No. 3.

WHITE. BLACK.
1. B. to K. B's 7th. (ch.)1. Kt. takes B.
2. Kt. to Q. B's 4th.2. Kt. moves.
3. Kt. to Q's 6th. (checkmate.)

No. 4.

WHITE. BLACK.
1. Kt. to K. Kt's 3d.1. K. B. takes P.
2. Kt. to K. B's 3d. (ch.)2. K. to K. B's 5th.
3. Q. to K. R's 4th. (checkmate.)

No. 5.

WHITE. BLACK.
1. Q. to K's 6th. (ch.)1. P. takes Q.
2. B. takes P. (ch.)2. K. takes R.
3. Kt. (at R's 7th.)
to K. Kt's 5th. (ch.)
3. Q. takes Kt.
4. Kt. to K. Kt's 5th. (checkmate.)

No. 6.

WHITE. BLACK.
1. Kt. to K. R's 4th.1. K. to Q's 4th.
2. Q. to Q's 6th. (ch.)2. K. to K's 5th.
3. Q. to Q's 4th. (checkmate.)

No. 7.