r2q1kr1/1pp1p2p/p2p3b/P2PnpP1/3N1B1P/6P1/1nPNPKB1/R2Q1b1R b - - 3 18
FEN state: r2q1kr1/1pp1p2p/p2p3b/P2PnpP1/3N1B1P/6P1/1nPNPKB1/R2Q1b1R b - - 3 18 ; Best move: b2d1
The current state of the chess board is: Black rook at a8, black queen at d8, black king at f8 and black rook at g8. Black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at h7. Black pawn at a6, black pawn at d6 and black bishop at h6. White pawn at a5, white pawn at d5, black knight at e5, black pawn at f5 and white pawn at g5. White knight at d4, white bishop at f4 and white pawn at h4. White pawn at g3. Black knight at b2, white pawn at c2, white knight at d2, white pawn at e2, white king at f2 and white bishop at g2. White rook at a1, white queen at d1, black bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 18. Black to move.