Promoted the foot soldiers to create a new army

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digispin

I had 3 rooks, traded off two, then promoted my remaining pawns to knight, bishop, queen. I wanted to mate him with my knight.  I decided not to try because there was no increment and a likely stalemate or run out of time.  I'm not sure there's a way to mate the opponent's king with all 4 (or 5 w/king) pieces participating with at least one exclusive square.

ChessDude009

you just did it tho