Black to move and win material:
Highlight the following space for the solution:
1. ... R7+4 +
2. A5-4 H6+4 ( threatening H4+3 mate )
3. R4=6 (hobbling the horse ) R7-2
4. A4+5 P5+1
5. R6=5 R7+2
6. A5-4 R7-7+ and wins the rook ( the minimum damage for red )
(7. R2-7 ? H4+3+ 8. K5+1 R7+6 checkmate )
Black to move and win material:
Highlight the following space for the solution:
1. ... R7+4 +
2. A5-4 H6+4 ( threatening H4+3 mate )
3. R4=6 (hobbling the horse ) R7-2
4. A4+5 P5+1
5. R6=5 R7+2
6. A5-4 R7-7+ and wins the rook ( the minimum damage for red )
(7. R2-7 ? H4+3+ 8. K5+1 R7+6 checkmate )