The King as a major player

• I perhaps should have taken a screen shot about 10 moves earlier ...
• I had a good central Pawn defense
• There was a column opened up in H rank but it was Rook to Rook there
• I opened up the A column
• The White Pawns defended the left flank and the White King moved to the right flank to help White Rook taking advancing Black Pawn. 
• Then Rook to Rook exchange leaving just the Kings and the Pawns
• White Pawn advanced and promoted to Queen on the right flank (Pawn protected by King)
• I really didn't need the 2nd Queen but I did advance another Pawn to promotion (kind of overboard, I suppose) followed by Checkmate