| 12. Q. Kt. to Q's 2d. | 12. Q. to K. R's 4th. (ch.) |
| 13. Q. Kt. to K. B's 3d. (best) | 13. Q. B. to K. Kt's 5th. |
and now, play as you can, Black must gain a decided advantage by taking the K. Kt. with Kt., &c.
VARIATION,
Beginning at White's 11th move.
| WHITE. | BLACK. |
| 1. P. to K's 4th. | 1. P. to K's 4th. |
| 2. K. Kt. to B's 3d. | 2. K. Kt. to B's 3d. |
| 3. K. B. to Q. B's 4th. | 3. Kt. takes P. |
| 4. Q. to K's 2d. | 4. P. to Q's 4th. |
| 5. Kt. takes K. P. | 5. K. B. to Q. B. 4th. (best) |
| 6. P. to Q's 3d. | 6. Q. P. takes B. |
| 7. Q. takes Kt. | 7. Castles. |
| 8. Q. takes doubled P. | 8. Q. to K's 2d. |
| 9. P. to K. B's 4th. | 9. Q. Kt. to B's 3d. |
| 10. Q. to K's 4th. | 10. K. R. to K's sq. |
| 11. Q. Kt. to Q's 2d. | 11. Q. to K. R's 5th. (ch.) |
| 12. P. to K. Kt's 3d. | 12. Q. to K. R's 4th. |
| 13. Q. Kt. to K. B's 3d. | 13. Q. B. to K. B's 4th. |
| 14. Q. to K's 2d. (best) | 14. Q. B. to K. Kt's 5th. |
| 15. K. R. to B's sq. | 15. Q. Kt. to Q's 5th. |
| And Black must win. | |
GAMES
ILLUSTRATIVE OF PETROFF'S DEFENCE.
Game I.—Mr. Morphy plays without seeing the Chess-board or men, against M. Potier, at Paris.
