my bad
Impossible Puzzle (Part III)

when i set it up in houdini with 1.ne4 i misplaced a piece. and i was looking at it from there. my mistake lol

lol, i already tried without the engine and failed sweetie.
The use of houdini was to confirm the truth of this statement...
"Guys, the answer is 1. Ne4. Houdini found a mate in 3 for each and every black reply. There is no point asking "What if 1... Bh6?" there is a mate in 3 for every move."

Maybe 1 Ne4 is also a solution. But my solution (1. Rc5 ) I think is also correct. I discovered lately this is not the solution.

I can not see 1 Ne4 is the solution. Please complete the solution using: 1 Ne4 Bb4, 2........ what is white's next move?

Post #81 has this solution which has an error.
1 Ne4 Bb4 (correct)
2 Ndc5 Bxc3 (bad move which allows mate next). What if black plays 2... Ba5
There is no mate in 1 here.
For example: 3 Rb8+ Bd8 or 3 R(c3) any, Bc3

1. Ne4 leads to mate in 4. My solution, 1 Rc5 is the right one. Please refute the solution that I showed because I refuted the solution given with 1 Ne4.
True_Beginner please take note.

Cogwheel posted: "The answer is 1. Ne4, I just confirmed it with an engine. There, I win the prize. I said so on post #81."
Please read my post #155. The solution there has an error, re: blacks' second move which is 2....Bxc3 allowing the mate next move. What would be white's mating move if black played 2...Ba5.
ne4 and ng5 first two for white,w/ bxb mate or qf6 mate or ng7 mate depending on black b. moves