411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. d4/4...Nxd4/5. Nxe5/5...Qe7/6. Nxf7/6...d5/7. Bxd5/7...Nf6/8. Nxh8/8...Bg4/9. Bf7/9...Kf8/10. f3/10...Nxe4/11. fxg4
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Rybasov Gambit rd kd nl pd pd pd qd bl pd pd bd nd nd pl pl pl pl pl pl rl nl bl ql kl rl
Rybasov Gambit
11. fxg4??
After this move Black's victory is inevitable after the move 11... Ng3+!
12. Kf2 is a worse option as after 12... Ndf5+! White has to sacrifice a queen and the bishop and get checkmated on e3 with the queen.
12. Kd2 is a better option, but it doesn't save the game. Here Black out of nowhere goes 12... Nb3+!!, and after 13. cxb3 (13. axb3 leads to 13... Qe3#) Black is the whole 12 points of material down, but after 13... Rd8+ 14. Kc3 Bb4+ 15. Kc2 Qe4+ 16. Qd3 Qxd3# White loses.
Theory table
.
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d4 Nxd4 5.Nxe5 Qe7 6. Nxf7 d5 7. Bxd5 Nf6 8. Nxh8 Bg4 9. Bf7+ Kf8 10. f3 Nxe4 11. fxg4
References