Tuesday puzzles: masyu (new)
Puzzle 1
0765 Masyu 10×10 RS 31-03-15
Draw a single closed loop that travels horizontally and vertically, passing through all circles in the grid. The loop must make a 90° angle in all black circles and go straight for at least two cells in both directions before turning again. The loop must go straight through all white circles and make a 90° angle in at least one of the neighbouring cells.