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1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 d6 6.d4 Nxd4 7.Nxd4 exd4 8.Qxd4 c5 · ECO C71
Ruy Lopez: Noah's Ark Trap is a chess opening that arises after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 d6 6.d4 Nxd4 7.Nxd4 exd4 8.Qxd4 c5. It is classified C71 in the ECO system, and the position after these moves has white to move. The Ruy Lopez, also called the Spanish Game, develops the bishop to b5 where it pressures the knight defending Black's e5 pawn. It is the oldest continuously played opening at the top level and remains the main battleground of 1.e4 e5, valued because White gets a lasting positional grip rather than a quick attack.
This position can also be reached by another move order, including 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4 Nxd4 9.Nxd4 exd4 10.Qxd4 c5.
The bishop on b5 creates a long-term question about the c6 knight that shapes the whole game. Most main lines lead to slow manoeuvring positions with a closed centre, where both sides regroup pieces behind their pawn chains before committing to a plan.
Players who prefer strategic, long-game chess over immediate tactics, and who are comfortable playing positions where the plan matters more than the calculation.
This line is a variation within the Ruy Lopez family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 d6 6.d4 Nxd4 7.Nxd4 exd4 8.Qxd4 c5.