Ok another plan:
Every piece used and promoted, and no rook capture prevents stalemate next move. Rook moves along the second rank.
BTW if anyone objects I think only pawnattack has a viable solution: Since no move at all, even a blunder will lead to mate. The pawn chain with one bishop is also good, but less in points.
technically im wrong though since 9 bishops of the same colour is possible and can't checkmate but my idea could possibly work
No, the game had already ended. Read the rules of chess.
5.2 b. The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘dead position’. This immediately ends the game, provided that the move producing the position was legal.
There are many different types of chess competitions, from informal games in the park to online games, right on up to the World Championship itself. There are no standard rules, and even when a local organization or national federation has strict guidelines, tournament directors often stray from the designated path.
Those are FIDE rules. Clearly this site doesn't follow that FIDE rule, as it would have allowed that additional move. So here, at least on this site, it would have been okay under Challenge Section 1, page 1, posts #1.0a. and #6.0a. following that "a standard chess game," would necessarily mean on here.
Can you have such a complex position that it's not obvious that a dead position has occured? Something a bit more complex than this for example?
521 points of material to make a legal mate-next-move puzzle!! 
That's 56 queen's (504) + 4 minor's (12) + a rook (5) = 521
527 points of material to make a legal mate-in-1... IN 3 DIFFERENT WAYS!! Somebody please top that 
729 - If we're going for impossible....
529 points of material to make a legal mate-in-1... IN 3 DIFFERENT WAYS!! Somebody please top that
You counted it wrong. It's 527.
529 points of material to make a legal mate-in-1... IN 3 DIFFERENT WAYS!! Somebody please top that
You counted it wrong. It's 527.
Well spotted, 57 queens = 9x57= 513 + 3 minor pieces = 522 + rook = 527, yep, ammendment made!
729 - If we're going for impossible....
729!? 64 queens = 64x9 = 576
Also to consider... The awesome 3 knight's checkmate!
on the subject of KNNN vs K...
White to play and draw, Herbstmann and Kubbel 1937
729 - If we're going for impossible....
729!? 64 queens = 64x9 = 576
Well, I did say I was going for impossible :)
The +153 extra bonus points are for taking over the entire board.
59 Q + 3 minors = 540.
Who knows, we might be playing 100 player bughouse....
That definitely wins.
replace the knight with a rook?
542 points, then.