r1bqkbr1/2ppn3/p4p1p/6p1/p1n1p2P/2PBP1P1/1P2KP2/1RB3NR b - - 0 18
FEN state: r1bqkbr1/2ppn3/p4p1p/6p1/p1n1p2P/2PBP1P1/1P2KP2/1RB3NR b - - 0 18 ; Best move: e4d3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at c7, black pawn at d7 and black knight at e7. Black pawn at a6, black pawn at f6 and black pawn at h6. Black pawn at g5. Black pawn at a4, black knight at c4, black pawn at e4 and white pawn at h4. White pawn at c3, white bishop at d3, white pawn at e3 and white pawn at g3. White pawn at b2, white king at e2 and white pawn at f2. White rook at b1, white bishop at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. Black to move.