[Event "?"] [White "Lucena"] [Black "?"] [Site "?"] [Round "?"] [Result "*"] [Date "2025.01.07"] [SetUp "1"] [FEN "1K6/1P1k4/8/8/8/8/2R5/r7 w - - 0 1"] [PlyCount "13"] [GameId "2131437164367921"] [SourceVersionDate "2024.12.18"] {[%evp 0,13,497,497,497,485,547,548,527,557,567,577,842,1002,1022,1539]} 1. Rd2+ {First we force the black King further away} Ke7 (1... Kc6 2. Kc8 Rh1 3. b8=Q Rh8+ 4. Rd8 {wins easily}) 2. Rd4 {This mysterious move is the key idea. White "builds a bridge" to allow his king to escape and use the Rook as a shield from the checks.} Rc1 3. Ka7 Ra1+ 4. Kb6 Rb1+ 5. Kc6 Rc1+ (5... Rb2 6. Rd5 Rb1 7. Rb5) 6. Kb5 Rb1+ 7. Rb4 {and the pawn queens} *