Cool Puzzle

Here's a puzzle I made that I think has a fun solution good luck solving it!

This was a very creative puzzle. Nice!!

it was cool. Mates in endgame sand taking advantage of the pawn h2 move is incredible

Thx 

After this, black offered draw and done

The puzzle in #1 has a nice sacrifice but also many more than 1 solution. Here is a version where only 1 first move wins!

In post #8   1.Bh3 would lock the Black king out of d8, d7, e7, e6, e5, f5, f4, g4 and g3 and leave only h4 and h3 for the king to get through.  Once the Black king gets to h4 White plays Bc8 and puts h3 off limits.  White has plenty of time to queen on a8 and then finish off Black.  Since the Black king is locked out of h3 that leaves the Black pawn to try to get through, but it would have to go in unsupported and thus allow White to black Bxh3 and then safely return to c8 after Black plays the king to h4.

Sadly this does not work on chess.com

after the bishop is taken black will intentionally time out and the system will claim draw due to insufficient material vs time out

works on otb tho

As far as the puzzle in post 9 goes, somebody playing Black on Chess.com who sees it ahead of time may time out immediately while the greater number that may not see it until Nf1 would wait until then to time out.  There are even a number of people that would be honorable enough to resign or play it out.

As you say, OTB rules (FIDE, US Chess, etc.) would award the win to White if Black timed out.