[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Puzzle found on Chess Tactics"] [Black "?"] [Result "*"] [Annotator "Hoetmer,Michel"] [SetUp "1"] [FEN "8/p3B2p/4p1pb/1R6/P1pk2P1/7r/4KP1P/8 w - - 0 1"] [PlyCount "21"] [EventDate "2022.08.25"] [SourceVersionDate "2022.08.25"] {[%evp 0,21,-69,50,212,215,215,237,224,239,243,243,266,295,280,305,394,393,372, 389,433,458,476,487] [#]} 1. g5 (1. Bf6+ {The alternative doesn't bring any dividends} Ke4 (1... e5 $4 {Totally wrong is} 2. Rxe5 $18 {and there is no escape from the discovered check.}) 2. Rc5 Rxh2 3. Rxc4+ Kd5 4. Rd4+ Kc6 $11) 1... Bg7 2. Bf6+ Bxf6 3. gxf6 Rh4 4. Rf5 $1 {Blocks the black rooks path!} (4. Kf3 $2 e5 5. Rb7 Rf4+ $19) 4... exf5 5. f7 Re4+ 6. Kd1 {only move for a win.} ( 6. Kf1 c3 7. f8=Q c2 8. Qa3 Kc4 9. Qb2 Kd3 10. Qa3+ Kd2 11. Qd6+ $11) (6. Kf3 c3 7. f8=Q c2 8. Qb4+ Kd3 9. Qa3+ Kd2 $11) 6... c3 7. f8=Q a5 {and white wins because his king controls the promotion square. For instance:} 8. Qd8+ Kc4 9. Qb8 Kd3 10. Qb5+ Kd4 11. Qxa5 *