On the modular n-queen problem
β Scribed by Olof Heden
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 408 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Heden, O., On the modular n-queen problem, Discrete Mathematics 102 (1992) 155-161.
Let M(n) denote the maximum number of queens on a modular chessboard such that no two attack each other. We prove that if 4 or 6 divides n then M(n) c n -2 and if gcd(n, 24) = 8 then M(n) 2 n -2. We also show that M(24) = 22.
π SIMILAR VOLUMES
## Received 19 Ianu~y 19% WC show that the modular n-queen prohlcm has a solutton if and only if gcd(n, 6,) = I. We give a class of solutions for all thcsc n.
We prove that if q + 1 E 8 or 16 (mod 24) then, for any integer n in the interval (q2 + 1)/2 + 3 < n < (Sq' + 4q + 7)/8, there is a maximal partial spread of size n in PG(3, q).
A configuration of queens on an m X m chessboard is said to dominate the board if every square either contains a queen or is attacked by a queen. The configuration is said to be non-attacking if no queen attacks another queen. Let f(m) and g(m) equal the minimum number of queens and the minimum numb