r1b5/p1pqpk1r/n2p1n1b/1p2p2p/2P2PpP/NP1P2K1/P3P1P1/R1BQ1B1R b - - 2 18
FEN state: r1b5/p1pqpk1r/n2p1n1b/1p2p2p/2P2PpP/NP1P2K1/P3P1P1/R1BQ1B1R b - - 2 18 ; Best move: e5f4
The current state of the chess board is: Black rook at a8 and black bishop at c8. Black pawn at a7, black pawn at c7, black queen at d7, black pawn at e7, black king at f7 and black rook at h7. Black knight at a6, black pawn at d6, black knight at f6 and black bishop at h6. Black pawn at b5, black pawn at e5 and black pawn at h5. White pawn at c4, white pawn at f4, black pawn at g4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at d3 and white king at g3. White pawn at a2, white pawn at e2 and white pawn at g2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. Black to move.