Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d4/4...exd4/5. O-O/5...Nxe4/6. Re1

Scotch Gambit Accepted rd bd qd kd bd rd pd pd pd pd pd pd pd nd bl pd nd nl pl pl pl pl pl pl rl nl bl ql rl klTwo Knights Defence Scotch Gambit Accepted 6. Re1! White pins the greedy knight on e4. As f5 would be too slow and Qe7 is still a major piece pin, d5! is the only sensible followup. d5 is only temporary, however, as Bxd5! followed by Nc3! taking advantage of both pins on the heavy pieces equalizes. An immediate Nc3 is an option as well, though less common. Theory table 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4.d4 exd4 5. O-O Nxe4 6. Re1 678Main Line... d5Bxd5 Qxd5Nc3 Qa5∞