r1q2bnr/p3p1pp/n2pkp2/8/b1pP1P1P/PPP5/6P1/RNBQ1KNR b - - 0 13
FEN state: r1q2bnr/p3p1pp/n2pkp2/8/b1pP1P1P/PPP5/6P1/RNBQ1KNR b - - 0 13 ; Best move: c4b3
The current state of the chess board is: Black rook at a8, black queen at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at e7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at d6, black king at e6 and black pawn at f6. Black bishop at a4, black pawn at c4, white pawn at d4, white pawn at f4 and white pawn at h4. White pawn at a3, white pawn at b3 and white pawn at c3. White pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. Black to move.