Numbering is as follows:
01 02 03 04 05
06 07 08 09 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25
To solve, select blocks in this order:
06, 03, 12, 09, 18, 15,
08, 17, 14, 23, 20, 13,
16, 07, 14, 25, 18, 21,
12, 01, 08, 05, 14, 07,
18, 15, 24, 17, 08, 11,
02, 13, 22, 11, 08, 19,
10, 13, 04, 15, 08, 11, 22,
13
