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
Fizz Buzz AlephSquirrel 79
Evil Numbers AlephSquirrel 38
Odious Numbers AlephSquirrel 35
Happy Numbers AlephSquirrel 51
Niven Numbers AlephSquirrel 42
Prime Numbers AlephSquirrel 32
Fibonacci AlephSquirrel 17
Tutorial AlephSquirrel 42
Tutorial CLOStrophobic 63
Tic-tac-toe MeWhenI 98
Fizz Buzz eebop 🥉 50
Tutorial Natanaelel 43
λ JunkIce 2,026
Tongue-twisters CaedenHarper 1,073
Ascending Primes CaedenHarper 1,223
Gijswijt’s Sequence CaedenHarper 5,999
Emirp Numbers (Long) CaedenHarper 2,791
Sierpiński Triangle CaedenHarper 977
Diamonds CaedenHarper 2,383
Leyland Numbers CaedenHarper 1,985
Niven Numbers (Long) CaedenHarper 17,951
Pascal’s Triangle CaedenHarper 1,577
Evil Numbers (Long) CaedenHarper 4,901
Catalan Numbers CaedenHarper 5,943
Pernicious Numbers (Long) CaedenHarper 49,827
Recamán CaedenHarper 2,293
Collatz CaedenHarper 8,451
Van Eck Sequence CaedenHarper 7,109
Odious Numbers (Long) CaedenHarper 4,889
Leap Years CaedenHarper 1,751
Divisors CaedenHarper 2,531
Abundant Numbers (Long) CaedenHarper 2,419
Niven Numbers CaedenHarper 247
Fibonacci CaedenHarper 329
Foo Fizz Buzz Bar CaedenHarper 13,437
Inventory Sequence CaedenHarper 7,245
Prime Numbers CaedenHarper 191
Evil Numbers CaedenHarper 189
Odious Numbers CaedenHarper 197
Lucky Numbers CaedenHarper 11,639
Pernicious Numbers CaedenHarper 269
Smith Numbers CaedenHarper 4,399
Arithmetic Numbers CaedenHarper 90,659
Happy Numbers CaedenHarper 277
12 Days of Christmas CaedenHarper 4,963
Emirp Numbers CaedenHarper 343
Happy Numbers (Long) CaedenHarper 1,389
Prime Numbers (Long) CaedenHarper 14,353
Christmas Trees CaedenHarper 1,199
Kolakoski Sequence CaedenHarper 4,001
Vampire Numbers CaedenHarper 2,451
Look and Say CaedenHarper 2,597
Abundant Numbers CaedenHarper 417
Kaprekar Numbers CaedenHarper 1,015
Farey Sequence CaedenHarper 10,257
ASCII Table CaedenHarper 579
Number Spiral CaedenHarper 619
99 Bottles of Beer CaedenHarper 24,367
Cubes CaedenHarper 7,149
Rule 110 CaedenHarper 26,151
N Queens CaedenHarper 2,787
24 Game CaedenHarper 27,587
Polyominoes CaedenHarper 9,659
𝑒 CaedenHarper 2,007
√2 CaedenHarper 2,007
φ CaedenHarper 2,007
τ CaedenHarper 2,007
π CaedenHarper 2,007
λ CaedenHarper 2,007
γ CaedenHarper 2,007
Rijndael S-box CaedenHarper 1,567
ln 2 CaedenHarper 2,007
Kolakoski Constant CaedenHarper 2,007
Factorial Factorisation CaedenHarper 1,725
Catalan’s Constant CaedenHarper 2,007