Hello my idea is to promote to knights and let my opponent take them with their pawns to avoid stalemate and give mate with the last knight, or queen, because I think both promotions work for the last pawn in the g file.
I posted this study about 3 weeks ago.
en.lichess.org/study/GIKZlwEFAmazing stuff! The knight promotion one is beautiful. And the second fun study is also great.
sv.lichess.org/study/GIKZlwEFThis study has 10 Qs. In chess 9 would be the maximum if no pawns on board.
:)
It does not matter how many pieces are on the board. The joke is how many pieces black has and how much material black has but white has forced mate in 18.