Cody

Problems

1 – 13 of 13
Problem Title
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Solvers
Difficulty

Problem 986. Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration

Created by: Everett Rubel

Tags permutations, reverse, flip

1

11

Problem 44751. Lights Out 1 - 5x5, 3 moves

Created by: goc3

Tags game, logic, flip

5

22

Problem 44752. Lights Out 2 - 5x5, 4 moves

Created by: goc3

Tags game, logic, flip

1

18

Problem 44753. Lights Out 3 - 5x5, 6 moves

Created by: goc3

Tags game, logic, flip

1

16

Problem 44755. Lights Out 4 - 5x5, 8 moves

Created by: goc3

Tags game, logic, flip

4

14

Problem 44759. Lights Out 7 - 5x5, x moves

Created by: goc3

Tags game, logic, flip

2

15

Problem 44760. Lights Out 8 - 5x5, light-only solution? I

Created by: goc3

Tags game, logic, flip

2

12

Problem 44761. Lights Out 9 - 5x5, light-only solution? II

Created by: goc3

Tags game, logic, flip

1

11

Problem 44764. Lights Out 10 - 5x5, with wrapping, 6 moves

Created by: goc3

Tags game, logic, flip

2

11

Problem 44766. Lights Out 12 - 5x5, three stages, <7 moves

Created by: goc3

Tags game, logic, flip

0

8

Problem 44767. Lights Out 13 - 5x5, three stages, x moves

Created by: goc3

Tags game, logic, flip

1

7

Problem 44769. Lights Out 14 - 5x5, four stages, x moves

Created by: goc3

Tags game, logic, flip

1

7

Problem 44776. Lights Out 15 - 5x5, broken buttons I

Created by: goc3

Tags game, logic, flip

0

8
1 – 13 of 13