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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
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
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
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Snake
Sphenic Numbers
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Tutorial
Hole
Golfer
Chars
Time
Submitted
Sudoku
vang1ong7ang
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455
230ms
20 hours ago
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codereport
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153
38ms
21 hours ago
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391
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578
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519
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RobertHoeh
1,044
2,665ms
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369
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23 days ago
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snoozingnewt
💎
494
144ms
23 days ago
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madex
508
3ms
25 days ago
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kmathis22
537
638ms
25 days ago
Sudoku
edsrzf
🥈
755
64ms
2 Apr 2026
Sudoku
madeforlosers
289
31ms
31 Mar 2026
Sudoku
aksyristos
387
42ms
27 Mar 2026
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MeWhenI
💎
445
169ms
27 Mar 2026
Sudoku
janAkali
804
741ms
23 Mar 2026
Sudoku
blaztoma
329
44ms
15 Mar 2026
Sudoku
snoozingnewt
215
525ms
14 Mar 2026
Sudoku
snoozingnewt
219
42ms
14 Mar 2026
Sudoku
Flekay
387
41ms
10 Mar 2026
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Steffan153
195
483ms
26 Feb 2026
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ovs-code
🥈
239
42ms
23 Feb 2026
Sudoku
bitsandbeyond
💎
146
1,829ms
23 Feb 2026
Sudoku
JOrE20
546
31ms
21 Feb 2026
Sudoku
JOrE20
🥉
1,486
5ms
21 Feb 2026
Sudoku
JOrE20
🥈
1,020
148ms
21 Feb 2026
Sudoku
aksyristos
781
2ms
20 Feb 2026
Sudoku
Steffan153
💎
165
1,504ms
19 Feb 2026
Sudoku
JOrE20
🥉
936
71ms
19 Feb 2026
Sudoku
JOrE20
301
13ms
19 Feb 2026
Sudoku
edsrzf
🥈
170
1,937ms
19 Feb 2026
Sudoku
Steffan153
🥈
139
77ms
18 Feb 2026
Sudoku
JOrE20
🥈
1,105
60ms
17 Feb 2026
Sudoku
dokutan
400
630ms
14 Feb 2026
Sudoku
dokutan
409
107ms
8 Feb 2026
Sudoku
elgan65536
653
294ms
7 Feb 2026
Sudoku
blaztoma
🥈
509
142ms
27 Jan 2026
Sudoku
amazingalek
1,170
604ms
24 Jan 2026
Sudoku
ovs-code
🥉
276
3,456ms
24 Jan 2026
Sudoku
zhaohm14
435
49ms
16 Jan 2026
Sudoku
MiffOttah
623
485ms
9 Jan 2026
Sudoku
dokutan
944
72ms
27 Dec 2025
Sudoku
dokutan
💎
461
29ms
27 Dec 2025
Sudoku
emgordon154
341
46ms
26 Dec 2025
Sudoku
acotis
🥉
459
235ms
24 Dec 2025
Sudoku
kurkale6ka
841
18ms
15 Dec 2025
Sudoku
CornerMercury
213
39ms
14 Dec 2025
Sudoku
ryyyn
362
3,623ms
3 Dec 2025
Sudoku
alexsave
805
13ms
3 Dec 2025
Sudoku
dokutan
401
31ms
3 Dec 2025
Sudoku
Lv0Sys
436
21ms
2 Dec 2025
Sudoku
Lv0Sys
546
22ms
2 Dec 2025
Sudoku
h3ra993huskp
774
663ms
30 Nov 2025
Sudoku
snoozingnewt
💎
342
258ms
22 Nov 2025
Sudoku
KatieLG
🥉
617
534ms
21 Nov 2025
Sudoku
snoozingnewt
🥉
612
158ms
21 Nov 2025
Sudoku
targrik
🥉
515
29ms
19 Nov 2025
Sudoku
KasperKivimaeki
🥉
396
3,079ms
18 Nov 2025
Sudoku
Yax42
475
550ms
16 Nov 2025
Sudoku
MeWhenI
🥈
469
1,184ms
7 Nov 2025
Sudoku
albanian-laundromat
🥉
244
1,847ms
7 Nov 2025
Sudoku
lynn
484
231ms
6 Nov 2025
Sudoku
Natanaelel
382
11ms
5 Nov 2025
Sudoku
CaedenHarper
808
356ms
4 Nov 2025
Sudoku
robin-scragg
735
15ms
1 Nov 2025
Sudoku
CaedenHarper
440
1,154ms
31 Oct 2025
Sudoku
CaedenHarper
456
66ms
31 Oct 2025
Sudoku
Babafaba
372
3,627ms
26 Oct 2025
Sudoku
Babafaba
376
297ms
26 Oct 2025
Sudoku
CaedenHarper
964
500ms
21 Oct 2025
Sudoku
CaedenHarper
989
637ms
8 Oct 2025
Sudoku
KatieLG
291
546ms
6 Oct 2025
Sudoku
BREMAUCY
553
27ms
4 Oct 2025
Sudoku
pardouin
152
77ms
3 Oct 2025
Sudoku
bzijlema
399
766ms
2 Oct 2025
Sudoku
CaedenHarper
501
4,601ms
27 Sep 2025
Sudoku
JayXon
💎
385
714ms
27 Sep 2025
Sudoku
sean-niemann
🥉
475
791ms
24 Sep 2025
Sudoku
KatieLG
648
599ms
24 Sep 2025
Sudoku
AlexKent3141
892
3ms
17 Sep 2025
Sudoku
albanian-laundromat
262
22ms
16 Sep 2025
Sudoku
albanian-laundromat
264
537ms
12 Sep 2025
Sudoku
cros107
430
115ms
7 Sep 2025
Sudoku
pardouin
318
2,005ms
6 Sep 2025
Sudoku
HumanoidCPU
356
503ms
6 Sep 2025
Sudoku
HumanoidCPU
360
12ms
6 Sep 2025
Sudoku
commandz0
455
1,000ms
1 Sep 2025
Sudoku
CaedenHarper
623
18ms
31 Aug 2025
Sudoku
InigoK
286
70ms
29 Aug 2025
Sudoku
albanian-laundromat
💎
382
111ms
27 Aug 2025
Sudoku
KatieLG
1,744
206ms
25 Aug 2025