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<∨8>∨7∨9>∨5>∧1∧2<∧6>∧4∨2<∧4<∧5∨3<∨6<∧7∨9>∨8>∨1∧6<9>12<8>45<7>31<∧5>∨3∧8<∨9>∨6∨7>∧4>∨2∧4>∧2<∧6∧7>∨1<∧5∨8>∨3<∨9∨8>7<94>2<36>1<57>∧3<∨8∨5>∧4<∨9∨1<∧2<∧6∧9>∨1<∧2∧6>∨3<∧8∨4<∨5<∧7∧5<6>41<7>23<9>8