Chess - Programming - FEN (Forsyth-Edwards Notation) - Test Enpassant capture gives check

"8/8/1k6/2b5/2pP4/8/5K2/8 b - d3 0 1", 1440467, 6

5b1k/8/8/2pP4/8/K7/8/8 w - c6 0 1    <- The correct perft(1) is 5!