SudokuGT
Greater-than sudoku: inequality signs instead of givens.
How to play
Greater-than sudoku: no givens, only inequality signs between neighbouring cells. Fill in 1–N per row, column and box so every inequality holds.
1<∧3<∧5∧7>∧4<∨8∨9>∨6>∨2∧5<∨6<∧8∨9>∨2<∧4∨7>∨1<∧3∧4<9>63<5>21<7<87>∧2>∨1∧4<∧8>∨3∧6<∨9>∨5∧8>∧1<∧2∧6>∨3<∧9∨5>∨4<∧7∨9>5>42<7>13<8>63<∨8<∨9∨5<∨6<∧7∨4>∧2>∧1∧2<∧7>∨3∧1<∧9>∨6∨8>∨5>∨4∧6>4<78>1<52<3<9