Tuesday puzzles: magic summer
Puzzle 1
1199 Magic summer 7×7 RS 03-11-15
Place a digit from 1 to 4 into some cells so that each digit appears exactly once in each row and column. The digits in the grid connect with horizontally and vertically adjacent digits to form multi-digit numbers. The numbers outside the grid indicate the sums of the numbers appearing in the respective rows and columns, where empty cells separate numbers.