1rbq1rk1/p1b3pp/3p1pn1/np1P1N2/2p1P3/5N2/PB1QBPPP/2R2R1K Fig. 9.
[Position after White's 19th Move.]
19.B to K 2...

Not 19. B to Kt sq. White wants to keep a pressure upon Black's pawns. The position is now as shown in Fig 9. Neither side has as yet gained any marked advantage.

Second Variation.
Repeat Opening to Black's eighth move inclusive.
9.
Kt to B 3
B to Kt 5[82]
10.
B to Q Kt 5
K to B sq.[83]
11.
B to K 3
K Kt to K 2
12.
P to Q R 4[84]
Kt to R 4[85]
13.
P to Q 5
B takes B
14.
P takes B
Kt to Kt 3
15.
K to R sq.[86]
P to K R 3
16.
Kt to K 2
P to Q B 4
With the better game.
Third Variation.
Repeat Second Variation up to White's ninth move inclusive.
First three moves as before.
9.
...
Kt to R 4
10.
B to Kt 5
Kt to Kt 2
11.
Kt to Q 5
P to K B 3
12.
B takes P
P takes B
13.
Kt takes P: ch.
K to B sq.
14.
Kt to Kt 5
Kt to Kt sq.
15.
Kt(Kt5) takes P: ch.
K to Kt 2
16.
B takes Kt
R takes Kt
17.
Kt takes R
Q takes B
18.
Kt to Kt 5
K to Kt 3
19.
Kt to B 3
B to Kt 5
20.
Kt to K 5: ch.
K to R 4
21.
Kt takes B
Q takes Kt
Even game.

Fourth Variation.
Repeat Third Variation up to Black's tenth move inclusive.
11.
B takes P: ch.
K takes B
12.
Kt to Q 5
R to K sq.
13.
B takes Kt
R takes B
14.
Kt to Kt 5: ch.
K to Kt sq.
15.
Q to R 5
P to K R 3
16.
Q to Kt 6
P takes Kt
17.
Kt to B 6: ch.
K to B sq.
18.
Kt to R 7: ch.
K to Kt sq.

And White draws by perpetual check.

The "Compromised" Defence to the Evans Gambit.
WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.B to B 43.B to B 4
4.P to Q Kt 44.B takes P
5.P to B 35.B to R 4

By retiring the Bishop to R 4, instead of to B 4 as in the previous variations, Black reserves the option of adopting either the "Compromised" or the "Normal" Defence.

6.P to Q 46.P takes P
7.Castles7.P takes P

The capture of this, the third Pawn, constitutes the "Compromised" Defence, so called because it was formerly considered that this capture compromised Black's game.

8.Q to Kt 38.Q to B 3
9.P to K 59.Q to Kt 3

If 9. ... Kt takes P, White would win with 10. R to K sq., P to Q 3. 11. Kt takes Kt, P takes Kt. 12. Q to R 4, or Kt 5: ch., winning a piece.

10.Kt takes P10.K Kt to K 2
11.B to R 311.Castles
12.Kt to Q 512.Kt takes Kt
13.B takes Kt...

If White were to capture the Rook, the course of the game would probably be as follows—

13.B takes R13.Kt to B 5 (!)
14.Kt to R 414.Q to Kt 5
15.Q to Kt 315.P to Q 4
16.Q takes Q16.B takes Q

And White must lose one of the two attacked Bishops.

...13.P to Q 3
14.P takes P14.P takes P
15.Q R to Q sq.15.R to Q sq.
16.Q to R 4...

Threatening to win a piece with 17. B takes Kt.

...17.B to Kt 3
18.B takes Kt18.P takes B
19.Q takes B P19.R to Kt sq.
20.R takes P20.B to K 3

The only defence, for Queen and Rook are attacked, and he cannot play 20. ... R takes R, because of 21. Q to K 8 mate.

21.K R to Q sq.

Threatening 22. R takes R: ch., R takes R: 23. R takes R: ch., B takes R; 24. Q to K 8: mate.

...21.P to K R 3

The position being perfectly even, the game should result in a draw. There is no danger now for Black to lose a piece, because after 22. R takes R: ch., R takes R: 23. R takes R: ch., B takes R; 24. Q to K 8: ch., K to R 2, White cannot play 25. Q takes B, because of 25. ... Q to Kt 8: mate.

Second Variation.
Repeat the opening from preceding game up to White's 9th move.
9.
B to Kt 5[87]
Q to Kt 3
10.
Kt takes P
B takes Kt
11.
Q takes B
P to B 3[88]
12.
B to B 4
P to Q 3
With the better game.
THE EVANS GAMBIT DECLINED.

From the foregoing illustrations of the Evans Gambit, it will be seen that this opening is exceedingly complicated both for the attack and the defence. It is safer for Black to decline accepting the gambit, which is done by playing 4. ... B to Kt 3. The opening is then reduced to a Giuoco Piano, White having (theoretically speaking) compromised his pawns on the Queen's side by having advanced them prematurely, which advance may prove a weakness in the ending.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.B to B 43.B to B 4
4.P to Q Kt 44.B to Kt 3
5.P to Q R 4

The best move. 5. P to Kt 5 is inferior, as shown exhaustively in the following variations:—

5.P to Kt 55.Kt to R 4
6.Kt takes P6.Kt to R 3 (!)
7.P to Q 47.P to Q 3
8.B takes Kt8.P takes B

Not 8. ... P takes Kt, because of 9. B takes P, R to K Kt sq.; 10. B takes P: ch., K takes B; 11. B takes P, Q to Kt 4; 12. P to Kt 3, B to Kt 5; 13. P to B 3, with four pawns for a piece, which is more than an equivalent.

9.Kt takes P...

Not 9. B takes P: ch., because of 9. ... K to K 2; 10. Q to B 3, R to B sq. (!); 11. Kt to Q B 3, B to K 3; 12. Q to B 5, B takes B (if 12. ... B takes Q; 13. Kt to Q 5, mate), and wins; or 12. Q to R 5, then P takes Kt, and wins.

...9.Q to B 3
10.Q to R 5...

Not 10. Kt takes R, became of 10. ... B takes P; 11. Q to R 5: ch., K to K 2; 12. Q to B 7: ch., Q takes Q; 13. B takes Q, B takes R, and wins. Equally bad would be 10. P to K 5, P takes P; 11. Kt takes P, Kt takes B; 12. Kt takes Kt, B takes P, and wins.

...10.Castles (quite legal)
11.Kt takes R P: dble. ch.11.K to Kt 2
12.Kt to Kt 412.B takes Kt
13.Q takes B: ch.13.K to R sq.
14.Q to K 214.B takes P, and wins.

...5.Q P to R 3

Not 5. ... Kt takes P, which would be met by 6. P to R 5, with a winning attack. And not 5. ... P to Q R 4, which is inferior to the text move, and weakens the pawns on the Queen's side for the End game.

6.Castles6.P to Q 3
7.P to B 37.Kt to B 3
8.P to Q 3

The position is now equivalent to the Giuoco Piano, except that White has advanced his Queen's side pawns, which is a slight disadvantage.

THE TWO KNIGHTS' DEFENCE.

Reverting to the opening moves of the Giuoco Piano, in answer to 3. B to B 4, Black may play (instead of 3. ... B to B 4), 3. ... Kt to B 3. This constitutes the Two Knights' Defence. White may continue with 4. P to Q 3, or Kt to B 3, or adopt a more spirited line of play with 4. Kt to Kt 5. Black's defences being 4. ... P to Q 4. or 4. ... Kt takes P. We append one or two leading variations:

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.B to B 43.Kt to B 3
4.Kt to Kt 5...

In the Giuoco Piano, where Black's Knight would be still at Kt sq., this advance would be bad, because Black could reply 4. ... Kt to R 3, defending the K B P. Here, however, it is the best move. Black's best defence is

...4.P to Q 4
5.P takes P5.Kt. takes P (?)

Not to be recommended. The best move is 5. ... Kt to Q R 4.

6.Kt takes B P (!)6.K takes Kt
7.Q to B 3: ch.7.K to K 3

In order to defend the Knight, which is twice attacked. 7. ... Q to B 3 would be bad policy, for in such case White would play 8. B takes Kt: ch., B to K 3; 9. B takes Kt, P takes B; 10. Q takes P, with three Pawns ahead.

8.Kt to B 38.Kt to K 2

White attacking the Knight once more, and Black defending it again.

9.P to Q 49.P to B 3

And we have the position depicted in Fig. 10. Black could not play 9. ... P takes P, for fear of 10. Q to K 4: ch., winning back the piece.

r1bq1b1r/pp2n1pp/2p1k3/3np3/2BP4/2N2Q2/PPP2PPP/R1B1K2R Fig. 10.
[Position after Black's 9th move.]
10.B to K Kt 5...

Pinning the Knight, so as to take off one of the defences of the Kt at Q 4.

...10.K to Q 2
11.P takes P11.K to K sq.
12.Castles Q R12.B to K 3
13.Kt takes Kt13.B takes Kt
14.R takes B14.P takes R
15.B to Kt 5: ch.15.Kt to B 3
16.B takes Q16.R takes B
17.P to K 6, and wins.
Second Variation.

Repeat as far as White's 8th move inclusive.

Should Black play, instead of 8. ... Kt to K 2, 8. ... Kt to Kt 5, the following variations may ensue:

9.Q to K 49.P to Q Kt 4
10.B to Kt 310.P to B 4
11.Kt takes P11.B to R 3
12.P to Q R 412.R to B sq.
13.P to Q 313.B to K 2
14.Castles...

White threatens now a formidable attack with 15. P to K B 4, to be followed by attacking the Knight with the Q B P, and so to win back the piece.

...14.B to Kt 2
15.P to Q B 315.P to Q R 3

If 15. ... Kt to R 3, White would win with 16. P to K B 4.

16.Q to Kt 4: ch.16.K to B 2
17.P to K B 417.R to B sq. (best)
18.P takes P: dis. ch.18.K to Kt sq.
19.B to R 6 (!)19.R takes R: ch.
20.R takes R20.B to B sq.
21.Kt to Q 6, and wins.

For the immediate threat, 22. Q to K 6: ch., or Kt takes B, is fatal.

Third Variation.
Repeat the Opening up to Black's 5th move.

5.
...
Kt to Q R 4[89]
6.
B to Kt 5: ch.
P to B 3
7.
P takes P
P takes P
8.
B to K 2[90]
P to K R 3
9.
Kt to K B 3
P to K 5
10.
Kt to K 5
Q to B 2
11.
P to K B 4
B to Q 3
12.
P to Q 4
P takes P e.p.
13.
B takes P
B takes Kt
14.
Q to K 2
Castles
15.
P takes B
R to K sq.
16.
Castles
R takes P
17.
B to K B 4
Q to Kt 3: ch.
18.
Q to B 2
Q takes Q: ch.
19.
R takes Q
R to K 8: ch.
20.
R to B sq.
R takes R: ch.
21.
K takes R, &c.
...
White has the better pawn
position on the Queen's side.
THE RUY LOPEZ.

This Opening, invented by the Spaniard Ruy Lopez in the sixteenth century, is still resorted to in tournaments and matches, where caution and safety are essential. Instead of developing the Bishop to Q B 4 with the intention of an attack upon Black's weakest point—viz., the K B P, White plays 3. B to Q Kt 5, threatening 4. B takes Kt, and 5. Kt takes P. In answer to 3. B to Kt 5, Black may play 3. ... P to Q R 3; 3. ... K Kt to B 3 (best); 3. ... K Kt to K 2 (not so good); 3. ... B to B 4; 3. ... Kt to Q 5 (not to be recommended); 3. ... P to Q 3 (a safe, but dull defence); 3. ... P to B 4 (risky); and 3. ... P to K Kt 3, the latter involving the development of the K B to Kt 2.

White's replies are, in answer to 3. ... P to Q R 3; 4. B takes Kt; or 4. B to R 4. And in answer to 3. ... Kt to B 3; 4. Kt to B 3; 4. P to Q 3; 4. Q to K 2; 4. P to Q 4, or 4. Castles.

The main defences are 3. ... P to Q R 3, and 3. ... Kt to B 3. The latter is to be preferred; for to a certain extent the White Bishop is not in such a favourable position at Kt 5 as at R 4; it should, therefore, not be driven into a better one.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.B to Kt 5

These moves complete the Ruy Lopez Opening.

...3.P to Q R 3
4.B to R 4...

White could here temporarily win a pawn with 4. B takes Kt, Q P takes B, 5. Kt takes P. But 5. ... Q to Q 5 wins it back for Black; it is, therefore, useless to exchange the powerful King's Bishop.

...4.Kt to B 3
5.P to Q 35.P to Q 3

This is the quietest form of the Lopez and may be adopted with safety.

6.Kt to B 36.B to Q 2
7.Castles7.B to K 2
8.P to Q 48.P to Q Kt 4
9.P takes P9.Q Kt takes P
10.Kt takes Kt10.P takes Kt
11.B to Kt 311.Castles
12.B to Kt 512.P to Q R 4

A good move, as it anticipates White's advance of the Q R P, and thus renders the Queen's side safe.

13.B takes Kt13.B takes B
14.P to Q R 414.P to Kt 5

It would be bad to play here 14. ... P takes P, because it not only would give White an open Rook's file, but also isolate Black's R P and Q B P, a weakness from which he could not recover against the best play.

Neither side has so far gained any material advantage.

Second Variation.
Repeat the first five moves on either side.
6.
P to B 3
P to K Kt 3
7.
Q Kt to Q 2
B to Kt 2
8.
Kt to B sq.
Castles
9.
Kt to Kt 3
P to Q Kt 4
10.
B to B 2
P to Q 4
11.
Castles
Q to Q 3
Even game.
Third Variation.
Repeat first four moves on either side.
5.
P to Q 3
B to B 4
6.
P to B 3
Q to K 2 (!)
7.
Castles
Castles
8.
P to Q 4
B to Kt 3
9.
B takes Kt
Kt P takes B
10.
Kt takes P
Kt takes P
11.
R to K sq.
P to K B 4
12.
Kt to Q 2
Q to B 3
Even game.
Fourth Variation.
Repeat first four moves as above.

5.
Castles
Kt takes P
6.
P to Q 4
P to Q Kt 4
7.
Kt takes P
Kt takes Kt[91]
8.
P takes Kt
P to Q 3[92]
9.
P takes P
Kt takes P[93]
10.
B to Kt 3
B to K 2
11.
Q to B 3
R to Q Kt sq.

Not 11. ... B to Kt 2, because of 12. B takes P ch., Kt takes B; 13. Q takes B, &c.

About an even game.

At the present day, however, as we have said, the defence of 3. ... P to Q R 3 is discarded by the best authorities in favour of 3. ... Kt to K B 3. The game may then proceed as follows:

4.Castles4.Kt takes P
5.P to Q 45.B to K 2
6.Q to K 26.Kt to Q 3 (!)
7.B takes Kt7.Kt P takes B (!)

If 7. ... Q P takes B, White would obtain an advantage by 8. P takes P, Kt to B 4; 9. R to Q sq., B to Q 2; 10. P to K 6 (!), P takes P; 11. Kt to K 5, Kt to Q 3 (or B to Q 3); 12. Q to R 5; ch., P to Kt 3; 13. Kt takes Kt P, and wins.

8.P takes P8.Kt to Kt 2 (!)
9.Kt to B 39.Kt to B 4
10.Kt to Q 410.Castles

The tempting move 10. ... B to R 3, winning the exchange, would be unsound, because of White's reply 11. Q to Kt 4, Castles; 12. B to R 6, &c.

Another variation proceeds as follows:

4.P to Q 44.P takes P
5.Castles5.B to K 2
6.P to K 56.Kt to K 5
7.R to K sq.7.Kt to B 4
8.B takes Kt8.Q P takes B (!)
9.Kt takes P9.Castles
10.B to K 310.R to K sq.
11.Kt to Q B 311.Kt to K 3
12.Kt to B 512.Kt to B sq.
Even game.

The remaining Openings, though not less important, we shall be compelled to deal with more briefly. It must, however, be remembered that it is only the first three or four moves on either side (or even less) which constitute a given Opening. All beyond these are optional, though in many instances the best moves in continuation on either side have been ascertained by careful analysis, and these are consequently known, among players, as "book" moves.

PHILIDOR'S DEFENCE.

After 1. P to K 4, P to K 4; 2. Kt to K B 3, Black may defend the attacked King's pawn with 2.... P to Q 3, and this constitutes Philidor's Defence.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.P to Q 3
3.P to Q 43.P takes P
4.Kt takes P...

If 4. Q takes P, Black replies 4.... Kt to Q B 3 (best); 5. B to Q Kt 5, B to Q 2; 6. B takes Kt, B takes B; 7. B to Kt 5, Kt to B 3; 8. B takes Kt. Q takes B; 9. Q takes Q, P takes Q; 10. Kt to B 3, and Black has two Bishops against two Knights, and an open Kt and K file for his Rooks, and consequently the advantage.

...4.Kt to K B 3
5.B to Q B 45.B to K 2
Equal game.
Second Variation.
1.
P to K 4
P to K 4
2.
Kt to K B 3
P to Q 3
3.
B to B 4
P to K B 4[94]
4.
P to Q 4
K P takes P
5.
Kt to Kt 5
Kt to K R 3
6.
Kt takes P
Q to K 2[95]
7.
Q to R 5: ch.
K to Q 2
8.
B to Kt 5
Q takes P: ch.
9.
K to Q 2
Q to Kt 5
10.
Q to Kt 6
R takes Kt
11.
B to Q 5
P to B 3[96]
12.
P to K R 3
Winning the Q.
Third Variation.
Repeat the opening of second variation up to Black's fourth move.

4.
...
B P takes P
5.
Kt takes P
P takes Kt
6.
Q to R 5: ch.
K to Q 2
7.
Q to B 5: ch.
K to B 3
8.
Q takes P (K 4)[97]
P to Q R 3
9.
P to Q 5: ch.
K to Kt 3
10.
B to K 3: ch.
B to B 4[98]
11.
B takes B: ch.
K takes B
12.
P to Kt 4: ch.
K takes P [99]
13.
Kt to Q 2
Q to B 3
14.
R to Kt sq.: ch.
K to R 5
15.
P to Q B 3
P to Q R 4[100]
16.
B to Kt 5: ch.
K to R 6
17.
Kt to B 4: ch.
K takes P
18.
R to Kt 2: ch.
K to R 8
19.
Castles: checkm.
 

This variation has been selected to illustrate mate being given by castling.

THREE KNIGHTS' GAME.

The Three Knights' Game is brought about if, after 1. P to K 4, P to K 4; 2. Kt to K B 3, Kt to Q B 3, White plays 3. Kt to B 3, The following is an example:

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.Kt to B 33.B to Kt 5
4.B to Kt 54.K Kt to K 2
5.P to Q 45.P takes P
6.Kt takes P6.Castles
Even game.
FOUR KNIGHTS' GAME.

If Black moves 3. ... Kt to B 3, the previous moves being the same as in the Three Knights' Game, it is called the Four Knights' Game. It is convertible into a Ruy Lopez, if White plays 4. B to Kt 5; and into a Double Ruy Lopez, if Black replies 4. ... B to Kt 5.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to Q B 32.Kt to K B 3
3.Kt to B 33.Kt to B 3
4.B to Kt 54.B to Kt 5
5.Castles5.Castles
6.Kt to Q 56.Kt takes Kt
7.P takes Kt7.P to K 5
8.P takes Kt8.P takes Kt
9.Q takes P

If White had played 9. P takes Q P, Black's best reply would have been 9. ... P takes P, attacking the Rook; if 9. P takes Kt P, Black replies 9. ... B takes Kt P, with a promising attack.

...9.Q P takes P
10.B to K 210.B to Q 3
Even game.

THE VIENNA OPENING.

If, after 1. P to K 4, P to K 4, White plays 2. Kt to Q B 3, the Vienna Opening is the result. The Q Kt does not act immediately, but rather seems to relinquish the advantage of the first move; but this is only apparently so. For in all Openings the Q Kt plays an important rôle, and, having this piece in play, White soon resumes the attack, and with increased vigour in certain variations.

The defences for Black are—2. ... B to B 4; 2. ... B to Kt 5; 2. ... Kt to Q B 3; 2. ... Kt to K B 3. The latter yields the most satisfactory results. 2. ... Kt to Q B 3 may lead to the Steinitz Gambit, a difficult game for both sides; whilst 2. ... B to Kt 5 is the least satisfactory variation of all.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to Q B 32.Kt to K B 3
3.P to B 43.P to Q 4 (best)

In this variation it is not advisable to take the offered Gambit pawn, though Black might have done so if he had played 2. ... Kt to Q B 3 instead of 2. ... Kt to K B 3.

4.B P takes P4.Kt takes P
5.Q to B 35.Kt to Q B 3
6.B to Kt 5...

If 6. Kt takes Kt, Black would win with 6. ... Kt to Q 5; 7. Q to Q 3 (best), P takes Kt; 8. Q takes P, B to K B 4, to be followed by Kt takes P: ch. &c.

...6.Kt takes Kt
7.Kt P takes Kt (!)7.B to K 2
8.P to Q 48.B to K 3
9.Kt to K 29.Castles
10.Castles
With a very good game.
Second Variation.
1.
P to K 4
P to K 4
2.
Kt to Q B 3
B to B 4
3.
P to B 4
P to Q 3
4.
Kt to B 3
Kt to K B 3
5.
B to B 4
Kt to B 3
6.
P to Q 3
B to K Kt 5
7.
Kt to Q R 4
B to Kt 3
8.
Kt takes B
R P takes Kt
Even game.
Third Variation.
1.
P to K 4
P to K 4
2.
Kt to Q B 3
Kt to Q B 3
3.
P to K Kt 3
B to B 4
4.
B to Kt 2
P to Q 3
5.
Kt to R 4
B to Kt 3
6.
Kt takes B
R P takes Kt
7.
Kt to K 2
P to B 4
8.
P to Q 3
Kt to B 3
Even game.
THE STEINITZ GAMBIT.

This gambit is an offshoot of the Vienna Opening. It leads to a very difficult game, and the student will be well advised to avoid it. It is, however, desirable that he should know the moves of the Opening.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to Q B 32.Kt to Q B 3
3.P to B 43.P takes P
4.P to Q 4...

This constitutes the Steinitz Gambit. The White King becomes exposed to a violent attack; but if the attack fails, White is able to exchange pieces, and so obtain a superior End game, his King (an essential factor in the ending) being in better play than the Black King.

THE SCOTCH GAME AND SCOTCH GAMBIT.

Next in importance to the Ruy Lopez and the Vienna Opening is the Scotch, an Opening very frequently adopted in matches and tournaments. If after 1. P to K 4, P to K 4; 2. Kt to K B 3, Kt to Q B 3; White plays 3. P to Q 4, it is called the Scotch Game. Black's best move is 3. ... P takes P (not 3. ... Kt takes P), and White can either retake the Pawn or leave it. In the latter case the Opening becomes the Scotch Gambit. The former Opening is considered sounder than the latter, and for that reason is met with more frequently nowadays. Formerly, when Gambits generally were more in vogue, the Scotch Gambit enjoyed corresponding popularity. A few of the most essential variations of this interesting Opening follow. First, of the Scotch game.

WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.P to Q 43.P takes P
4.Kt takes P4.Kt to B 3
5.Kt to Q B 35.B to Kt 5
6.Kt takes Kt6.Kt P takes Kt
7.Q to Q 47.Q to K 2
8.P to B 38.P to B 4
9.Q to K 39.Castles.
Even game.
Second Variation.
Repeat the Opening up to Black's 4th move.
4.
...
B to B 4
5.
B to K 3
Q to B 3
6.
P to Q B 3
K Kt to K 2
7.
Q to Q 2
B takes Kt
8.
P takes B
P to Q 4
9.
Kt to B 3
P takes P
10.
P to Q 5
Kt to Kt sq.
11.
Kt takes P
...
Even game.
Third Variation.
Repeat Opening as before.
4.
...
Kt takes Kt
5.
Q takes Kt
Q to B 3
6.
P to K 5
Q to Q Kt 3
7.
B to K 3
Q takes Q
8.
B takes Q
...
Even game.

THE SCOTCH GAMBIT.
WHITE.BLACK.
1.P to K 41.P to K 4
2.Kt to K B 32.Kt to Q B 3
3.P to Q 43.P takes P
4.B to Q B 4...

The Pawn not being re-taken, as in the Scotch Game, constitutes the Scotch Gambit.

...4.B to B 4
5.Kt to Kt 55.Kt to R 3

Not 5. ... Kt to K 4, which most beginners are in the habit of playing, because White would still proceed exactly as after the move given in the text, and after the exchanges Black would have the K Kt not developed.

6.Kt takes B P6.Kt takes Kt
7.B takes Kt: ch.7.K takes B
8.Q to R 5: ch.8.P to Kt 3
9.Q takes B9.P to Q 4 (best)
10.P takes P...

If 10. Q takes P: ch., then 10. ... Q takes Q; 11. P takes Q, Kt to Kt 5; 12. Kt to R 3, R to K sq.: ch.; 13. K to Q sq., Kt takes Q P, &c.

...10.R to K sq.: ch.
11.K to Q sq....