6. K's Knight to K's B's 3d.6. Queen to K's B's 3d.

Bringing out the Knight is good play; you not only threaten to win his Bishop, but you afford yourself an opportunity of castling whenever it may be needful. Black would have played better in retiring the Bishop from the attack to Queen's Knight 3d square than in supporting it with the Queen.

7. Knight takes Bishop.7. Queen takes Knight.

Both parties played well in their last moves. You rightly took off the Bishop, because supported by the Queen he menaced your Queen's Kt's Pawn, and Black properly retook with his Queen instead of the Knight, because having a Pawn ahead, it was his interest to exchange off the Queens.

8. Q's Knight to Q's 2d.8. K's Knight to B's 3d.

You played correctly here in not exchanging Queens, and also in protecting your Bishop and your King's Pawn, both of which were attacked by the adverse Queen; but all this might have been done without impeding the movements of any of your Pieces, by simply playing Queen to King's 2d sq.; as it is, the Knight entirely shuts your Queen's Bishop from the field. Black properly brings another Piece to the attack of your King's Pawn:—

9. K. B's Pawn to B's 3d.9. Q's Knight to King's 4th.

In protecting the King's Pawn with your K. Bishop's Pawn, you are guilty of a very common error among young players; as you improve, you will find that it is rarely good play to move the K. Bishop's Pawn to the third square—in the present instance, for example, you have deprived yourself of the power of castling, at least for some time, since the adverse Queen now commands the very square upon which your King, in castling on his own side, has to move. Black's last move is much more sensible. He again attacks your Bishop, and by the same move brings his Q's Knight into co-operation with the King's, on the weak point of your position:—

10. Pawn to Q. Kt's 3d.10. Q. takes Queen's Rook.

This is a serious blunder indeed. In your anxiety to save the threatened Bishop, which you feared to withdraw to Q. Kt's 3d sq., on account of the adverse Knight's giving check at your Queen's 3d square, you have actually left your Q's Rook en prise! Black takes it, of course, and having gained such an important advantage, ought to win easily.