1. Td7?
1. Te7! (2. Sf5+ Txf5 3. Sg4+ Kxf3 4. Le2+ Kg3
5. Le1+ Lf2#; 2. - gxf5 3. Sg4+/Sg6+ etc.)
1. - dxc4
2. Td7! (3. Le1 ~ 4. Lf2+) bxc2
3. Ld4+ Kd2
4. Lb2+ Ke3
5. Td3+! cxd3
6. Sc4+ Lxc4+
7. Lc1+! d2#

Not usual (LV)
Again a piece with a mate absolutely unexpected... Who would think about a battery composed of bishop a2 and pawn d5 as a mating one? (JL)

2. - b2 3. Le1 b1D/T 4. Sc4+ Lxc4 5. Te2+ Lxe2#
2. - Sc5 3. Le1 Se4/Sd3 4. Tc3/Td3 5. Lf2+.