ILLUSTRATIVE OF THE PRECEDING VARIATIONS.

Game I.—Between Messrs. Cochrane and Staunton.

WHITE. (Mr. C.) BLACK. (Mr. S.)
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. P. to Q's 4th.
3. Kt. takes K. P. 3. Q. to K's 2d.
4. P. to Q's 4th. 4. P. to K. B's 3d.
5. Q. Kt. to B's 3d. 5. P. takes K. Kt.
6. Kt. takes Q. P. 6. Q. to K. B's 2d.
7. K. B. to Q. B's 4th. 7. Q. B. to K's 3d.
8. Castles. 8. P. to Q. B's 3d.
9. P. to K. B's 4th. 9. P. takes Kt.
10. B. P. takes P.10. Q. to her 2d.
11. K. P. takes P.11. B. takes P.
12. P. to K's 6th.12. Q. to her B's 3d.
13. Q. to K. R's 5th. (ch.)13. P. to K. Kt's 3d.
14. Q. takes B.14. K. Kt. to K's 2d.
15. Q. to K's 5th.15. Q. takes B.
16. Q. takes R.16. Kt. to K. B's 4th.
17. Q. B. to K. R's 6th.17. Q. to her Kt's 5th.
18. Q. takes B. (ch.)18. Q. takes Q.
19. B. takes Q.19. K. takes B.
20. P. to K. Kt's 4th.
Black surrenders.

Game II.—Between MM. Jaenisch and Petroff.

WHITE. (Mr. J.) BLACK. (M. P.)
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. P. to Q's 4th.
3. K. Kt. takes P. 3. Q. to K's 2d.
4. P. to Q's 4th. 4. P. to K. B's 3d.
5. Kt. to B's 3d. 5. P. takes P.
6. K. Kt. to Q's 2d. 6. P. to K. B's 4th.
7. K. B. to K's 2d. 7. Q. Kt. to B's 3d.
8. K. Kt. to Q. Kt's 3d. 8. K. Kt. to B's 3d.
9. Castles. 9. Q. to K. B's 2d.
10. P. to Q. B's 4th.10. Q. B. to Q's 2d.
11. Q. B. to K. B's 4th.11. Castles.
12. Q. Kt. to B's 3d.12. P. to K. R's 3d.
13. P. to Q. R's 3d.13. P. to K. Kt's 4th.
14. Q. B. to Q's 2d.14. P. to K. B's 5th.
15. P. to Q's 5th.15. Q. Kt. to K's 4th.
16. K. Kt. to Q's 4th.16. K. B. to Q. B's 4th.
17. Q. B. to K's square.17. K. R. to Kt's sq.
18. P. to Q. Kt's 4th.18. K. B. to K's 2d.
19. P. to K. B's 3d.19. P. to K's 6th.
20. Q. to her Kt's 3d.20. P. to K. Kt's 5th.
21. P. to Q. B's 5th.21. P. takes K. B. P.
22. Kt. takes P.22. Kt. takes Kt. (ch.)
23. B. takes Kt.23. Kt. to K. Kt's 5th.
24. Q. to her B's 4th.24. K. to Kt's sq.
25. Q. to K's 4th.25. Q. R. to K's sq.
26. P. to Q's 6th.26. Q. B. to his 3d.
27. Q. to her 4th.27. B. takes B.
28. R. takes B.28. B. to K. Kt's 4th.
29. Q. Kt. to his 5th.29. P. to Q. B's 3d.
30. P. to Q's 7th.30. Q. R. to K's 3d.
31. B. to K. Kt's 3d.31. P. takes Q. Kt.[A]
32. B. takes B. P. (ch.)32. Kt. to K's 4th.
33. B. takes Kt. (ch.)33. R. takes B.
34. Q. takes R. (ch.)34. K. to R's sq.
35. R. takes Q.35. P. to K's 7th.
36. Q. to K's 8th. (ch.)36. R. takes Q.
37. P. takes R., becomes a Queen (ch.), and wins.

[A] If Black had taken the B. with K. B. P. at this point, the following moves show that he would have equally lost:—

31. P. takes B.
32. Q. takes Kt.32. P. takes P. (ch.)
33. K. to R's sq.33. Q. takes Q. P.
34. Q. to K. Kt's 3d. (ch.), and wins.

GAME THE NINTH.
The Giuoco Piano.

An attentive examination of the eight separate methods of reply to your second move of K's Kt. to B's 3d in the antecedent games, will have enabled you to understand that four at least of these defences, viz.: P. to K. B's 3d, B. to Q's 3d, Q. to B's 3d, and B. to Q. B's 4th, are untenable and injurious for the game of the second player, and that the remaining four, if not absolutely bad for him, are unsatisfactory, because against the best attack, they leave the balance of advantage in favor of the party playing first.

It is now time to consider the consequences to both parties when Black, abandoning the objectionable or uncertain modes of play he has hitherto adopted, shall answer with the move which the best authorities at length concur in recommending as the proper one, i.e. 2. Q's Kt. to B's 3d. Upon his playing thus, you have the choice of three good moves: in the first place to play 3. K's B. to Q. B's 4th, as in the present game; secondly, 3. P. to Q's 4th; and thirdly, P. to Q. B's 3d. The two latter of which will form the subjects of games hereafter.

WHITE. BLACK.
1. P. to K's 4th.1. P. to K's 4th
2. K. Kt. to B's 3d.2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th.3. K. B. to Q. B's 4th

It is generally admitted that Black's third move is the best he can adopt; and the opening now formed is that which the Italians have entitled the "Giuoco Piano;" an opening, less attacking than many others, but one perfectly safe for both players, and therefore always in request, and which usually generates games of the most solid and instructive kind.

4. P. to Q. B's 3d. 4. K. Kt. to B's 3d. (best)
5. P. to Q's 4th. 5. P. takes P.
6. P. to K's 5th. 6. P. to Q's 4th. (best)
7. K. B. to Q. Kt's 5th. 7. K. Kt. to K's 5th.
8. B. takes Kt. (ch.) 8. P. takes B.
9. P. takes P. 9. B. to Q. Kt's 3d.
10. Castles.10. Q. B. to K. Kt's 5th.
11. Q. B. to K's 3d.11. Castles.
The game is equal.

Variation I.
Beginning at Black's 6th move.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. K. Kt. to B's 3d.
5. P. to Q's 4th. 5. P. takes P.
6. P. to K's 5th. 6. K. Kt. to K's 5th.
7. K. B. to Q's 5th. 7. Kt. takes K. B's P.
8. K. takes Kt. 8. P. takes P. (dis. ch.)
9. K. to Kt's 3d. 9. P. takes Q. Kt's P.
10. Q. B. takes P.10. Q. Kt. to K's 2d.
11. Q. to her B's 2d.11. P. to Q's 3d.
12. B. to K's 4th.12. Kt. to K. Kt's 3d.
13. Q. Kt. to Q's 2d.13. P. to Q. B's 3d.
14. Q. R. to Q's sq.
And the game appears to me in your favor.

Remember that at your move 14. you must not, instead of playing Q. R. to Q's sq., take the Kt. with your B., and afterwards play 15. Q. Kt. to K's 4th, because after taking your B. with K. R's P., he might move Q. B. to K. B's 4th, and thus prevent you moving your Kt. advantageously.

Variation II.
Beginning at White's 6th move.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. K. Kt. to B's 3d.
5. P. to Q's 4th. 5. P. takes P.
6. P. takes P. 6. B. to Q. Kt's 5th. (ch.)
7. B. to Q's 2d. 7. B. takes B. (ch.)
8. Q. Kt. takes B. 8. P. to Q's 4th.
9. P. takes P. 9. Kt. takes P.
10. Q. to her Kt's 3d.10. Q. Kt. to K's 2d.
The game is even.

Variation III.
Beginning at White's 5th move.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. K. Kt. to B's 3d.
5. Castles. 5. Kt. takes K's P.
6. Q. to K's 2d. 6. P. to Q's 4th.
7. B. to Q. Kt's 5th. 7. Castles.
8. B. takes Q. Kt. 8. P. takes B.
9. Kt. takes K. P. 9. Q. B. to Kt's 2d.
10. P. to Q's 4th.10. K. B. to Q. Kt's 3d.
There is no advantage on either side.

GAME THE TENTH.

WHITE. BLACK.
1. P. to K's 4th.1. P. to K's 4th.
2. K. Kt. to B's 3d.2. Q's Kt. to B's 3d.
3. K. B. to Q. B's 4th.3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d.4. K. Kt. to B's 3d.
5. P. to Q's 3d.5. P. to Q's 3d.
6. P. to Q's 4th.6. P. takes P.
7. P. takes P.7. B. to Q. Kt's 3d.
8. Q. Kt. to B's 3d.8. Q. B. to K. Kt's 5th
9. P. to Q's 5th.9. Q. Kt. to K's 4th.
The game is equal.

GAME THE ELEVENTH.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. P. to Q's 3d.
5. P. to Q's 4th. 5. P. takes P.
6. P. takes P. 6. B. to Q. Kt's 5th. (ch.)
7. B. to Q's 2d. 7. B. takes B. (ch.)
8. Q. Kt. takes B. 8. K. Kt. to B's 3d.
9. Q. to her Kt's 3d. 9. Castles.
10. Castles.10. Q. Kt. to R's 4th.
11. Q. to her B's 2d.11. Kt. takes B.
12. Q. takes Kt.12. Kt. takes K's P.
13. Kt. takes Kt.13. P. to Q's 4th.
14. Q. to K's 2d.14. P. takes Kt.
15. Q. takes P.

There is little difference in the positions, but your men are better disposed for immediate action, and you have the advantage of a Knight against a Bishop.

Variation I.
Beginning at White's 7th move.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. P. to Q's 3d.
5. P. to Q's 4th. 5. P. takes P.
6. P. takes P. 6. B. to Q. Kt's 5th. (ch.)
7. K. to his B's sq. 7. Q. B. to K. Kt's 5th.
8. Q. to her R's 4th. 8. B. takes Kt.
9. P. takes B. 9. Q. to her 2d.
10. K. B. to Q. Kt's 5th.10. Castles.
11. K. to Kt's 2d.

And it appears to me that White has an unquestionable advantage.

GAME THE TWELFTH.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d. 4. P. to K. B's 4th.
5. P. to Q's 4th. 5. K. B. P. takes K. P.
6. K. Kt. takes K. P. 6. B. to Q. Kt's 3d.
7. Q. to K. R's 5th. (ch.) 7. P. to K. Kt's 3d.
8. B. to K. B's 7th. (ch.) 8. K. to B's sq.
9. Q. B. to K. R's 6th. (ch.) 9. Kt. takes B.
10. Q. takes Kt. (ch.)10. K. to his 2d.
11. B. takes Kt's P.11. Kt. takes Kt.
12. Q. to K. Kt's 5th. (ch.), and you must win.

GAME THE THIRTEENTH.

WHITE. BLACK.
1. P. to K's 4th.1. P. to K's 4th.
2. K. Kt. to B's 3d.2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th.3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d.4. Q. to K's 2d.
5. P. to Q's 4th.5. B. to Q. Kt's 3d.
6. P. takes K. P.6. Kt. takes P.
7. Kt. takes Kt.7. Q. takes Kt.
8. Castles.8. P. to Q's 3d.
9. K. to R's sq.9. Q's B. to K's 3d.
White has a little the better game.

Variation.

1. P. to K's 4th.1. P. to K's 4th.
2. K. Kt. to B's 3d.2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th.3. K. B. to Q. B's 4th.
4. P. to Q. B's 3d.4. K. B. to Q. Kt's 3d
5. P. to Q's 4th.5. P. to Q's 3d.
6. P. takes P.6. P. takes P.
7. Q. takes Q. (ch.)7. K. takes Q.
8. B. takes K. B's P.,
and you have the better game.

GAME THE FOURTEENTH.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K's Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K's B. to Q. B's 4th. 3. K's B. to Q. B's 4th.
4. Castles. 4. P. to Q's 3d.
5. P. to Q. B's 3d. 5. Q's B. to K. Kt's 5th.
6. Q. to her Kt's 3d. 6. Q's B. takes Kt.
7. B. takes K. B. P. (ch.) 7. K. to K. B's sq.
8. K. Kt. P. takes Q. B. 8. Q. to K. B's 3d.
9. K. B. to K. R's 5th. 9. P. to K. Kt's 3d.
10. K. B. to Kt's 4th.10. B. to Q. Kt's 3d.
11. Q. to her sq.
You have the better game.

GAME THE FIFTEENTH.

WHITE. BLACK.
1. P. to K's 4th. 1. P. to K's 4th.
2. K. Kt. to B's 3d. 2. Q. Kt. to B's 3d.
3. K. B. to Q. B's 4th. 3. K. B. to Q. B's 4th.
4. P. to Q's 3d. 4. P. to Q's 3d.
5. P. to Q. B's 3d. 5. Q. to K. B's 3d.
6. Q. B. to K. Kt's 5th. 6. Q. to K. Kt's 3d.
7. Castles. 7. Q. B. to K. Kt's 5th.
8. Q. Kt. to Q's 2d. 8. K. Kt. to K. R's 3d.
9. P. to Q. Kt's 4th. 9. K. B. to Q. Kt's 3d.
10. P. to Q. R's 4th.10. P. to Q. R's 4th. (best)
11. P. to Q. Kt's 5th.11. Kt. to Q's sq.
12. K. B. to Q's 5th.
The game is in your favor.