rnbk1r2/2p2p2/p2q2p1/p3p2p/1P1BPPn1/8/P1PN1NPP/R4RK1 w - - 1 20
FEN state: rnbk1r2/2p2p2/p2q2p1/p3p2p/1P1BPPn1/8/P1PN1NPP/R4RK1 w - - 1 20 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8 and black rook at f8. Black pawn at c7 and black pawn at f7. Black pawn at a6, black queen at d6 and black pawn at g6. Black pawn at a5, black pawn at e5 and black pawn at h5. White pawn at b4, white bishop at d4, white pawn at e4, white pawn at f4 and black knight at g4. White pawn at a2, white pawn at c2, white knight at d2, white knight at f2, white pawn at g2 and white pawn at h2. White rook at a1, white rook at f1 and white king at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.