IE 4th Year • OR 1 Board Notation

OR 1 — Interactive Board Practice & Verifier

Problem:

Table 0

Auto-mark x on exhausted cells

Entries Check:

TC = —

Your TC:

Tip: Type 0 if $r + c - 1$ needs a basic $0\checkmark$.

Stepping-Stone Loop

Tap any unoccupied cell below to see its closed loop (+ / − corners) on the grid:

Ready

Row Reduction (RR)