Blancs: Rc1, Dh2, Td1, Fg5, Cc3,
                 a2, b2, c2, e4, g6.

Noirs: Rg8, Da5, Tc8, Tf8, Fe7, Cc4, Cf6,
                 a7, b4, d6, e6, g7.

Solution :1) Cd5 – Tf7
                 2) Fxf6 – gxf6
                 3) gxf7+ (Gain).