rnb1k1nr/5ppp/4p3/pPpp4/1Q2q3/2N1P3/P2P1PP1/R1B1KBNR b KQkq - 0 10
FEN state: rnb1k1nr/5ppp/4p3/pPpp4/1Q2q3/2N1P3/P2P1PP1/R1B1KBNR b KQkq - 0 10 ; Best move: e4b4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at e6. Black pawn at a5, white pawn at b5, black pawn at c5 and black pawn at d5. White queen at b4 and black queen at e4. White knight at c3 and white pawn at e3. White pawn at a2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, 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 10. Black to move.