Duration: 53.6s

The helmet lies on the far side of this chasm. But be warned, the bridge is protected by an ancient Gnomish trap. There is a precise formula we must follow so as not to trigger the mechanism. What'’s the formula?It'’s quite simple. Starting from the center, use odd-numbered blocks only, moving forward with each step, except for every fifth step, which must be a lateral move. Left or right, it matters not, so long as the leader and the laggard remain equidistant. After which, proceed. Again, odd-numbered blocks only. However, at the midpoint we switch to even-numbered blocks. Same pattern, except now a lateral move after the fourth step, until we reach the three-- I-- I may have... put my foot on the bridge. Didn'’t realize that'’s where it technically started.