
1,834ms
6 Sep 2025
Sudoku
HumanoidCPU
659
1,061ms
6 Sep 2025
Sudoku
HumanoidCPU
670
12ms
6 Sep 2025
Sudoku
albanian-laundromat
💎
523
30ms
6 Sep 2025