User Will.Octagon.Gibson - Puzzling Stack Exchange

34 votes

3 answers

4k views

How can the doctor measure out a dose (dissolved in water) of exactly 10% of a tablet?

asked Sep 22, 2024 at 20:13

32 votes

5 answers

4k views

Can you tile a 25x25 square with a mixture of 2x2 squares and 3x3 squares?

asked Apr 18, 2024 at 5:31

32 votes

1 answer

4k views

Are you radical enough to solve this SURDOKU?

asked Jul 8, 2024 at 21:12

32 votes

2 answers

2k views

What is the color of the final disc(s)?

asked Jul 31, 2024 at 18:40

30 votes

1 answer

3k views

Seth and Cain take turns picking numbers from 1 to 50. Who wins?

asked Aug 25, 2024 at 8:09

28 votes

1 answer

2k views

Where is the large cook promotion?

asked Apr 9, 2024 at 0:27

27 votes

8 answers

5k views

Make the number 606 50 percent bigger

asked Apr 21, 2024 at 8:43

27 votes

2 answers

2k views

12 piece cube packing puzzle

asked Jul 5, 2023 at 6:01

26 votes

3 answers

1k views

White (king and 2 bishops) vs Black (king and 1 knight). White to play and mate in 2

asked Sep 26, 2024 at 11:12

25 votes

11 answers

3k views

Prove that it is always possible for them to join the line so that the number of men in front of them is equal to the number of women behind them

asked Oct 1, 2024 at 7:17

25 votes

1 answer

695 views

A pair of Find-the-stars puzzles

asked yesterday

25 votes

3 answers

3k views

Twenty-four trees in eighteen rows of four

asked May 30, 2022 at 21:11

25 votes

3 answers

2k views

Tiling a square with right-angled triangles

asked Feb 1, 2024 at 0:05

24 votes

3 answers

3k views

How do you measure exactly 31 minutes by burning the ropes?

asked Sep 27, 2024 at 7:11

23 votes

3 answers

4k views

Starting with a pile of 1,001 rocks, discarding some and splitting up the piles, can you eventually have all piles with exactly 3 rocks?

asked Mar 16 at 3:10

23 votes

7 answers

3k views

You are at a crossroads with five roads leading away from it

asked Dec 31, 2023 at 4:57

23 votes

1 answer

3k views

What’s the highest salary the greedy king can arrange for himself?

asked Jun 30, 2024 at 6:52

22 votes

2 answers

2k views

Can you find a 3x3 white square somewhere in this relatively prime graph?

asked Sep 19, 2023 at 8:51

21 votes

3 answers

2k views

White to move and mate in one

asked Nov 3, 2024 at 7:38

20 votes

1 answer

2k views

Removing either 1 or a prime number of checkers each turn. Who wins?

asked Mar 5 at 4:01

20 votes

7 answers

2k views

Dissect the figure into two congruent parts.

asked Apr 22 at 20:18

20 votes

1 answer

2k views

Reducing π to zero (again)

asked Sep 22, 2023 at 22:10

19 votes

2 answers

1k views

Can you pack these tetracubes to form a rectangular block with at least one odd side length?

asked May 27, 2023 at 18:38

19 votes

3 answers

1k views

Can you get all the coins no matter where they are placed?

asked Apr 17 at 20:21

19 votes

1 answer

978 views

Cover the 7x7 square with the 12 L-shaped pieces

asked Oct 23, 2024 at 6:13

18 votes

1 answer

2k views

Place some or all of the White Chess pieces on a chessboard in such a way that none of them can legally move

asked Sep 25, 2024 at 10:13

18 votes

4 answers

3k views

Coloring of a 5 x 5 chessboard

asked Jan 28, 2024 at 23:56

18 votes

4 answers

2k views

Make the three products equal and as large as possible

asked Mar 29, 2024 at 4:06

18 votes

4 answers

1k views

Maximizing the common value of both sides of an equation

asked Aug 30, 2024 at 8:05

17 votes

1 answer

1k views

Helen helped Liam become best carpenter north of _?

asked Oct 12, 2023 at 7:06

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243 Questions

How can the doctor measure out a dose (dissolved in water) of exactly 10% of a tablet?

Can you tile a 25x25 square with a mixture of 2x2 squares and 3x3 squares?

Are you radical enough to solve this SURDOKU?

What is the color of the final disc(s)?

Seth and Cain take turns picking numbers from 1 to 50. Who wins?

Where is the large cook promotion?

Make the number 606 50 percent bigger

12 piece cube packing puzzle

White (king and 2 bishops) vs Black (king and 1 knight). White to play and mate in 2

Prove that it is always possible for them to join the line so that the number of men in front of them is equal to the number of women behind them

A pair of Find-the-stars puzzles

Twenty-four trees in eighteen rows of four

Tiling a square with right-angled triangles

How do you measure exactly 31 minutes by burning the ropes?

Starting with a pile of 1,001 rocks, discarding some and splitting up the piles, can you eventually have all piles with exactly 3 rocks?

You are at a crossroads with five roads leading away from it

What’s the highest salary the greedy king can arrange for himself?

Can you find a 3x3 white square somewhere in this relatively prime graph?

White to move and mate in one

Removing either 1 or a prime number of checkers each turn. Who wins?

Dissect the figure into two congruent parts.

Reducing π to zero (again)

Can you pack these tetracubes to form a rectangular block with at least one odd side length?

Can you get all the coins no matter where they are placed?

Cover the 7x7 square with the 12 L-shaped pieces

Place some or all of the White Chess pieces on a chessboard in such a way that none of them can legally move

Coloring of a 5 x 5 chessboard

Make the three products equal and as large as possible

Maximizing the common value of both sides of an equation

Helen helped Liam become best carpenter north of _?