r2qkb1r/3npb1p/p4np1/1pp5/1PpPpP2/6PP/PQN2K2/R1B2BNR w - - 4 19
FEN state: r2qkb1r/3npb1p/p4np1/1pp5/1PpPpP2/6PP/PQN2K2/R1B2BNR w - - 4 19 ; Best move: b4c5
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black knight at d7, black pawn at e7, black bishop at f7 and black pawn at h7. Black pawn at a6, black knight at f6 and black pawn at g6. Black pawn at b5 and black pawn at c5. White pawn at b4, black pawn at c4, white pawn at d4, black pawn at e4 and white pawn at f4. White pawn at g3 and white pawn at h3. White pawn at a2, white queen at b2, white knight at c2 and white king at f2. White rook at a1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 19. White to move.