ECO C42 · Petrov's Defense
Petrov's Defense: Three Knights Game
The position after 1.e4 e5 2.Nf3 Nf6 3.Nc3.
Petrov's Defense: Three Knights Game
5 half-moves in · 1 named continuation
8♜
♞
♝
♛
♚
♝
♜
7♟
♟
♟
♟
♟
♟
♟
6
♞
5
♟
4
♙
3
♘
♘
2♙
♙
♙
♙
♙
♙
♙
a1♖
b
c♗
d♕
e♔
f♗
g
h♖
1. e4 e5 2. Nf3 Nf6 3. Nc3
Petrov's Defense: Three Knights Game is filed under ECO C42, a variation of Petrov's Defense. It is the position after 1.e4 e5 2.Nf3 Nf6 3.Nc3 — 5 half-moves in, with Black to move. From here theory names one continuation, Nc6.