1n2q2r/2pp1k2/r3pn2/1p4p1/pbPPb2p/P1N3P1/R3PP1P/2BQKB1R w K - 0 18
FEN state: 1n2q2r/2pp1k2/r3pn2/1p4p1/pbPPb2p/P1N3P1/R3PP1P/2BQKB1R w K - 0 18 ; Best move: a3b4
The current state of the chess board is: Black knight at b8, black queen at e8 and black rook at h8. Black pawn at c7, black pawn at d7 and black king at f7. Black rook at a6, black pawn at e6 and black knight at f6. Black pawn at b5 and black pawn at g5. Black pawn at a4, black bishop at b4, white pawn at c4, white pawn at d4, black bishop at e4 and black pawn at h4. White pawn at a3, white knight at c3 and white pawn at g3. White rook at a2, white pawn at e2, white pawn at f2 and white pawn at h2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. White to move.