@BigDoggProblem Here is the problem updated. Can you solve it now? (change: black knight added on e8)
Sure.
+wRc6, +wBh1, +wKh2 --> 1.Rxc8#
wK and wB can be several other places.
diagram at solve time:
I'll rework that one.
Yes. This was what I had in mind all along. My fault, sorry.
Yes. This was what I had in mind all along. My fault, sorry.
Don't worry about it. When you compose, sometimes the problems get cooked. Happens to everyone.
, 
.
, 2x
, and 
.
The best I can do is +bBd1, Pf2. Comp says black has mate in 4 even with white to move.
wPb5, a6, Bc7
bNa8
Last move was a5-a6#
The best I can do is +bBd1, Pf2. Comp says black has mate in 4 even with white to move.
This is possible. I have verified it. I have also found by myself 2 extra answers which I immediately fixed by adding an extra bishop on a4 in order for the solution to be unique. I also verified my initial solution to still be valid after this addition. It may make the intended solution easier for you, but the challenge remains.
Bonus question for Puzzle #25: what are the 2 extra solutions could you have presented that I have fixed?
The best I can do is +bBd1, Pf2. Comp says black has mate in 4 even with white to move.
This is possible. I have verified it. I have also found by myself 2 extra answers which I immediately fixed by adding an extra bishop on a4 in order for the solution to be unique. I also verified my initial solution to still be valid after this addition. It may make the intended solution easier for you, but the challenge remains.
+Ph4, Be2
1.KxP Kh2 and ...g5 next.
If 2.Nxg7, then 2...Bf6# is also a possibility.
, 
, .
.
+wNd7
Last moves were -1.Nf6xNd7 Nc5-d7 etc.
Try: +wNc6? but there is no legal retraction:
Bravo! That was indeed my solution!