Is there a bug in puzzle 12? The southwestmost N should be an H?
i think there are 2 solutions for ||O on page right before the exam... >>>>>>>>>>>>>>>>212122 <- solved using 2 length-2 lines that hit the top left 2 , then elim the 3x 2s122212 <- solved using 2 length-2 lines that hit each pair of 2s, the elim the 1s