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.
2<∧7>∧5∧8>∨1<∧3∨4<∨6<∨9∨8<∨9>∨7∨6>∨3>∧2∧1<∧5>∧4∨6>3<45<8<92<7>14>∨1<∧6∨9>∨7>∨5∧8>∧2<∧3∧3>∧2>∧1∧4<∨6<∨7∨9>∨8>∨5∧5<8<93>2<46>1<77>∧5<∧8∨1<∧4<∧6∨3<∧9>∨2∧9>∨6>∨3∨2<∧5>∧1∧7>∨4<∨8∨1<4>27<9>85>3<6