Type: a game.
Applicability: multiple.
What is needed: two pens and two pieces of checkered paper.
How many people is it designed for?: 2 people.
Dynamism: average.
Location: anywhere.

Description: Each player draws on his sheet of paper (sheets cannot be shown to each other) two 8x8 squares, numbering the columns from a to k, and the rows from 1 to 10:

The first field is your own field, and the second is the enemy’s field, where the player will hit with his blows. On the first field the player places ships: 1 four-cell, 2 three-cell, 3 two-cell, 4 one-cell. For example, like this:


In this case, ships cannot touch or touch each other. But they can rotate 90 degrees. The placement of ships is at the discretion of the player.

Purpose of the game– be the first to destroy all enemy ships.

After the ships are placed, they decide by lot who will start. The player who has been chosen places a point on his sheet of paper on the opponent’s field in some cell and names its coordinates, for example, d7. The second player places a point on his field where his ships are located, with these coordinates. If this cell belongs to a ship, then the player says “hit” if the ship still has undamaged cells, and “killed” if it was the last intact cell of the ship. If this cell is empty and does not contain a ship, then the player says “by.” If there was a ship there, then the dot turns into a cross for both players. If a player hits a ship, then he has the right to an additional shot, if he also hits it, then the right to an additional shot appears again, and so on. After a move, the other player shoots at the opponent's field. And so on until victory. Shown below are two moves: player one and player two.

And again Battleship, but this time about the classic school game, which is played on notebook paper. History has not preserved information about who and when invented this amazing game, but the fact that many generations of schoolchildren played it Soviet Union, it is a fact. Legends were made up about this game, poems were written, different variants battles and new rules. It is not surprising that the boom in Naval combat continues and even gains new momentum; now you can play not only with an opponent, but also with a computer, tablet and even with a phone...

Most recently, on our website, we described, and today we’ll talk about the classic rules of the game Sea Battle on paper. In the classic version of the game sea ​​battle two people play. To play, you will need two squared notebook pages and two pencils or pens. The players each take a piece of paper and a pen and sit down so that they cannot see each other’s pieces of paper - this is a real military secret and fate depends on the secrecy of the fleet’s positions the whole company. Next, players draw two squares measuring 10 by 10 cells and number the vertical side, and write the letters of the alphabet on the horizontal side. You should pay attention to the spelling of the same letters by two players, otherwise the game will be ruined. Of course, you can change the arrangement of letters and numbers, you can increase or decrease the size playing field, But prerequisite is that this must be done the same way for two players.

After the squares for future military operations have been drawn, you should hide them well from the eyes of your opponent and begin to arrange your fleet, but before that, carefully read the following rules:

• in the classic rules of the game “Sea Battle”, ships are positioned only horizontally or vertically and cannot be curved;
• in the classic game “Battleship”, ships cannot touch each other either at their sides or at their corners, there must be a distance of at least one cell between ships;
• In the classic game "Battleship", each player places ten (10) ships of different sizes:
  • 1 (one) four-cell battleship;
  • 2 (two) three-cell cruisers;
  • 3 (three) two-cell destroyers;
  • 4 (four) single-cell submarines or torpedo boats(whatever you like best).

Ships should be placed on the left square, and the right one will be used to mark your shooting, analyze the situation and fire at enemy ships. The figure shows an example of the arrangement of ships. Attention, if you decide to change the rules of the game to increase the number of ships, then you must also increase the size of the game squares, otherwise there simply will not be enough space to arrange the ships.

When the ships are positioned, the time comes to begin the naval battle and one of the admirals, according to the lot, fires his first shot. This is done like this: the player looks at the right square and selects any place available for a shot and names it out loud. For example: “e2” or “i9”. The second participant in the naval battle looks at his left square, where his ships are located, finds the indicated point and reports the result of the shot:

• by (miss) - if this point is empty, in this case both players mark a point at this place, which means that they have already shot at these coordinates and there is no ship there;
• wounded - if this is one of the places where the ship stands and this ship still has whole fragments of the hull, in this case a mark is made with a cross with the beginning of the lines in the corners of the square;
• killed (sank) - if in this place there is a one-cell submarine or another ship, in which all fragments of the hull are already damaged, in this case a cross is placed and the entire ship is surrounded by dots, because the ship is sunk, its coordinates are completely determined, and according to the rules of naval combat, no other ships can be located on adjacent cells. In this way, a mark is made and fire will no longer be fired at these coordinates.

Please note that according to the rules of the classic game of sea battle, the player who fired an effective shot and wounded or killed the enemy ship continues the game and fires another shot. He continues to fire until he misses. The game continues until all the ships of one of the fleets go to the bottom, that is, until one of the fleets is completely destroyed.

Attention, if you wish, you can change the rules of the game and add your own elements. For example, some people introduce one or two sea ​​mines. When hit by such a mine, the shooting player must name the coordinates of any of his unsunk ships. In addition, you can play with three players, then the players draw three squares and fire at one squadron at once, and then at the other. In addition, you should mark not only your own shots, but also those of your opponents when they shoot at each other. The introduction of new rules into the game will diversify it and make it more exciting, but these rules need to be carefully thought out and tested in practice.

In the following articles, we will definitely analyze tactical techniques for deploying fleets and the correct strategy for firing at an enemy squadron. Have a nice time.

On our website you can find others that you can play with your friends.

The game "Battleship" has been helping people pass the time during classes, lectures, lunch breaks, or just on cold winter evenings for more than 80 years. During this time, many generations have changed, but the game still remains relevant. Although it is being replaced by more modern and dynamic computer games, today it is almost impossible to find a schoolchild who does not know how to play sea battle and what it even is. I will tell you about the rules of the game, and also describe winning tactics. Let's look at how to play sea battle.

Rules of the game

Each player's playing field is a 10x10 square on which ships are placed. The field must contain numeric and alphabetic coordinates (vertical numbers are 1-10, and horizontally letters are from a to k). For the classic game, four one-cell ships (submarines), three two-cell ships (destroyers), two three-cell ships (cruisers) and one four-cell ship (battleship) are used. They are drawn inside the square. According to the rules, the ships should not touch each other. It is best to play on a sheet of paper with a square, because the drawing of ships is a circle of squares. One deck - one cell. Ships can be placed both horizontally and vertically. Next to his square, the player draws a second one, on which he marks “shots” at the enemy. When hitting an opponent's ship, a cross is placed on the opponent's field. The hit player fires another shot.

Violations

• The number of ships does not correspond to the rules
• The ships are located close to each other
• Changed field size
• Incorrect coordinates specified

Game process

• Players decide who will go first
• The player making the move names the coordinate where, in his opinion, the opponent's ship is located. For example, square A1.
• If he misses, the opponent must say “Miss!”; if he hits, “Hit,” “Wounded,” or “Killed,” depending on the size of the ship.
• The game continues until all the ships of one of the players are sunk.

How to win a sea battle

This strategy is one of many options for building a battle. Its essence lies in the fact that all large ships (from two to four cells) are located in one corner of the field and as compactly as possible. But single-celled ships are scattered throughout the rest of the field. As a result, your opponent will quickly find a grouping area of ​​large ships quite quickly and begin to mercilessly destroy them. At this moment he will feel like a real genius, but we know what the catch is. During the time that your opponent spends searching for small ships, you will most likely have time to understand his tactics and destroy most of the ships, thereby making him nervous. The rest is a matter of technique. This article talked about the rules, the process of the game and gave examples of winning tactics on how to win a sea battle. With the right approach, all of the above can serve as a good knowledge base for getting maximum pleasure from the game.

May 26, 2013 at 08:27 pm

Optimal algorithm for playing sea battle

• Algorithms

A couple of days ago, I was surprised to learn that some of my friends do not know how to play sea battle. Those. They, of course, know the rules, but they play somehow haphazardly and in the end they often lose. In this post I will try to outline the main ideas that will help improve your game.

Rules of the game

There are many options for naval combat, but we will consider the most common option with the following set of ships:

All listed ships must be placed on a square field of 10 by 10 cells, and the ships cannot touch either the corners or sides. The playing field itself is numbered from top to bottom, and the verticals are marked with Russian letters from “A” to “K” (the letters “Y” and “Y” are skipped).

An enemy field of similar size is drawn nearby. If there is a successful shot at the enemy ship, a cross is placed on the corresponding cell of the enemy field and a second shot is fired; if the shot is unsuccessful, a dot is placed in the corresponding cell and the turn goes to the enemy.

Optimal strategy

There is always an element of randomness in a naval battle game, but it can be kept to a minimum. Before moving directly to the search for the optimal strategy, it is necessary to voice one obvious thing: the probability of hitting an enemy ship is higher, the fewer unchecked cells are left on his field, similarly, the probability of hitting your ships is lower, the more unchecked cells are left on your field. That. To play effectively, you need to learn two things at once: optimal shooting at the enemy and optimal placement of your ships.

In the following explanation the following notation will be used:

Optimal shooting

The first and most obvious rule for optimal shooting is next rule: Do not shoot at cells directly surrounding the destroyed enemy ship.

In accordance with the notations adopted above, in the figure those cells on which unsuccessful shots have already been fired are marked in yellow, cells on which shots ended in hits are marked in red, and cells on which were not fired were marked in green, but it can be guaranteed that the ships there are no ships in them (there cannot be ships there, because according to the rules of the game, ships cannot touch).

The second rule immediately follows from the first rule: if you manage to knock out an enemy ship, you must immediately finish it off in order to get a list of guaranteed free cells as early as possible.

The third rule follows from the first two: you must first try to knock out the largest enemy ships. This rule may not be obvious to you, but if you think a little, you can easily notice that by destroying an enemy battleship, at best, we will immediately receive information about 14 guaranteed free cells, and by destroying a cruiser, only about 12.

That. The optimal shooting strategy can be reduced to a targeted search and destruction of the largest enemy ships. Unfortunately, it is not enough to formulate a strategy; it is necessary to propose a way to implement it.

First, let's look at a section of the playing field measuring 4 by 4 cells. If there is an enemy battleship in the area in question, then it is guaranteed to be knocked out in no more than 4 shots. To do this, you need to shoot so that there is exactly one checked cell on each horizontal and vertical line. All variants of such shooting are presented below (without taking into account reflections and rotations).

Among all these options, only the first two options are optimal on a 10 by 10 square field, guaranteeing a hit to the battleship in a maximum of 24 shots.

After the enemy battleship is destroyed, it is necessary to begin the search for cruisers, and then destroyers. In this case, as you already guessed, you can use a similar technique. Only now it is necessary to divide the field into squares with a side of 3 and 2 cells, respectively.

If you used the second strategy when searching for a battleship, then to search for cruisers and destroyers you need to shoot at the following fields (fields that you have already shot at when searching for a battleship are marked in green):

There is no optimal strategy for finding boats, so at the end of the game you have to rely mainly on luck.

Optimal placement of ships

The optimal ship placement strategy is in some ways the inverse of the optimal shooting strategy. When shooting, we tried to find the largest ships in order to reduce the number of cells that needed to be checked by guaranteeing free cells. This means that when placing ships, they must be placed in such a way that in case of their loss, the number of guaranteed free cells is minimized. As you remember, a battleship in the center of the field opens 14 fields for the enemy at once, but a battleship standing in the corner opens only 6 fields for the enemy:

Likewise, a cruiser standing in the corner opens only 6 instead of 12 fields. Thus, by placing large ships along the border of the field, you leave more space for boats. Because There is no strategy for finding boats, the enemy will have to shoot at random, and the more free fields you have left by the time you catch the boats, the harder it will be for the enemy to win.

Below are three ways to deploy large ships that leave plenty of room for boats (in blue):

Each of the above arrangements leaves exactly 60 free cells for boats, which means that the probability of accidentally getting into a boat is 0.066. For comparison, it’s worth giving a random arrangement of ships:

With this arrangement, only 21 cells remain for boats, which means that the probability of hitting a boat is already 0.19, i.e. almost 3 times higher.

In conclusion, I would like to say that you should not spend too much time playing naval battle. I especially want to warn you against playing during lectures. While I was sitting in Wabi-Sabi playing battleship with my girlfriend, a waitress walked by and said that she was quite good at playing because... I practiced a lot in pairs. Who knows what she would have worked like if she had listened to lectures in her time?

P.S. The comments absolutely correctly indicate that there were already similar publications on the hub; it would be wrong not to provide links to them.

Incredible popular game on paper. And although there are now special gaming kits for “Battleship”, as well as a lot of computer implementations, the classic version on a piece of paper remains the most popular.

The goal of the game is to sink the enemy's ships before he can sink yours.

Rules of the game "Battleship"

Two players play. Each of them needs a piece of paper (preferably checkered), a pencil or a pen. The game begins with preparing the field. Two squares of 10×10 cells are drawn on a piece of paper. On one of them they will deploy their ships, in the other they will “fire” on enemy ships.

The sides of the squares are signed with letters horizontally and numbers vertically. You need to agree in advance which letters will be written (the main debate arises whether or not to use the letter “Y”). By the way, in some schools, instead of the boring alphabet, they write the word “REPUBLIC” - it just contains 10 non-repeating letters. This is especially useful for those who have never mastered the alphabet.

Ship placement

Next, the deployment of fleets begins. Classic rules In naval combat they say that there should be 4 ships of one cell each (“single-deck” or “single-pipe”), 3 ships of 2 cells each, 2 of 3 cells each and one four-deck. All ships must be straight; curved or “diagonal” ones are not allowed. The ships are placed on the playing field in such a way that there is always a gap of one square between them, that is, they should not touch each other either with their sides or corners. In this case, ships can touch the edges of the field and occupy corners.

When the ships are placed, players take turns firing, calling the squares by their “coordinates”: “A1”, “B6”, etc. If a square is occupied by a ship or part of it, the opponent must respond “wounded” or “killed” (“sunk”). This cell is crossed out with a cross and you can take another shot. If there is no ship in the named cell, a dot is placed in the cell and the turn goes to the opponent.

The game is played until one of the players completely wins, that is, until all the ships are sunk.

At the end of the game, the loser can ask the winner to look at his arrangement of ships.

Mastery

If you think that sea battle is a game built solely on luck and chance, then you are mistaken. In fact, it contains both strategy and tactics, which we will talk about in conclusion. So - about tricks and various honest and not so honest methods of playing sea battle:

• First of all (and this is the most important thing!), you need to keep your sheet of ships so that the enemy cannot spy on your location;
• Be sure to keep a record of your own and other people's moves, marking them with dots. This will prevent shots fired at the same cells;
• After sinking an enemy ship, also surround it with points so as not to shoot at places where there are obviously no ships;
• You should not place ships in the corners of the field: usually newbies shoot at them first. However, exceptions will be discussed below;
• It is necessary to develop a strategy for placement. An uneven distribution of ships gives a good result: gather all the “large” ships into one or two dense groups, and hide the remaining “single-deck” ships separately in secret places on the playing field. In this case, the enemy will quickly identify and destroy the group of large ships, and then will spend a long time searching for the remaining small ones;
• By killing big ship, the enemy surrounds him with dots. This means that, having found a “four-decker”, the enemy immediately opens (4+1+1)*3 = 18 cells (that is, 18% or almost 1/5 of the field). “Three-decker” gives 15 cells (15%), “double-decker” - 12%, and “single-decker” - 9%. If you place the “four-decker” against the wall, then it will allow you to open only 12 cells (10 for a three-decker, 8 for a two-decker). If you place the “four-decker” in a corner, it will allow you to open only 10 cells (8, 6 and 4, respectively). Of course, if the enemy realizes that all the ships are on the edge, he will quickly sink them. Therefore, it is better to use this advice in combination with the previous one.
• Shooting tactics can also be different. However, it is best to start destroying enemy ships by looking for a “four-decker”. To do this, you can shoot diagonally, or draw a diamond, or shoot through 3 cells to the fourth. As soon as a four-deck ship is found, we look for three-deck ones, then two. Of course, during the search process you will come across “all sorts of little things” and make adjustments to your plans.
• Here’s a dishonest way: arrange all the ships except the last single-deck (it will serve as the Elusive submarine). And he will be placed (and killed) only in the last remaining cell. It's quite easy to combat this: let the players place ships in one color and fire in another. It is possible, for example, for players to have pens or pencils different colors and after arranging the ships, simply change handles.