SINGAPORE – This week’s ST×NLB Crossword was constructed by my puzzle co-editor, NLB librarian Sasha Tan, who is part of a team of 40 volunteers from both organisations. Here’s his message to solvers:For National Day, I wanted to put together a puzzle that felt suitable for the occasion while offering something a little different from our usual crosswords, which already contain plenty of local references. After toying around with a few theme ideas, I landed on this one because it struck me as a fun and accessible way of tying things together, not to mention one that would feel familiar…