Description: ISBs with various options, in different SHB sections
Category:    difficult

Block counts:
	EPB: 3
	IDB: 5
	ISB: 4
	SHB: 3
	SPB: 1

Block sequence: SHB, IDB, IDB, EPB, ISB, SHB, IDB, EPB, ISB, SPB, SHB, IDB, IDB, ISB, EPB, ISB
