rnk4r/3p4/np1b2p1/pb4Np/P1p1P1P1/2NPB2P/2P1QP2/1R1K1BR1 b - - 4 23
FEN state: rnk4r/3p4/np1b2p1/pb4Np/P1p1P1P1/2NPB2P/2P1QP2/1R1K1BR1 b - - 4 23 ; Best move: c4d3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at c8 and black rook at h8. Black pawn at d7. Black knight at a6, black pawn at b6, black bishop at d6 and black pawn at g6. Black pawn at a5, black bishop at b5, white knight at g5 and black pawn at h5. White pawn at a4, black pawn at c4, white pawn at e4 and white pawn at g4. White knight at c3, white pawn at d3, white bishop at e3 and white pawn at h3. White pawn at c2, white queen at e2 and white pawn at f2. White rook at b1, white king at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 23. Black to move.