Daily Chess Improvement: Mate in 3! Chess tactic, Puzzle Solving White to move and mate in 3 K Gavrilow
1 Nf6 Kxh1
2 Ng4 Bh2
3 Nxf2#
1 Nhxf2 Bxf2
2 Kxf2 Kh1
3 Ng3#
3. … Kh2 but you got half of the concept right, kings have low potential mobility from a corner square.