a) 1...Bh5-e2 2.Bd1-b3 Be2-f1 3.Le1*f1-g1 Nf7-c1 4.Lg1*g5-g6 + Nc1-d3 # b) 1...Nf7-b5 2.Sd1-b2 Nb5-d1 3.Le1*d1-c1 Bh5-d1 4.Lc1*c5-c6 + Bd1-f3 # Locust in Dentist theme. White B/S opens the battery-line with the first move. Black masked-battery creation. Exchange of functions of the black pieces N/B: - Sacrifice of black with the Locust move along the pin-line. - The defense of black from Locust - a block of King's opposite square - uses a special nature of Locust piece. Double-check mate.