rn2k1nr/4qpp1/p2b3p/2p1p3/bpp1P1P1/PP6/3PQP1P/RNB1KBNR w KQkq - 0 13
FEN state: rn2k1nr/4qpp1/p2b3p/2p1p3/bpp1P1P1/PP6/3PQP1P/RNB1KBNR w KQkq - 0 13 ; Best move: b3a4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black knight at g8 and black rook at h8. Black queen at e7, black pawn at f7 and black pawn at g7. Black pawn at a6, black bishop at d6 and black pawn at h6. Black pawn at c5 and black pawn at e5. Black bishop at a4, black pawn at b4, black pawn at c4, white pawn at e4 and white pawn at g4. White pawn at a3 and white pawn at b3. White pawn at d2, white queen at e2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. White to move.