Post Sun Aug 04, 2013 9:50 pm

Are these legal?

Please explain your answers. I can't find how to do the PGN, so I am posting the FEN.
1) B3k3/1ppppppp/p7/8/8/8/PPPP4/3K4 w - - 0 1
2) B3k3/1ppppppp/8/p7/8/8/PPPP4/3K4 b - - 0 1
3) 2R5/1B6/R7/5r1q/8/6K1/8/7k b - - 0 1
4) 8/8/p1pp3p/1p6/3K2p1/8/PPP1kPPP/8 w - - 0 1
Broken pencils are pointless.