Are some of them unsolvable? Mine says has to include the captcha 52447 & chess move Rxg6+ & leap year and add up to 25. From the captcha + the chess move alon

Are some of them unsolvable? Mine says has to include the captcha 52447 & chess move Rxg6+ & leap year and add up to 25. From the captcha + the chess move alone I am already above 25... I tried subtracting, did not work. Anyone have an idea here?