1.Bb3 Sxc4+ 2.Ka4 cxb3# (MM)

1.b3 cxb3 2.b4 Sxc4# (MM)

Active sacrifice (black)

Active sacrifice (black, delayed)

AntiZielElement (B1, unblock)

Blocking piece replacement (bP-bP)

Chumakov theme (p-b, simplified, 2, 2)

Exchange of moves (W1/W2)

JT Onkoud 50 theme

Play on the same square (B1, 2)