Читать книгу The Strategy of Chess - Edward Lasker - Страница 18

Now the King's Pawn is attacked twice. It would be bad to support it with Kt-QB3, as White would exchange pawns and then Queens. Black would thus forfeit his chance of castling and lose much time in bringing the King into safety and the Rooks into play. P- KB3, of course, is impossible, as it is not a developing move, and moreover blocks the natural development of the King's Knight. Protecting the pawn with the Queen would also block other pieces, and QKt-Q2 cannot be good, as it blocks the Queen's Bishop.

Since it seems impossible to protect the King's Pawn, the only alternative would be to exchange it; indeed it is on the whole the best course, although it allows a White piece to take up a dominating position in the centre. Wishing to avoid this, Black plays

3. … B-Kt5

and, by pinning the opponent's Knight, indirectly protects the King's Pawn. This manoeuvre is, however, ill-advised, as Black is forced to exchange the Bishop for the Knight. The Bishop will have moved twice, the Knight only once, therefore White will have gained a move for his development.

4. PxP BxKt

Should Black play PxP at once, White would exchange Queens, release the pin, and win the pawn.

5. QxB PxP 6. B-QB4

White has now two pieces more in play than Black, instead of only one, and the mobility of the White Queen, which Black himself has brought out, begins to have a threatening effect on Black's game.

6. … Kt-KB3 7. Q-QKt3 Q-K2

Black cannot cover his King's Bishop's Pawn with Q-Q2 because 8. QxP wins the Rook, whilst now Black could play 8. … Q-Kt5ch in reply, forcing the exchange of Queens. The text move, which is forced, blocks the Bishop, and at the same time prevents the development of the King's Rook, all of which is the direct consequence of the loss of one move.

8. Kt-B3

White rightly disdains the gain of the Knight's Pawn, but prevents the exchange of Queens in developing a piece. He proves the superiority of his position much more convincingly in that way. Black must now lose yet another move to protect his Knight's Pawn.

8. … P-B3 9. B-KKt5 P-Kt4

Black must try to develop his Queen's Knight at last. He cannot play QKt-Q2 at once, since his Knight's Pawn would again be unprotected; therefore he plays the move in the text, probably thinking that now White also must lose a move to withdraw his Bishop. But in view of the fact that Black's game is wholly undeveloped, and that he plays practically several pieces down, White sacrifices his Knight for two pawns: he foresees the position which occurs a few moves later, when Black is hemmed in on all sides.

10. KtxP PxKt 11. BxKtPch QKt-Q2 12. Castles QR R-Q1

This is the only piece available to cover Q2, for the King's

Knight is pinned. White has another piece in reserve, his King's

Rook, and against this Black is defenceless.

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8 | | | | #R | #K | #B | |#R |

|———————————————————|

7 | #P | | | #Kt| #Q | #P | #P | #P |

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6 | | | | | | #Kt| | |

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5 | | ^B | | | #P | | ^B | |

|———————————————————|

4 | | | | | ^P | | | |

|———————————————————|

3 | | ^Q | | | | | | |

|———————————————————|

2 | ^P | ^P | ^P | | | ^P | ^P | ^P |

|———————————————————|

1 | | | ^K | ^R | | | | ^R |

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A B C D E F G H

Diag. 16

13. RxKt

compare Diag. 12.

13. … RxR 14. R-Q1 Q-K3

This releases the King's Knight. Now White could win by playing BxKt and BxRch, but he prefers to end up with a magnificent sacrifice.

15. BxRch KtxB 16. Q-Kt8ch!! KtxQ 17. R-Q8 mate

The final position shows in a striking manner how a few well- developed pieces can be worth more than many undeveloped ones, and the whole game is an example of the fatal consequences which can follow the loss of a move, since it often leads to the compulsory loss of further moves in the course of the game.

"This is the curse of every evil deed That propagating still it brings forth evil."

The logical sequence of the moves in this game, as pointed out in the commentaries to it, is borne out by the curious coincidence that I once had the opportunity of playing a game in exactly the same sequence of moves, against a player to whom Morphy's "brilliancy" was unknown.

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The leading principle of all opening moves is made clear by the foregoing pages, namely, rapid development of pieces, and consequently the avoidance of the loss of a move in any shape or form.

Before treating of the various systems of openings, I will say a few words on the principles of PAWN PLAY.

Each opening is characterised by a well-defined pawn formation, and concurrently a certain method in the development of the pieces. Naturally the formation of a pawn skeleton is not an independent factor, but must be evolved with a view to facilitating the favourable development of pieces. But when considering the form of a pawn position and that of the pieces, we cannot shut our eyes to the fact that pawn formation must necessarily be the dominant consideration in our mind. Pawn formation is of a more permanent character than that of the pieces, in consequence of the latter's greater mobility. When we have made a rash move with a piece, to which our attacking disposition may have tempted us, we may still have a chance of retrieving the position by timely retreat. Once a pawn has moved it cannot turn back, and only after the greatest deliberation should we embark on changes in our pawn formation in order not to disturb the balance of this "static element" of the game. But we shall see that the pawn skeleton which was formed in the opening often weathers the storm and stress of the middle game, and frequently preserves its character right up to the end-game. I will therefore make pawn formation my starting-point in an attempt to show the way through the maze of the openings on the basis of general strategical principles.

If our pawn skeleton is to promote the freedom of all the pieces, we must not build it up with the narrow view of developing minor pieces only, but must consider from the very first in which way it will enable the Rooks to get into action. We can unite these tendencies in making the CENTRE OF THE BOARD the main field of action for all our forces. This means for both sides K4 and Q4, and also in a lesser degree QB4 and KB4. We shall get a clear insight into the positional advantage of having command of the centre later on, when discussing the middle game. At present I will only touch the subject in a general way, explaining it in an elementary form, which will be sufficient to develop an understanding for pawn strategy in the opening. In the course of further deductions, after the grasp of this difficult stage of the game has become stronger, I will go into details which will allow the subject to be stated in a more precise form.

Placing the pieces in the centre is of value, because there they have more mobility than near the edge, which, of course, limits their range of action, and also because from the centre a concentration of forces on a given point can generally be effected in the quickest way.

In most cases two centre squares become inaccessible at once, through the opponent placing one of his pawns in the centre; therefore it would seem a good plan to lure that pawn away, and this is rendered feasible by playing P-K4 or P-QB4 when the opponent has a pawn on his Q4, and P-Q4 or P-KB4 when he has a pawn on K4. In the following we will consider such manoeuvres as could apply either to White or Black, from the point of view of White, to whom the initiative is, as pointed out above, a sort of birth-right. Naturally, should White lose a move, as, for instance, 1. P-K4, P-K4; 2. Kt-KB3, Kt-QB3; 3. P-QR3? the position is reversed, and Black is bound to obtain the initiative which is White's birthright.

The pawn moves mentioned above also have the tendency of giving the Rooks an opportunity for action. A Rook standing behind an advanced pawn may support its further advance, or, if the pawn should be exchanged, might get an open file.

The damage we wish to inflict on our opponent we must, of course, try to avoid ourselves. Thus we will not easily give up a centre pawn unless we can obtain some other advantage in doing so. This advantage may be, that in exchanging the centre pawn we open up lines of attack for our pieces, or that we are able to place one of our pieces in a commanding position in the centre of the board.

The following example may serve as an illustration. Supposing

White plays after