r3k3/p1pp1pr1/b1n1p3/1p3P1p/PbPP2p1/3KPq1P/8/RN1QBBNR w q - 1 21
FEN state: r3k3/p1pp1pr1/b1n1p3/1p3P1p/PbPP2p1/3KPq1P/8/RN1QBBNR w q - 1 21 ; Best move: g1f3
The current state of the chess board is: Black rook at a8 and black king at e8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black rook at g7. Black bishop at a6, black knight at c6 and black pawn at e6. Black pawn at b5, white pawn at f5 and black pawn at h5. White pawn at a4, black bishop at b4, white pawn at c4, white pawn at d4 and black pawn at g4. White king at d3, white pawn at e3, black queen at f3 and white pawn at h3. White rook at a1, white knight at b1, white queen at d1, white bishop at e1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 21. White to move.