[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Hard Caterpillar Mate in 6"] [Black "?"] [Result "*"] [Annotator "peter"] [SetUp "1"] [FEN "8/1p2N3/1p6/1pkBK3/1p6/8/P7/8 w - - 0 1"] [PlyCount "11"] [SourceVersionDate "2020.04.01"] {[#]} 1. Ng6 b3 2. a3 b4 (2... b2 3. Nf4 b4 4. a4 b5 (4... b3 5. Nd3#) 5. a5 { threatening Ne6 mate} b3 6. Nd3#) 3. a4 b5 4. a5 {the threat is mate in 2 by Nf4 and Nd6} b6 5. Nf8 bxa5 6. Nd7# *