rnb1k3/2pr3p/2qp2p1/N3p3/P1Q2B2/N2p2P1/1PP2P1P/R3K2R w KQq - 3 21
FEN state: rnb1k3/2pr3p/2qp2p1/N3p3/P1Q2B2/N2p2P1/1PP2P1P/R3K2R w KQq - 3 21 ; Best move: c4g8
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black king at e8. Black pawn at c7, black rook at d7 and black pawn at h7. Black queen at c6, black pawn at d6 and black pawn at g6. White knight at a5 and black pawn at e5. White pawn at a4, white queen at c4 and white bishop at f4. White knight at a3, black pawn at d3 and white pawn at g3. White pawn at b2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white king at e1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 3. Full move number is 21. White to move.