This one is deceptively difficult. I think black can take the knight, though I admit, I looked at other moves first before settling on this one:
1. …..dc3 2. Rd8 Rfd8
And now black is threatening Bd3. White can guard d3 with the rook from h3 or d1, he can play Ka1 (Kc1 fails to cb3 with a different skewer), or he can move the queen. None of these save white:
3. Qb3 c2 4. Kc1 Be2 and there is no real defense to the coming Rd1. Black wins similarly if white plays Qa5 or even Qc1. As for the rook moves:
3. Rd1 Rd1 4. Qd1 c2 wins a piece overall. Or
3. Rh3 Rd2 and if the queen moves to b3, a5 or c1, black just plays c2 again.
dXc3? Far too complicated after that.
1…d:c3 2. R:d8 Rf:d8 and the threat of …Bd3 leaves white with two unpalatable alternatives
3. Rh3 Rd2 and white must leave the Q where she is, else c2+ and Rd1#
3. Qb3 c2+ 4. Kc1 Be2 threatens …Rd1+
I can’t find it.
This one is deceptively difficult. I think black can take the knight, though I admit, I looked at other moves first before settling on this one:
1. …..dc3
2. Rd8 Rfd8
And now black is threatening Bd3. White can guard d3 with the rook from h3 or d1, he can play Ka1 (Kc1 fails to cb3 with a different skewer), or he can move the queen. None of these save white:
3. Qb3 c2
4. Kc1 Be2 and there is no real defense to the coming Rd1. Black wins similarly if white plays Qa5 or even Qc1. As for the rook moves:
3. Rd1 Rd1
4. Qd1 c2 wins a piece overall. Or
3. Rh3 Rd2 and if the queen moves to b3, a5 or c1, black just plays c2 again.
Finally:
3. Ka1 Rd2 wins again.
move black Queen to c7