SudokuGT
Greater-than sudoku: inequality signs instead of givens.
Greater-than sudoku: no givens, only inequality signs between neighbouring cells. Fill in 1–N per row, column and box so every inequality holds.
3<∧5<∧9∨6>∨4<∨8∧2>∧1<∧7∨6<∨7>∧4∨2>∧1<∧9∨5<∧8>∨3∧2<8>13<5<79>6>48<∨9>∨5∧4>∧3<∧6∨7>∨2>∧1∧1<∧3<∧7∨9>∨8>∨2∧4<∧5<∨6∧4<6>21<7>58>3<97>∧2<∧3∧5<∧9>∨1∧6>∨4<∧8∨9>∨4<∨6∧8>∨2<∧3∧1<∧7>∧5∨5>1<87>6>43<9>2