17 rooks on a Chessboard

17 rooks are placed on an 8 times 8 chessboard. Prove that there are at least 3 rooks that do not threaten each other.

Chessboard Puzzles Part 2 - Independence

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combinatorics - Independence problem: one rook and maximum number

3 3/4 Commander Staunton Chess Pieces (per color or half set - 17

6.20 Breakout Rooms: Rooks on a Chessboard Write a

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Do you trade your rook for the knight and bishop in this situation

*Educational purposes: By playing chess, you can enhance your thinking logic ability, develop tactical strategy ability, improve intelligence, and

Chess Set Wooden Chess Set 15''/17'' Chessboard for Competitions, Portable Foldable Chessboard, Strategic Board Game for 2 Players Board Games (Color

Play old chess tree on an ivory checkered board, white and rook