r1b1qk2/ppp4p/3p2p1/1Nn1rp2/P3P1PP/2K1PPR1/1PP5/1R1QBBN1 b - - 1 23
FEN state: r1b1qk2/ppp4p/3p2p1/1Nn1rp2/P3P1PP/2K1PPR1/1PP5/1R1QBBN1 b - - 1 23 ; Best move: c5a4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at e8 and black king at f8. Black pawn at a7, black pawn at b7, black pawn at c7 and black pawn at h7. Black pawn at d6 and black pawn at g6. White knight at b5, black knight at c5, black rook at e5 and black pawn at f5. White pawn at a4, white pawn at e4, white pawn at g4 and white pawn at h4. White king at c3, white pawn at e3, white pawn at f3 and white rook at g3. White pawn at b2 and white pawn at c2. White rook at b1, white queen at d1, white bishop at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 23. Black to move.