Skip to main content
Bubbler's user avatar
Bubbler's user avatar
Bubbler's user avatar
Bubbler
  • Member for 3 years, 8 months
  • Last seen this week
  • UTC+9
5 votes
1 answer
356 views

Filling a rectangular grid with holes using tetrominoes

14 votes
2 answers
1k views

The Ultimate Battle of two players

11 votes
2 answers
1k views

New record for minimally clued 7x7 Hidato (now with 6 clues!)

6 votes
1 answer
171 views

A hard(?) 15-X puzzle

13 votes
2 answers
235 views

Create a 15-X puzzle with a unique solution

6 votes
1 answer
199 views

5x5 Hidato with 4 single-digit clues

11 votes
3 answers
662 views

New record for minimally clued 5x5 Hidato

4 votes
1 answer
175 views

Curious statements about black cells on a grid

12 votes
1 answer
2k views

Add rules to Minesweeper until you can start with nothing

6 votes
2 answers
201 views

River crossing cats and dogs

13 votes
1 answer
1k views

1+3 Towers of Hanoi

5 votes
1 answer
435 views

Counting Tic-Tac-Toe draws on larger grids

28 votes
2 answers
2k views

A logician's Bingo

9 votes
2 answers
527 views

Christmas tree LITSO

12 votes
1 answer
1k views

A hidden number everyone is talking about

3 votes
1 answer
244 views

Cube Connect Challenges

9 votes
1 answer
395 views

Double Choco: I love myself

15 votes
1 answer
452 views

Sum-until-1 Fillomino: Odds, Fibonacci, and Pi

10 votes
2 answers
408 views

Trio Tapa: Introduction

4 votes
2 answers
332 views

Finding the root of a basic sequence

13 votes
7 answers
980 views

Minimize the longest King chain on a 5x5 binary board

15 votes
5 answers
2k views

Domino tiling on 8x8 checkerboard with four squares removed

6 votes
2 answers
308 views

Pandigital fraction sum that evaluates to 1

18 votes
3 answers
2k views

What makes this polynomial a square number?

16 votes
3 answers
1k views

The maximum period of dancing program

7 votes
2 answers
454 views

Pentomino tiling on wrap-around 5x5 grids

9 votes
3 answers
416 views

A theorem about angles in the form of arctan(1/n)

6 votes
1 answer
204 views

Three-and-Two (Santoitchi variant): Confused Knights

13 votes
1 answer
492 views

Hetero-F(our|ive)-Cells

13 votes
1 answer
634 views

The tip of a colorful triangle