Black to move and win:
Highlight the space below for solution:
1. …H1+3 ( threatens H3-5 checkmate )
2. C2=7 (xH) ( 2. R4-1 H3-5+ 3. R4=5 H6+5 (x R) checkmate ) R7+1+
3. K4+1 C3-2 (x C)
4. R4=8 ( against the double cannon checkmate ) H6+7 with an Arabian mate next.
Black to move and win:
Highlight the space below for solution:
1. …H1+3 ( threatens H3-5 checkmate )
2. C2=7 (xH) ( 2. R4-1 H3-5+ 3. R4=5 H6+5 (x R) checkmate ) R7+1+
3. K4+1 C3-2 (x C)
4. R4=8 ( against the double cannon checkmate ) H6+7 with an Arabian mate next.