Quarry Reborn

Mining pattern change from

_1 _2 _3 _4 _5
_6 _7 _8 _9 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25

To:

25 > 24  > 23  > 22 > 21
                       V
10 >  9  >  8  >  7   20
^                 V    V
11    2  > [1]    6   19
^     ^           V    V
12    3  <  4  <  5   18
^                      V
13 < 14  < 15  < 16 < 17