Matsumoto Trap

The game was derived from a variation of the King's Gambit Accepted.

1. e4, e5
2. f4, exf4
3. Nf3, Be7
4. Bc4, Bh4+
5. Nxh4 ....

The more popular variation is 5. g3 fxg3, 6. 0-0 gxh2+, 7. Kh1 with a potential attack on f7.

5. .... Qxh4+
6. Kf1, Nf6
7. d3? ....

White's best line of defense should have been 7. h3.  Now, if 7....Nxe4 Qe2 with a good pin on Black's King.

7. .... Ng4
8. Qe2 ....

Now, Black is poised for attack....

8. .... Nxh2+
9. Kg1, f3!
10. gxf3? ....

White takes the trap.  One defensive move is 10. Qf2 Qxf2, 11. Kxf2 Ng4++, 12. Kf1  (Not 12. Kxf3 because of 12....Ne5 which favors Black)  fxg2+, 13. Kxg2 and Black's attack fizzles out.

10. .... Qg3+
11. Qg2, Nxf3+
12. Kf1, Qe1 mate.