4.  P-Q4 PxP 5.  KtxP P-QR3 6.  KtxKt KtPxKt 7.  B-Q3 P-Q4 8.  Castles Kt-B3 9.  B-KB4 B-Kt5

---------------------------------------
8 | #R |    | #B | #Q | #K |    |    | #R |
|---------------------------------------|
7 |    |    |    |    |    | #P | #P | #P |
|---------------------------------------|
6 | #P |    | #P |    | #P |#Kt |    |    |
|---------------------------------------|
5 |    |    |    | #P |    |    |    |    |
|---------------------------------------|
4 |    | #B |    |    | ^P | ^B |    |    |
|---------------------------------------|
3 |    |    |^Kt | ^B |    |    |    |    |
|---------------------------------------|
2 | ^P | ^P | ^P |    |    | ^P | ^P | ^P |
|---------------------------------------|
1 | ^R |    |    | ^Q |    | ^R | ^K |    |
---------------------------------------
A    B    C    D    E    F    G    H

Diag. #142

As White can force Black to play P-Kt3, a weakening move, by P-K5 and Q-Kt4, Black should have played P-Kt3 at once, so as to have Kt-R4 in answer to P-K5, thus keeping one piece for the defence of the King’s side.  The latter is in jeopardy after the move in the text, and White’s attack succeeds.

10.  P-K5          Kt-Q2
11.  Q-Kt4         P-Kt3
12.  KR-K1         P-QB4

Of course Black must not accept the sacrifice of the exchange by playing P-Q5.  After 13 Kt-K4, BxR; 14 Kt-Q6ch, K-B1; 15 R x B, Black is in a mating net, from which there is no escape, as he has no time to collect sufficient forces for the defence.  The move in the text does not stem the tide either, and White quickly forces the win by a beautiful combination.

13.  P-QR3          B-R4
14.  B-KKt5         Q-Kt3

Q-B2 leads to the same conclusion.

          15.  P-Kt4!  PxP
          16.  KtxP PxKt
          17.  P-K6

The object of White’s fifteenth move is revealed.  Without it the R at K1 would now be attacked.

17. ...  P-B4

Kt-B4 fails on account of 18.  PxPch, KxP; 19.  R-K7ch, followed by Q-KB4.

18.  PxKt double ch    KxP
19.  BxPch             Resigns.

Game No. 30

White:  Tarrasch.  Black:  Spielmann.

Sicilian Defence.

1.  P-K4 P-QB4
2.  Kt-QB3 Kt-QB3
3.  P-KKt3

Speedy development by Kt-B3 and P-Q4 is more desirable, as otherwise Black may have time to get a firm footing at his Q5.

3. ...            P-KKt3
4.  B-Kt2         B-Kt2

The Black Bishop is the more effective, as the line of the White Bishop is masked by the KP.  Small as this advantage would seem, it becomes serious later on.  It is another confirmation of the doctrine that the value of each manoeuvre in the opening depends on the measure of mobility it affords for the pieces.

          5.  KKt-K2 Kt-B3
          6.  P-Q3