The pieces in hand are different for each position. Can you mate with these pieces in hand? (Source: 谷川流寄せの法則 第2章 詰む形、詰まない形の法則 第12問) (Source: Koji Tanigawa's Laws of Endgame Section 2, problem 11)
Kōji Tanigawa's Laws of Endgame! (Advanced) Exercise #2.12: 32K+21N+11L+43P+33P+23P+14P vs Dragon: Rook in Hand5