r1bqk1nr/p3p2p/2p2pp1/1p1p4/2PPPb1N/P7/n3KPPP/RN3B1R w kq - 0 15
FEN state: r1bqk1nr/p3p2p/2p2pp1/1p1p4/2PPPb1N/P7/n3KPPP/RN3B1R w kq - 0 15 ; Best move: a1a2
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 knight at g8 and black rook at h8. Black pawn at a7, black pawn at e7 and black pawn at h7. Black pawn at c6, black pawn at f6 and black pawn at g6. Black pawn at b5 and black pawn at d5. White pawn at c4, white pawn at d4, white pawn at e4, black bishop at f4 and white knight at h4. White pawn at a3. Black knight at a2, white king at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 15. White to move.