Queen's Tour/Examples/3 x 3

Example of Queen's Tour

As can be seen, the queen's tour on a $3 \times 3$ chessboard can be achieved in $2 \times 3 - 2 = 4$ moves.

However, the queen needs to go outside the $3 \times 3$ chessboard in order to do it.

Sources

• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Answers: $416$. Sinking the Fishing-Boats