Recently I contributed few puzzles to
Czech Republic National Academic Championsh
which was held on 15th November 2014. As competition is over now and with consent of Karel Tesar (Organizer) I would like to share my contribution on my blog. Here is the 1st one.
Place numbers in the grid such that each row,column and 3*3 box contain the numbers 1-9. Additionally, Shaded cells can contain only odd digits (1,3,5,7,9)