4PC Variants List - Chess Forums

3D Printable Hexchess 2 - 4-Player Chess Board - Borders and Tiles by Dalla Croce Studios

4 Player Chess - Chess Forums

How to play 4 Player Chess (Teams), Video

Four-player chess - Chess Forums

WE Games Four Player Chess Set

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New: 4 Player Chess on !? (Prototype) - Chess Forums

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Subject Matter Turing Test: Bughouse (4 player chess)

WE Games Four Player Chess Set, Chess Board for Team Chess, Combination Chess Game for Up to 4 Players, Unique Chess Sets for Adults and Kids, Roll Up