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Hardest Brain Teaser Puzzles: Stone on Stone Puzzles

by Marcus White
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Current price ₹931.00
Original price ₹1,034.00
Original price ₹1,034.00
Original price ₹1,034.00
(-10%)
₹931.00
Current price ₹931.00

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Book cover type: Paperback
  • ISBN13: 9781723978623
  • Binding: Paperback
  • Subject: N/A
  • Publisher: Independently Published
  • Publisher Imprint: Independently Published
  • Publication Date:
  • Pages: 116
  • Original Price: GBP 8.17
  • Language: English
  • Edition: N/A
  • Item Weight: 182 grams
  • BISAC Subject(s): Logic & Brain Teasers

Stone on Stone is a logic puzzle invented by Nikoli. A rectangular or square grid is divided into regions. The goal is to blacken some cells of a grid ("stones") according to the following rules:
- All black cells in a region must be connected horizontally or vertically.
- A cell with a number indicates how many cells in the region must be blackened.
- In regions without a number any amount of cells may be blackened (at least one).
- When two cells are orthogonally adjacent across a region boundary, at least one cell must be white.
- If all stones "fall down", they must cover exactly the bottom half of the grid.

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