Lucena Position: Building the 4th-Rank Bridge

Endgame Blueprint & Geometric Rules

• First check the enemy King one file further away (1. Re1+!), lift your Rook to the 4th rank (2. Re4!), zigzag your King out of the promotion square, and interpose your Rook as a bridge.
• As Tarrasch famously noted: Philidor shows what to steer toward when defending, and Lucena shows the exact winning finish line when attacking.
• Practice all 4 progressive Acts (Blueprint -> Sword -> Shield -> 90s Boss Gauntlet) inside ChessMinds Endgame Throne Hall T13.

Club Blunder Traps (Syzygy Proven)

• Lichess Syzygy proves 1. Rh1?? or lifting to the wrong rank 1. Rf6?? lets Black hold a draw! Only 1. Re1+! followed by 2. Re4! builds the winning bridge.
• Lichess 7-piece Syzygy confirms Move 1 Rh1?? immediately flips the outcome to "0.00 Draw".

FAQ

What is the main rule of Lucena Position: Building the 4th-Rank Bridge (K+R+P vs K+R)?

First check the enemy King one file further away (1. Re1+!), lift your Rook to the 4th rank (2. Re4!), zigzag your King out of the promotion square, and interpose your Rook as a bridge.

Is Lucena Position: Building the 4th-Rank Bridge a theoretical win or draw with best play?

In this canonical K+R+P vs K+R setup (6K1/4k1P1/8/8/8/7r/8/5R2 w - - 0 1), Lichess 7-piece Syzygy Tablebase proves it is a theoretical WIN (DTM 41 plies) starting with Re1+!

How can I drill Lucena Position: Building the 4th-Rank Bridge against Stockfish 19 offline?

Open ChessMinds on iPhone, iPad, or Mac -> Labs -> Endgame Throne -> Hall T13. Clear Standard Practice (0 Focus Hearts) to earn 2 Stars, then unlock the 90-second zero-mistake Ironman Trial for 3 Stars.