UPDATE: I suppose I should add fair warning. I tested this puzzle after 5 pints of Guinness last night, and I was very pleased with the logic that I thought made this solve uniquely. I'm not so confident that this has a unique solution now, but I have no time to re solve it at this moment in time as apparently I'm wanted on television. Given the issues I had with uniqueness making the bloody thing I'll not be surprised if someone finds a second solution here...
Rules: (as taken from the WPC instructions)
Place some tiles (of size 1x2 squares) in the grid, with numbers 1 and 2 each. Tiles can be rotated but they cannot touch each other, not even diagonally. Numbers outside the grid indicate the sum of all the numbers in the corresponding row/column.
#214 2-1 Tiles – rated hardAll puzzles © Tom Collyer 2009-12.