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Sea battle in Russian. Game "sea battle" on paper

How to play war games on a piece of paper: tanks and sea battle. Rules, detailed description with photo.

Games on a piece of paper for two: tanks and sea battles

For both games in this article, both the game "Tanks" and the game "Sea Battle", you will need a sheet of paper and two pens. They are played by two participants. The players either agree in advance on who will go first, or decide by drawing lots, for example, by tossing a coin or using nursery rhymes.

And if the game "Battleship" is familiar to almost all people in our country, whose childhood was in the 80s - 90s or earlier, then the game of tanks on paper, or as many affectionately called it, "Tanchiki", was famous, but not so much. Despite the military theme, both of these games were very popular among both boys and girls. They were played both at home and at school, not only during breaks, but also during lessons, blocking the map with the location of their ships from their neighbor on the desk with a notebook or textbook.

These games will still help children spend their time in a fun and useful way. The benefit of these games is not only that it is live communication, a way to do something interesting, take your mind off something, and relax. For preschoolers, this is a way to prepare their hands for writing and repeat some letters and numbers in the game “sea battle”.

Playing tanks also develops the eye, and playing sea battles allows you to train your intuition, teaches you to find a square with given coordinates on the playing field (although one of them is indicated by a letter), makes it possible to develop your own strategy for combat, try to unravel your opponent’s strategy, imagine, how he thinks, how he could arrange his ships.

Tanki (tanks) is a game on paper. Rules

To get acquainted with the game, it is advisable for beginning players and younger children to take a double squared notebook sheet (it is torn out from the middle of the notebook). In the following games, it is better to use a sheet of clean office paper folded in half - this will make it more difficult for your opponents to hit the target. And each player in this game will need not a felt-tip pen or pencil, but a ballpoint pen. It will turn out more beautiful and clearer if the colors used by the opponents’ pens are different, but it is possible for them to be the same.

Preparing for the game

The fold is the border. On one side of the sheet is the territory of one participant, on the other - the other. Each participant draws their tanks on their side of the sheet. The number of tanks is agreed upon in advance; it should be the same (from 5 to 10 for each). Tanks should be small, approximately 1x2 cells. It is better to draw them further from the border and from each other - this will make it more difficult for the opponent to hit them.

Before the shelling begins, agree on the rules.

Rules of the game "Tanks"

Variant of this game with different military equipment: in addition to tanks, participants draw ships, planes, you can even draw paratroopers. About what military equipment draw and in what quantity, the participants agree before the start of the game.

Sea battle is a game on paper. Rules

Now you can play "Battleship" both on computer and desktop version However, the simple classic paper version has not yet been forgotten. The game allows you to feel like a military leader, in which you need to set coordinates for shelling the enemy fleet and think through the location of the ships of your fleet so as to destroy the other participant’s fleet before it destroys yours.

Preparing for the game

Before the start of the game, participants draw fields with coordinates on pieces of paper and place the ships of their fleet in them. At the same time, they must agree on the number of ships, their shape, location and rules. This is very important so that later there are no misunderstandings, resentments and quarrels. Because there are several options for the game.

For example, in my childhood, I, and all my friends and acquaintances with whom we played “Battleship,” drew three- and four-cell ships in random order: in the shape of rectangles, the letter “g,” the letter “z,” and a square. But it turns out that according to the rules of the classic version of the game, this is unacceptable - ships can only be positioned evenly, without bends.

Playing fields of the game "Sea Battle"

To play "Sea Battle" each participant will need a piece of checkered paper and a pen (you can use a pencil or felt-tip pen).

Before the game, participants draw two squares with sides of 10 cells on their piece of paper. In the cells to the left of each square, vertically from top to bottom, there should be numbers from 1 to 10 in ascending order, and above each square, horizontally from left to right, the letters from “A” to “K”, with the exception of the letters “E” and “Y” ". Those. Here’s a series: “A B C D E F G H I K.” Sometimes, instead of letters of the alphabet, a word consisting of ten non-repeating letters is written horizontally.

In the first square, each player places his own fleet, in the second he marks the location of the opponent’s fleet.

Shape, number and location of ships in the game "Battleship"

How many ships should there be in a sea battle game? In the classic version, each player has 10 ships:

1 piece - 4th grade,
2 pcs. - 3 grades,
3 pcs. - 2 classes,
4 pcs. - 1 class.

More details:

one ship consisting of four cells - a battleship (such ships are also called four-deck or four-pipe)
two ships consisting of three cells - a cruiser (three-deck)
three ships consisting of two cells - destroyer (double-deck)
four ships consisting of one cell - a submarine or torpedo boat(single deck)

Ships must be located in an even vertical or horizontal row without bends, and in no case diagonally. It is strictly forbidden to position ships so that their sides or corners touch each other. That is, there must be a distance of at least one cell between them. Ships can touch the sides of the field in which they are located.

It is very important that neither player sees the location of the opponent's fleet.

Rules of the game "Sea Battle"

The first player shoots (names the coordinates of the cell in which, as he assumes, the opponent may have a ship, for example, K-10).

The second player on the first field (the field with his ships) finds this square.

If the cell is empty, the second player puts a dot in it and says out loud: “Past.” The first player also marks this cell with a dot, but on the second field. The turn passes to the second player.
If this cell contains the middle or big ship, the second player puts a cross in it and says: “Wounded,” if small (single-deck), then “Killed.” “Killed” is also said when an opponent hits the last intact (not marked with a cross) deck of a multi-deck ship. The first player in this cell on the second field also puts a cross and makes another move.

Players take turns, but after each well-aimed hit, the player gets another turn. The winner is the one who is the first to blow up all the ships of the other participant. When the game is over, the participants can look at each other's playing fields.

If the winning player breaks the rules, the other player is considered the winner.

Possible violations:

I made a mistake in the signature or size of the fields
made a mistake in the shape, number or location of the ships
moved the ship during the game
tried to spy on how the enemy ships were positioned, etc.

How to play Battleship to win

The game "Battleship" has its own tricks, some of which few people know about, and therefore they play, hoping only for chance. But by applying certain strategies, you can significantly increase your chance of winning.

It is necessary to mark the coordinates of your shots and your opponent’s shots with dots or crosses.
You can’t peek at your opponent’s sheet, but you can observe his gaze, facial expression, gestures and intonation when he is looking for the desired cell on your field to try to guess whether there are ships in the immediate vicinity of a cell with given coordinates. Usually, in order not to make a mistake, if there is a ship nearby, a person double-checks the coordinates of the cell before saying “Past,” which means he spends a little, but still more time on the answer than if there are no ships nearby.
After destroying an enemy ship, mark the cells in contact with its sides and corners with dots or small circles. This is necessary in order not to waste time and moves on shots at obviously empty cells, since according to the rules, ships cannot be positioned close to each other.
It is advisable to destroy a damaged enemy ship as soon as possible in order to obtain information about the empty cells surrounding it and thereby reduce the area for searching for other ships.
Destroying the opponent's largest ship, consisting of four cells, will provide information about the empty cells adjacent to it. If this ship is not located along the border playing field, then it is surrounded by 14 empty cells. Thus, the remaining search area will be reduced by 18 cells, which is almost a fifth of the playing field. Therefore, players usually try to find the opponent’s largest ships first. To do this, you can “fire” along the main diagonals of the playing field, or first along diagonal parallel lines located at a distance of three cells from each other, and then along the diagonal lines between them.
Often players try to position their ships away from corners, boundaries and from each other, thinking that this way they will be safer. In fact, this increases the opponent's chances of winning due to the fact that when each ship is destroyed, the remaining search area becomes much smaller due to information about empty cells adjacent to the ship.
The hardest thing to look for is single-deck ships. The following strategy is based on this: place the largest ships in the corners of the playing field (a four-decker standing in the corner is surrounded by not 14, but 6 empty cells), medium ones - on the sides of the field, and place small single-deck ships in random order on the increased free space . You can also place all ships, except small ones, as close to each other as possible in one part of the field, and small ones in another. Most likely, the opponent will quickly destroy large and medium ships, but this is not scary, since this is not important for victory. And by increasing the free area on which small ships are located, the likelihood of quickly finding them becomes much less.
The photo shows examples of this arrangement of large and medium-sized ships. To search for single-deck ships, your opponent needs to fire at unmarked cells.

He will make fewer moves and win faster if the ships are positioned like in the next photo.
It turns out that sometimes some players cheat: they place only 9 ships on their field (all but one single-deck). And in order not to get caught doing this, if the enemy has already fired at the entire field except one cell, they finish drawing this ship in it. Or if they win, they also quickly finish drawing this ship on cells that have not yet been fired upon by the opponent.
This can be avoided if the participants take pictures of the ships before the game. Or ships are drawn with a pen, and marks are made with a pencil during the game. Or the pens of each participant are different in color, and after arranging the ships, the participants change pens.

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Sea battle - popular game With simple rules. When wondering how to win a sea battle, a winning attitude and the right strategy will always help the player in this.

First you need to remember the rules of the game. The player has ten ships at his disposal: 1 four-deck battleship, 2 three-deck cruisers, 3 two-deck destroyers and 4 single-deck boats.

The fleet is positioned on the field so that the ships do not touch each other. Nearby you need to draw the same field for the enemy to mark your shots. If you miss, the turn goes to the opponent. The first one to sink the opponent's fleet wins.

You can agree with your opponent on the possibility of changing the shape of ships, “bending” ships. This way, the ships on the field will look like Tetris parts, they will be more difficult to sink, and the game will become more interesting.

A successful outcome in the game does not depend on chance, but on two important components of the strategy:

placement of own vessels;
the optimal option for shooting at the enemy fleet.

Ship locations

There are several tactics for deploying your fleet. Whether the tactic works or not will depend on the opponent's shooting tactics. In any case, a haphazard arrangement of ships will not lead to an obviously good result.

"Half the Field"

The first tactic is to place the battleship, cruisers and destroyers on one half of the field.

But four boats are located on the opposite side, as a result they become practically invulnerable. The enemy will have to fire a lot of shots before he hears “Killed!”

"Diagonals"

Most players first start shooting across the field in two diagonals - from corner to corner. If the opponent is of this type, the second tactic will come in handy. All ships are positioned in such a way that diagonal shots do not hit them.

The good thing about this tactic is that it can be used in conjunction with another deployment tactic. A thoughtful location of your fleet is half the success.

"Shores"

The third tactic can be used in two ways. The first way is simple - place all your ships on the edges so that the middle of the field remains empty. While the enemy is firing haphazardly, wondering where all the ships have gone, you can calmly search for his fleet.

Such tactics may not justify themselves, especially when the opponent guesses what the trick is. If the secret of the location of the ships is revealed, the opponent for minimum quantity moves will sink the player's entire flotilla.

The second method is more thoughtful and similar to the “Half the Field” tactic. To do this, place the battleship, cruisers and destroyers along the banks, but scatter the boats throughout the field.

By placing large ships in this way, there is plenty left for boats free space. There is no strategy for finding boats, and the opponent will fire at random, losing precious moves.

Even if the enemy is not going to fire diagonally at the field, shots in the corners cannot be avoided. Thus, it is better not to occupy cells A1, A10, K1, K10. It is also undesirable to place ships in the very center of the field - D5, D6, E5, E6.

The strength and invulnerability of the player lies in single-deck boats - although they can be destroyed with one shot, to do this you must first find them. The more securely they are hidden, the greater the chances of winning the game.

Destroying the enemy

There are also several tactics for destroying an opponent’s flotilla. Some of them have something in common with ship deployment tactics.

"Diagonals"

Many people will place at least one vessel on this periphery. Therefore, we arm ourselves with patience and methodically shoot diagonally, alternating shooting directions for variety.

The player in the picture neglected the correct positioning tactics and paid for it with the loss of a battleship and a boat.

When the diagonals are shot, you can continue shooting in a checkerboard pattern.

"Chess"

From the name it is clear how to “clear” the enemy’s field. The good thing about this tactic is that it allows you to quickly find battleships, destroyers and cruisers. However, you will have to work hard to find boats.

"Locator"

The tactics are a bit similar to “Chess”, however, with its own twist. To use this tactic, in the corners of the field, mentally or directly with a pen, mark four squares measuring 4 by 4 cells.

You need to fire at them diagonally. As a result, the field will be divided by a white cross. Considering the number of ships that have already been sunk, finding the rest will not be difficult. In the picture, the player discovered six ships thanks to the Locator tactic.

"Crow's Feet"

Destroying a battleship gives the player the advantage that he will have a much smaller number of cells left to fire than if he shoots down, for example, a destroyer. Having sunk a battleship, there will be from 6 to 14 cells around it, which the player no longer needs to fire at.

So, to find a battleship, you can use the “Houndstooth” tactic. To do this, mentally divide the field into squares measuring 4 by 4 cells and fire four volleys in each square.

In the first upper square, the player fires a volley at A3, B4, B2, D1. Next, it remains to repeat the pattern in other squares. The battleship will be found in a maximum of 24 shots.

After the battleship is found and sunk, you can move on to attacking the three-deck cruisers. To do this, you need to fire only two shots in each square.

In the first square, shoot at B1 and G3, and do the same with the rest of the minifields. The eleventh shot is guaranteed to bring down the cruiser.

To knock out a double-deck destroyer, you need to fire three shots in each square. In the first square, shoot at A2, B3 and B4. Repeat the triple move in the remaining squares. In the end, the most difficult thing will remain - finding boats. Unfortunately, there are no tactics for finding them. The player will have to rely on his intuition or the psychology of the enemy.

There are several more rules for quickly destroying the enemy fleet:

The rules of “Sea Battle” do not require that you must finish off the ship after the first “Wounded!” However, it is better to bring the matter to a victorious “Killed!”, because in this way the player will be able to find out which cells need not be shot at. After all, ships cannot stand close to each other.
When shelling the enemy field, there is no need to mark time. Shots should cover as much as possible large area. Keeping the tactics he likes in mind, the player can “walk” around the field, instead of continuing to fire at an unsuccessful area.
If the opponent uses some kind of tactics, rather than randomly firing at random cells, you need to use your head. Sometimes, by looking closely at the enemy's moves, you can guess how he arranged his ships.
By frequently playing with one opponent, a player can memorize his placement and shooting tactics, using the experience gained to improve his own strategy.

To practice your skills in playing Battleship and test your tactics, you can use online services. The advantages of gaming sites are high speed and low resource consumption. And having developed and improved his strategy, the player will be able to show off his knowledge in a game with a live opponent.

There is no 100% way to win at Battleship; ultimately, it all depends on the strategy of the enemy and the player himself. It is for this reason that Battleship remains a fun way to pass the time.

An incredibly popular paper game. And although there are now special gaming kits for “Battleship”, as well as a lot of computer implementations, classic version on the leaflet 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 with one cell each (“single-deck” or “one-pipe”), 3 ships with 2 cells each, 2 with 3 cells each and one with four decks. 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 complete victory one of the players, 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 luck, 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. Good result gives an uneven distribution of ships: 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 figure out and defeat the group large ships, and then will spend a long time looking for the remaining little ones;
Having killed a large ship, the enemy surrounds it 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.

An incredibly popular paper game. 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"

Ship placement

Next, the deployment of fleets begins. The classic rules of naval combat say that there should be 4 ships of one cell each ("single-deck" or "one-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.

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

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;
Having killed a large ship, the enemy surrounds it 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 of different colors and, after arranging the ships, simply exchange pens.

Do you play naval battle but don't always win? Then you are probably interested in learning how to significantly increase your chances of winning, how to place your ships correctly, how to quickly destroy enemy ships and, of course, how to win the game Battleship!

Rules of the game "Sea Battle"

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

How to win the game Sea Battle

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 state 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. Thus, 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:

How to shoot at enemy ships

The first and most obvious rule for optimal shooting is the following rule: do not shoot at the 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 having destroyed an enemy battleship, we best case scenario we will immediately receive information about 14 guaranteed free cells, and by destroying the cruiser, about only 12.

Optimal shooting strategy

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.

Sequence of the best moves to start the game

If we turn to mathematical theory, we can build a map of the probability of ship deployment:

Based on this map, sequence of “best moves” with constant misses it looks like this (see picture):

C1, J8, A8, H1, A4, J4, D10, G10, E1, D2, B3, A2, C9, B10, H9, I10, I7, J6, I5, H6, J2, I3, H4, G5, G2, F3, E4, B7, A6, B5, C6, C3, D4, D5, F6.

How to arrange 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.