Retrograde Analysis
Chess Problems
by Leo Mano
AR13 - Leo Mano (2x5) 4k3 - 2p1P1p1 - 8 - K1p1p3 - 8 - 8 - 8 - 8 Monochromatic. No piece has ever moved from a white square to a black square and vice-versa. Which and where is the invisible piece? Solution:
Black b8. The black on c5 came from a7 via b6. When black moved b6xc5, the white already on b4 to reach a5. Hence, there's no way to the white go to b8. The b8 was never captured and it's on the board now. |
(p)2000-2001 by Leo Mano. Rio de Janeiro - RJ, Brazil. |