The Lucena Position in Chess: The Bridge Technique

Here's our full guide to the Lucena position. Learning to play endgames well is fundamental if you want to understand chess at a deeper level.

Here's what this guide covers.

• The Lucena position and the bridge technique, explained by French champion Tigran Gharamyan.
• Two exercises to test yourself.
• The Philidor position.
• How the Philidor position turns into the Lucena position.
• Where to go next to keep building your endgame knowledge.

Why Are Rook Endgames So Important?

Simple. Rook endgames come up more often than any other kind of endgame, by a wide margin. Mastering them gives you an extra weapon in plenty of middlegames too, since you'll know exactly when trading pieces leads toward a favorable rook endgame.

Here's a second good reason to learn rook endgames. In them, activity matters more than material. Working on rook endgames pushes you toward mastering dynamic, active chess, or at least a good step in that direction.

Finally, mastering endgames gives you another weapon in the middlegame. You can steer the position straight into a winning endgame, which opens up extra ways to win your games.

Watch It in Action First

French champion Tigran Gharamyan recorded a video lesson on this important technique, the one that lets you win rook endgames when you're up a pawn, bridge technique included. The English version isn't ready yet. Join the waitlist and we'll send it to you when it's out.

Until then, let's go through Lucena and the bridge technique step by step.

The Starting Lucena Position

Lucena showed us how to win a rook endgame when you're up a pawn, in cases where the opponent's king fails to stop the pawn from advancing. Here, we've already pushed our pawn all the way to the seventh rank, and we reach a position of this type.

White's pawn is one step from promoting on the eighth rank, but the white king had to shelter from the black rook's checks by standing in front of its own pawn. The whole exercise comes down to moving that king out of the way to clear a path for the pawn.

The Technique

First things first. Push the black king back to win some space.

1.Rd2+!

The black king has two options. It could try to approach the white pawn by heading to the light square e6. But that shields the white king from the black rook's checks, and the white king can then step across to e8, guaranteeing the pawn promotes. The right choice is different.

1...Kc7

Once two files separate the black king from the pawn, it's tempting to try bringing the white king out too. But 2.Ke7 Re1+ 3.Kf6 Rf1+ 4.Kg7 Rg1+ 5.Kh7 Rf1 6.Kg7 Rg1+ makes no progress.

To handle this position properly, we need the bridge technique.

The Bridge Technique

White brings the rook up to get ready to shield the king from the black rook's checks.

2.Rd4!!

And that's already winning for White. White will slowly walk the king down the board, and the white rook, posted on the fourth rank, will step in front of it to block the black rook's checks. Worth noting, in some cases the white rook shifts to the fifth rank to do the same job instead.

Before we move on to the exercises, a bit of history. Luis Ramírez de Lucena was a strong Spanish chess player from the late 15th century, whose 1497 book, packed with 150 chess problems, is the oldest surviving printed chess treatise. Ironically, the position that carries his name doesn't actually appear in it. It wasn't published until 1634, by the Italian writer Alessandro Salvio.

Two Exercises to Test Yourself

Exercise 1

White to play and win.

You might point out that Black also has a pawn this time, and you'd be right. Even so, it's a technique straight from this article that lets White win the game.

The Solution to Exercise 1

White takes advantage of the black king's awkward position to build a neat bridge.

1.Rc5+!! Kf4 2.Ra5!!

And Black can't stop the a-pawn from reaching the end of the board and becoming a queen.

2...Rb1+ 3.Ka6 doesn't help Black either. White wins.

Exercise 2

White to play and win.

This time White is up two pawns. Even so, winning this position isn't as simple as it looks, because the white king is well and truly stuck on b8. Can you see the way out?

The Solution to Exercise 2

Once you realize the d7 pawn is actually getting in the way, you've made a big step toward the solution.

1.Rc8+!! Kxd7 2.Rc4

White is now ready to check on d4 to push the black king back, and the bridge is already built.

Neat, right?

The Philidor Position

We couldn't write an article about Lucena without bringing up Philidor. Philidor showed how to evaluate a position where one side is up a pawn, but that pawn is blocked by the opposing king.

Here's the basic position.

Black to move.

White is indeed up a pawn, but unlike in the Lucena position, the black king sits in front of the pawn. Black's correct plan for holding the draw is to force the white pawn to advance before switching to perpetual checks against the white king.

The right move is 1...Rg6!!

Black cuts the white king off from the sixth rank. After 2.c6, the rook calmly heads back to g1 and starts checking along the first rank. The white king has nowhere to hide.

When the Philidor Position Turns Into the Lucena Position

Let's go back to that basic Philidor position.

Black to move.

We just showed you the right technique, cutting the white king off from the sixth rank by putting the black rook on g6. Now let's see what happens if Black gets it wrong and plays 1...Rd1+?? (quick reminder on chess notation, ! marks a good move and ? marks a bad one).

The white king now gets access to the sixth rank with 2.Kc6. Worse for Black, White is about to drive the black king away entirely. 3.Rh8+ forces the black king to step aside, and with its king's help, the white pawn can slowly advance until we reach the famous Lucena position.

Take the time to really understand these theoretical rook endgame positions. They're genuinely useful, and they show up all the time in practical games.

Where to Go From Here

That's our guide to the Lucena position in chess. We hope you found it useful.

• Discover the celebrated Reti study, a legendary example of what a lone king and pawn can do.
• Learn 5 chess strategies to keep improving your game.
• Get familiar with zugzwang, another idea that shows up constantly once you reach the endgame.
• Our free 14-day program is in the works. Join the waitlist to get it first.
• Daily exercises are coming in our exercise book. Join the waitlist to get it first.