Mate em 7 (Final)

[Event "?"] [Site "?"] [Date "2016.06.20"] [Round "?"] [White "Final"] [Black "?"] [Result "*"] [FEN "8/8/1r5p/6p1/4R1P1/8/p1K5/k7 w - - 0 1"] [PlyCount "13"] [SetUp "1"] [Source "?"] [SourceDate "2016.06.20"] 1. Re1+ Rb1 2. Rc1 h5 (2... Rxc1+ 3. Kxc1 h5 4. gxh5 g4 5. h6 g3 6. h7 g2 7. h8=Q#) 3. gxh5 g4 4. h6 Rxc1+ 5. Kxc1 g3 6. h7 g2 7. h8=Q# *