Place the digits 1-6 once each into every row, column, and 2x3 box. Digits on an arrow have the DIFFERENCE of the digit in the attached circle. An inequality symbol ‘points’ to the lower digit. An indicated diagonal is read as a 'Look and Say' clue, where the first digit indicates the amount of times the second digit appears along the diagonal. Digits along the blue line must have the same DIFFERENCE within each box it passes through.