caption: Rules: Place the numbers 1 through 9 in the 81 boxes, but do not let any number
exif: {"Image DocumentName": "Rules: Place the numbers 1 through 9 in the 81 boxes, but do not let any number", "Image ImageDescription": "appear twice in any row, column, or 3\ue1293 box . Usually you start with a subset of the cells labeled, and try to finish it", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}