How many mutually non-attacking, non-knight pieces can we place on an m × n chessboard?

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Title: How many mutually non-attacking, non-knight pieces can we place on an m × n chessboard?
Authors: Chatham, Doug1 (AUTHOR)
Source: Recreational Mathematics Magazine. Jun2026, Vol. 13 Issue 22, p21-30. 10p.
Database: Mathematics Source
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PubType: Academic Journal
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  Data: How many mutually non-attacking, non-knight pieces can we place on an m × n chessboard?
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  Data: <searchLink fieldCode="JN" term="%22Recreational+Mathematics+Magazine%22">Recreational Mathematics Magazine</searchLink>. Jun2026, Vol. 13 Issue 22, p21-30. 10p.
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      – Type: doi
        Value: 10.2478/rmm-2026-0002
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 21
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      – TitleFull: How many mutually non-attacking, non-knight pieces can we place on an m × n chessboard?
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              M: 06
              Text: Jun2026
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              Y: 2026
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