r2qkbr1/6p1/n4p2/ppQppbP1/2BP3p/BP5N/P1P2P1P/RN2K2R w q - 1 19
FEN state: r2qkbr1/6p1/n4p2/ppQppbP1/2BP3p/BP5N/P1P2P1P/RN2K2R w q - 1 19 ; Best move: c5b5
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at g7. Black knight at a6 and black pawn at f6. Black pawn at a5, black pawn at b5, white queen at c5, black pawn at d5, black pawn at e5, black bishop at f5 and white pawn at g5. White bishop at c4, white pawn at d4 and black pawn at h4. White bishop at a3, white pawn at b3 and white knight at h3. White pawn at a2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 19. White to move.