Crossword Book |
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| Author:
| Siddique, Akram |
| ISBN: | 979-8-3758-6251-4 |
| Publication Date: | Feb 2023 |
| Publisher: | Independently Published
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| Book Format: | Paperback |
| List Price: | USD $24.00 |
Book Description:
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Another tradition in puzzle design (in North America, India, and Britain particularly) is that the grid should have 180-degree rotational (also known as "radial") symmetry, so that its pattern appears the same if the paper is turned upside down. Most puzzle designs also require that all white cells be orthogonally contiguous (that is, connected in one mass through shared sides, to form a single polyomino).
Another tradition in puzzle design (in North America, India, and Britain particularly) is that the grid should have 180-degree rotational (also known as "radial") symmetry, so that its pattern appears the same if the paper is turned upside down. Most puzzle designs also require that all white cells be orthogonally contiguous (that is, connected in one mass through shared sides, to form a single polyomino).