1rbqkb1r/p1pp1ppp/1pn1pn2/8/1Q6/1PPBP1PP/P2PNP2/RNB1K2R w KQ - 5 10
FEN state: 1rbqkb1r/p1pp1ppp/1pn1pn2/8/1Q6/1PPBP1PP/P2PNP2/RNB1K2R w KQ - 5 10 ; Best move: b4a4
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at b6, black knight at c6, black pawn at e6 and black knight at f6. White queen at b4. White pawn at b3, white pawn at c3, white bishop at d3, white pawn at e3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at d2, white knight at e2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 5. Full move number is 10. White to move.