[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [Annotator "Peter"] [SetUp "1"] [FEN "r6r/8/4k3/p1p5/1b2N3/6N1/1P4P1/2KR1B2 w - - 0 34"] [PlyCount "11"] [SourceVersionDate "2020.02.02"] {} 34. Bc4+ Ke5 (34... Ke7 35. Nf5+ Kf8 36. Rd7 {leads to a quick mate}) 35. Rd5+ Kf4 36. Rf5+ Ke3 37. Nd6 {Now the threat is Nf1+ followed by Rd5 mate. Black can only prevent this my giving up a rook.} (37. Rf3+ {was the game continuation which also wins. This line is excellent practice in coordinating your pieces.} Kd4 38. Nd6 {the right idea a move too late} Rhf8 39. Ngf5+ Ke5 40. Nf7+ {Consider the problem solved if you saw this line this far} Kf6 41. N5d6+ Kg7 42. Ne4 Rfe8 (42... Be1 43. Kd1 Bh4 44. Rf4 Rxf7 (44... Be7 45. Rg4+ Kh7 46. Nf6+ Bxf6 47. Bd3#) 45. Rxf7+) (42... Rfb8 43. Rg3+ Kf8 44. Nfd6 ( 44. Ne5)) 43. Rg3+ Kf8 44. Nfd6 Reb8 45. Rg8+ Ke7 46. Rg7+ Kd8 47. Be6 Ra7 48. Rxa7 Rb7 49. Rxb7 Bd2+ 50. Kxd2 c4 51. Rd7#) 37... Rad8 (37... Bd2+ 38. Kc2 { etc}) (37... Raf8 38. Nf1+ Kd4 39. Rd5#) (37... Rh1+ 38. Nxh1 {simplest and compeltely winning} (38. Kc2 Bd2 39. Rf3+ Kd4 40. Ne2+ Ke5 41. Nf7+ Ke4 42. Kxd2 {leads to mate.})) 38. Nf1+ Kd4 39. Rd5# *