The Tic-tac-toe hole will go live in approximately . Why not try and solve it ahead of time?

Recent Solutions

Hole Golfer Bytes Submitted
DFA Simulator kg583 💎 218
Trinomial Triangle HumanoidCPU 2,075
Hexdump edsrzf 💎 173
Reversi kg583 💎 211
QR Decoder kg583 💎 240
QR Decoder AlephSquirrel 🥈 247
Partition Numbers CLOStrophobic 229
Game of Life CLOStrophobic 265
Morse Decoder CLOStrophobic 🥉 256
Medal Tally CLOStrophobic 287
Niven Numbers (Long) edsrzf 106
Tongue-twisters CLOStrophobic 409
Card Number Validation CLOStrophobic 134
Factorial Factorisation CLOStrophobic 🥈 129
Fibonacci edsrzf 🥇 48
Fractions edsrzf 🥇 73
Lucky Numbers CaedenHarper 125
Tic-tac-toe kg583 140
Sudoku (Fill-in) kg583 💎 365
Sudoku kg583 💎 537
N Queens kg583 💎 154
Time Distance kg583 🥈 277
Forsyth–Edwards Notation edsrzf 170
Emirp Numbers (Long) kg583 🥈 124
ASCII Table CLOStrophobic 141
Forsyth–Edwards Notation CLOStrophobic 🥇 152
Transpose Sentence AlephSquirrel 🥈 129
Ten-pin Bowling CLOStrophobic 382
γ CLOStrophobic 213
Prime Numbers (Long) AlephSquirrel 67
Time Distance CLOStrophobic 335
Reverse Polish Notation CLOStrophobic 🥈 137
Prime Numbers (Long) Lydxn 🥇 56
Ascending Primes kg583 🥈 125
Prime Numbers (Long) kg583 🥇 56
Prime Numbers (Long) primo-ppcg 🥇 56
Reverse Polish Notation AlephSquirrel 🥉 140
Gijswijt’s Sequence CLOStrophobic 172
Reverse Polish Notation edsrzf 144
Tic-tac-toe CLOStrophobic 134
Tic-tac-toe AlephSquirrel 172
Tutorial edsrzf 70
Farey Sequence zacjl 🥇 79
Farey Sequence primo-ppcg 🥇 79
Rock-paper-scissors-Spock-lizard CLOStrophobic 316
Farey Sequence CLOStrophobic 🥉 80
Farey Sequence edsrzf 92
Star Wars Opening Crawl kg583 💎 382
Zeckendorf Representation kg583 💎 119
24 Game kg583 💎 352
Kaprekar Numbers CLOStrophobic 292
brainfuck CLOStrophobic 🥈 248
Catalan Numbers CaedenHarper 2,880
ASCII Table CaedenHarper 282
Tongue-twisters CaedenHarper 531
Ascending Primes CaedenHarper 520
Gijswijt’s Sequence CaedenHarper 2,008
Emirp Numbers (Long) CaedenHarper 1,164
Sierpiński Triangle CaedenHarper 562
Diamonds CaedenHarper 1,111
Leyland Numbers CaedenHarper 894
Niven Numbers (Long) CaedenHarper 7,446
Pascal’s Triangle CaedenHarper 777
Evil Numbers (Long) CaedenHarper 1,958
Pernicious Numbers (Long) CaedenHarper 20,670
Recamán CaedenHarper 905
Fibonacci CaedenHarper 142
Foo Fizz Buzz Bar CaedenHarper 5,727
Collatz CaedenHarper 3,234
Van Eck Sequence CaedenHarper 2,563
Odious Numbers (Long) CaedenHarper 1,953
Leap Years CaedenHarper 738
Divisors CaedenHarper 1,174
Abundant Numbers (Long) CaedenHarper 972
Niven Numbers CaedenHarper 99