Mate in 4 [KRR vs knnpp] Explained (CGCP 00882)

Consider this 'KRR vs knnpp' chess problem generated by the program, Chesthetica, using the relatively new computational creativity approach called the 'DSNS'.

3R2nk/3n1R2/8/4pK2/8/8/4p3/8 w - - 0 1

Software: Analyze This (Pro)