Battleships

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Rules[edit]

Battleships Example.png Battleships Example Solution.png

Locate the indicated fleet in the grid. Each piece of a ship occupies a single cell. A cell that does not contain a ship piece is considered "sea". Ships can be rotated. Ships do not touch each other, not even diagonally (that is, if two ship pieces are in adjacent cells, they must be part of the same ship). The contents of some cells are given for you. Each number to the right and bottom of the grid reveals the number of ship pieces that must be located in that row or column (including any that might be given for you).

(Rules and example (standard fleet) from PGP IB)

Rule variations[edit]

  • In most puzzles the fleet consists of 1 battleship (1x4), 2 cruisers (1x3), 3 destroyers (1x2) and 4 submarines (1x1). This set of ships is often called the standard fleet.
  • Smaller fleet of 1 cruiser, 2 destroyers and 3 submarines is commmon for a fleet in example puzzles.

History of the puzzle[edit]

Pencil-and-paper game version of Battleships traces dates from World War I.[1] Solitaire version is invented by Jaime Poniachik (Argentina) and was first featured in 1982 in the Argentine magazine Humor & Juegos under the name "Batalla Naval." [2]

First Battleships with round ship figures appeared on WPC 1992. Puzzles were by Peter Gordon (USA) and Mike Shenk (USA). First Battleships with incomplete row information is from WPC 1993.

Variants[edit]

See list of Battleships variants.

Appearances in the past WPCs[edit]

Listed here are appearances of classic to almost-classic Battleships. For variants, see list of Battleships variants#Appearances in the past WPCs.

References[edit]