chess piece value

hi

in this article i will try to tell you how much each peices value is.

 

In chess, the chess piece relative value system conventionally assigns a point value to each piece when assessing its relative strength in potential exchanges. These values are used as a base that helps determine how valuable a piece is strategically. Calculations of the value of pieces provide only a rough idea of the state of play. The exact piece values will depend on the game situation, and can differ considerably from those given here. In some positions, a well-placed piece might be much more valuable than a badly-placed piece may be completely trapped and, thus, almost worthless.

Standard valuations

The standard valuations for the pieces are as follows,these are the values used today:

Queen-9

Rook-5

Knight and Bishop-3

Pawn-1

King-1000000000000000000000000000000000000000000000000000000000

In the endgame, when there is little danger of checkmate, the fighting value of the king is about four points (Lasker)

The king is good at attacking and defending nearby pieces and pawns. It is better at defending such pieces than the knight is, and it is better at attacking them than the bishop is (Ward).

This system has some shortcomings. For instance, three minor pieces (nine points) are often slightly stronger than two rooks (ten points) or a queen (nine points) (Capablanca, de Firmian,Fine , Benko ).

Alternate valuations

Although the 1/3/3/5/9 system of point totals is generally accepted, many other systems of valuing pieces have been presented. They have mostly been received poorly, although the point system itself falls under similar criticism, as all systems are very rigid and generally fail to take positional factors into account.

 Jacob Sarratt gives these valuations of the pieces:

• pawn 2 at the start, 3¾ in the endgame
• knight 9¼
• bishop 9¾
• rook 15
• queen 23¾
• king as attack piece (in the endgame) 6½

If these values are divided by three and rounded, they are more in line with the valuations used now:

• pawn 0.7 in the beginning, 1.3 in the endgame
• knight 3.1
• bishop 3.3
• rook 5
• queen 7.9
• king as attacking piece in the endgame 2.2

Howard Staunton in The Chess-Player's Handbook notes that piece values are dependent on the position and the phase of the game (the queen typically less valuable toward the endgame), but gives these values, without explaining how they were obtained (Staunton 1870, 30–31):

• pawn 1.00
• knight 3.05
• bishop 3.50
• rook 5.48
• queen 9.94

In the 1817 edition of Philidor's Studies of Chess, the editor (Peter Pratt) gave the same values.

The 1843 German book Handbuch des Schachspiels by Paul Rudolf von Bilguer gave

• pawn 1.5
• knight 5.3
• bishop 5.3
• rook 8.6
• queen 15.5

When normalizing so that a pawn equals one:

• pawn 1
• knight 3.5
• bishop 3.5
• rook 5.7
• queen 10.3

Yevgeny Gik gave these figures based only on average mobility:

• pawn 1
• knight 2.4
• bishop 4
• rook 6.4
• queen 10.4
• king 3 (as an attacking and defensive piece)

but Andrew Soltis points out problems with that chart and other mathematical methods of evaluation (Soltis 2004:10-12).

Emanuel Lasker gave these approximate values: (Lasker 1934:73)

• Knight = 3 pawns (3 points)
• Bishop = knight (3 points)
• Rook = knight plus 2 pawns (5 points)
• queen = 2 rooks = 3 knights (10 or 9 points)
• king = knight + pawn (4 points)

More recent evaluations

World Champion Emanuel Lasker (Lasker 1947) gave the following values (here scaled and rounded so pawn = 1 point):

• pawn = 1 (on average)
• knight = 3½
• bishop = 3½ (on average)
• rook = 5 (on average)
• queen = 8½.

However Lasker adjusts some of these depending on the starting positions, with pawns nearer the centre, and bishops/rooks on the kingside, being worth more:

• centre (d/e-file) pawn = 1½ points, a/h-file pawn = ½ point
• c-file bishop = 3½ points, f-file bishop = 3¾ points
• a-file rook = 4½ points, h-file rook = 5¼ points.

According to Burgess, Lasker (in his book Lasker's Chess Manual) gave these relative values for the early part of the game (Burgess 2000:491):

• rook pawn: ½
• knight pawn: 1¼
• bishop pawn: 1½
• central pawn: 2
• knight: 4½
• queen bishop: 4½
• king bishop: 5
• queen rook: 6
• king rook: 7
• queen: 11

Grandmaster Larry Evans gives the values:

• pawn = 1
• knight = 3½
• bishop = 3¾ 
• rook = 5
• queen = 10 (Evans 1967).

A bishop is usually slightly more powerful than a knight, but not always – it depends on the position (Evans 1967). A chess-playing program was given the value of 3 for the knight and 3.4 for the bishop, but that difference was acknowledged to not be real (Mayer 1997).

Another system is used by Max Euwe and Hans Kramer in Volume 1 of their The Middlegame, with values

• pawn = 1
• knight = 3½
• bishop = 3½
• rook = 5½
• queen = 10.

Bobby Fischer gave the values:

• pawn = 1
• knight = 3
• bishop = 3¼
• rook = 5
• queen = 9 

An early Soviet chess program used

• pawn = 1
• knight = 3½
• bishop = 3½
• rook = 5
• queen = 9½

Another popular system is

• pawn = 1
• knight = 3
• bishop = 3
• rook = 4½
• queen = 9 (Soltis 2004).

Changing valuations in the endgame

The relative value of pieces changes as a game progresses to the endgame. The relative value of pawns and rooks may increase, and the value of bishops may increase also, though usually to a lesser extent. The knight tends to lose some power, and the strength of the queen may be slightly lessened, as well. Some examples follow.

• A queen versus two rooks

• In the middlegame they are equal
• In the endgame, the two rooks are somewhat more powerful. With no other pieces on the board, two rooks are equal to a queen and a pawn

• A rook versus two minor pieces

• In the opening and middlegame, a rook and two pawns are weaker than two bishops; equal to or slightly weaker than a bishop and knight; and equal to two knights
• In the endgame, a rook and one pawn are equal to two knights; and equal or slightly weaker than a bishop and knight. A rook and two pawns are equal to two bishops

• Bishops are often more powerful than rooks in the opening. Rooks are usually more powerful than bishops in the middlegame, and rooks dominate the minor pieces in the endgame

 

I have got this information from wikipedia but i have put it in my own words

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