Here I have a forced promotion for a knight
lichess.org/analyse/wdj8pmac/blackpromoting to a knight in karifa's game is probably still faster
when promoting to a queen, the immediate mate threat on g1 can be prevented with Qf1, Kf4, etc.
still wins easily of course
i got a chess problem for you guys
lichess.org/analyse/d35q1ca2/blackafter 22.Qg2 (only move or black checkmate on h1) how does black win?
This took me a long time to find lol, and it's not forced (just a possible queen sac if white doesn't see the checkmate) but here it is:
22. Qg2 d2
23. Qxc3 Bd3+
24. Re2 d1=Q #
if white doesn't take on on c3 (23. Qxc3) and instead Bxd2, then:
23. Bxd2 Bd3+
24. Re2 Qxg2+
25. Kxg2 Bxe2
winning white's rook. So, it's a win-win situation for black. I think that's the best, there may be one better
actuallly ^^ that wouldn't be (an immediate) checkmate looking at it again, however it puts black in an awfully nice position! :D
in your first analysis, after 24... d1=Q white king can go on g2 square
in your second analysis better is :
23 Bxd2 Bd3+
24.Re2 Bxe2+
and now if :
25. Qxd2 Qh1+ mate
25. Kxe2 (or Ke1) Qxg2 (winning the queen and threatening Re8+
there is a checkmate in the first analysis. I will let you find it.
checkmate with pawn!
i'm actually quite proud of it, after losing a rook to a knight - i'm so poor i always get that against the sicilian - i also sacrificed a full knight to get his king out in the bushes...
the topping on the cake is the mate with pawn on f7.
lichess.org/analyse/m8ir9a2wwell it's not really an unusual one but is still a pretty rook sacrifice checkmate