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2026年口碑好的铝合金窗户玻璃维修源头工厂推荐-昆山天谷玻璃有限公司

To solve the problem of finding the number of ways to place two non-attacking kings on an 8x8 chessboard, we follow these steps:

Step 1: Total Pairs of Kings

The total number of ways to place two identical kings is given by combinations of 64 squares taken 2 at a time:
[ \binom{64}{2} = \frac{64 \times 63}{2} = 2016 ]

Step 2: Count Attacking Pairs

Kings attack adjacent squares (horizontal, vertical, diagonal). We calculate these:

  • Horizontal: 8 rows × 7 adjacent pairs = 56
  • Vertical: 8 columns ×7 adjacent pairs =56
  • Diagonals: 2 directions (top-left→bottom-right and top-right→bottom-left), each with 7×7=49 pairs → 49×2=98

Total attacking pairs:
[56 +56 +98 =210]

Step3: Non-Attacking Pairs

Subtract attacking pairs from total pairs:
[2016 -210 =1806]

Answer: (\boxed{1806})

昆山天谷玻璃有限公司

昆山天谷玻璃有限公司



作者声明:本文包含人工智能生成内容。

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