rn2kb1r/1b1ppp1n/pp5p/1qp3pQ/4P3/N2P2P1/P1PB1P1P/2R1KBNR w Kq - 0 13
FEN state: rn2kb1r/1b1ppp1n/pp5p/1qp3pQ/4P3/N2P2P1/P1PB1P1P/2R1KBNR w Kq - 0 13 ; Best move: a3b5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at d7, black pawn at e7, black pawn at f7 and black knight at h7. Black pawn at a6, black pawn at b6 and black pawn at h6. Black queen at b5, black pawn at c5, black pawn at g5 and white queen at h5. White pawn at e4. White knight at a3, white pawn at d3 and white pawn at g3. White pawn at a2, white pawn at c2, white bishop at d2, white pawn at f2 and white pawn at h2. White rook at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 0. Full move number is 13. White to move.