Ruy Lopez traps: 6 mistakes at 1600-1800 Elo

October 9, 2026 · 4 min read

At 1600-1800, everyone knows 3.Bb5. The trouble starts a few moves later. The bishop on b5 pins the knight on c6, and both sides forget it: Black lets the pin cost a piece, White leaves the bishop hanging to a queen on the fifth rank.

We took the Lichess blitz and rapid games from August 2026 where both players were rated 1600 to 1800, followed the Ruy Lopez move by move, and had Stockfish check every position where many players took the same wrong turn. Every line below was verified by the engine. All six examples are told from White’s side.

Part 1: punish it

Three Black mistakes, three punishments. Each one wins material, and White players at this level do not always see it.

1. 5...d6, and the pinned knight falls

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3, 25% of Black players play 5...d6 (478 games reached this position). It looks solid, but the knight on c6 now stays pinned for a long time. 6.d4! exd4 7.cxd4 Bb6 8.d5! and the knight has no good square: it cannot move without exposing the king.

White players did well here: 72% found 6.d4, and 75% found 8.d5 after 7...Bb6. After 8...O-O 9.dxc6, White is a piece up. Black should castle with 5...O-O, and the game is balanced.

5...d6? 6.d4 exd4 7.cxd4 Bb6 8.d5! wins the pinned knight.

2. 5...d5, and the knight on e4 is stranded

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1, 15% of Black players hold the knight with 5...d5 (233 games reached this position). But the knight stays on the e-file in front of the king. 6.d3! hits it, and it has no good way back: after 6...Nf6 7.Nxe5, White threatens Nxc6 with a discovered check from the rook on e1.

Only 35% of White players found 6.d3. 47% took 6.Nxe5 instead, and the game is level again. Black should retreat with 5...Nd6, as 70% of Black players did.

5...d5? and 6.d3! leaves the e4 knight with nowhere to go.

3. 4...a6, and e5 falls

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4, 11% of Black players ask the bishop with 4...a6 (3,076 games reached this position). It is a move from the main lines, played one move too late. 5.Bxc6+! bxc6 6.dxe5, and the e5 pawn is gone: the knight that defended it has been traded.

After 6...dxe5 7.Qxd8+ Kxd8 8.Nxe5, White is a clean pawn up and Black has lost the right to castle. 64% of White players took on c6, and 95% then played 6.dxe5. Even the best defence, 6...Ne7, leaves Black a pawn down. Black should take with 4...exd4 instead.

4...a6? 5.Bxc6+ bxc6 6.dxe5 wins a pawn.

Part 2: avoid it

Now the White mistakes that cost the most in the Ruy Lopez at 1600-1800. Each one looks normal, and each one loses material.

4. 6.Nxe5, and the queen comes to d4

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.Bxc6 dxc6, 27% of White players take the pawn with 6.Nxe5 (186 games reached this position). It is a trap. 6...Qd4! hits the knight on e5 and threatens mate on f2 at the same time. White cannot cover both, and loses the knight.

Black players saw it: 58% found 6...Qd4. Play 6.Nbd2 instead. The e5 pawn is not really free, and White keeps a calm position.

6.Nxe5? Qd4! forks e5 and f2. Play 6.Nbd2 instead.

5. 6.d3, and the bishop on b5 hangs

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Qg5, 22% of White players play 6.d3 (81 games reached this position). The pawn attacks nothing and defends nothing. Meanwhile the queen on g5 looks along the fifth rank, straight at the bishop on b5. 6...Qxb5, and Black is a piece up.

No Black player missed it. Play 6.Bc4 instead. Move the bishop out of the queen’s line first, and White is better.

6.d3? Qxb5. Play 6.Bc4 instead.

6. 6.Qh5+, a check that loses a piece

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Bxc6 dxc6 5.Nxe5 Qd4, 61% of White players give 6.Qh5+ (66 games reached this position). After 6...g6, every one of them went on with 7.Nxg6. But 7...hxg6 8.Qxg6+ Kd8 leaves White with three pawns for a piece, which is not enough, and the black king walks to safety.

Play 6.Nf3 instead. After 6...Qxe4+ 7.Qe2, the queens come off and the game is balanced.

6.Qh5+? g6 7.Nxg6 hxg6 loses a piece. Play 6.Nf3 instead.

What to take away

When the black knight on c6 is pinned, push d4 and d5 to hit it.
A knight on e4 with a rook on e1 is a target. Hit it with d3 before taking on e5.
If the knight on c6 is gone, check who still defends e5.
Before you grab e5, look at ...Qd4 and the f2 square.
A queen on g5 sees b5. Move the bishop before it falls.

These patterns come from many games between players at your level, not from a theory book. Your own games have patterns too, and they are probably not the same ones. Chess X-Ray finds the moves where you lost your advantage in your chess.com or Lichess games, groups them by opening, and turns them into lessons you replay until they stick.