A unit (Ks included) when standing one square directly behind another unit of its own side, moves as that other unit. A pawn on its back rank is immobile unless moving as its front piece. Officers with the power of pawns may capture e.p. K and R may only castle if moving with their own power.
No. 1560 Gregor Werner
original - 16.11.2020
white Bf1c1 Ke1 Qd1 Ph2g2f2e2d2c2b2a2 Sg1b1 Rh1a1
black Bf8c8 Ke8 Qd8 Ph7g7f7e7d7c7b7a7 Sg8b8 Rh8a8