r1bqkb2/p2pp1p1/1p1P1n2/1Nn5/4p2r/1p2PNp1/P1P2PPP/R1BRK3 b - - 3 18
FEN state: r1bqkb2/p2pp1p1/1p1P1n2/1Nn5/4p2r/1p2PNp1/P1P2PPP/R1BRK3 b - - 3 18 ; Best move: e4f3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at d7, black pawn at e7 and black pawn at g7. Black pawn at b6, white pawn at d6 and black knight at f6. White knight at b5 and black knight at c5. Black pawn at e4 and black rook at h4. Black pawn at b3, white pawn at e3, white knight at f3 and black pawn at g3. White pawn at a2, white pawn at c2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white rook at d1 and white king at e1. Both players have exhausted their castles. Half move number is 3. Full move number is 18. Black to move.