[Event "Shakhmatnaya kompozitsia (version)"] [Site "?"] [Date "2016.??.??"] [Round "?"] [White "(5) Sergiy Didukh (UKR)"] [Black "?"] [Result "1-0"] [Annotator "3rd Prize"] [SetUp "1"] [FEN "8/3K1b2/kP6/8/4B3/8/NR6/4q3 w - - 0 1"] [PlyCount "19"] [EventDate "2016.??.??"] 1. Nb4+ Ka5 2. Nc6+ Ka6 $1 3. b7 Be8+ $1 {Black's plan is to sacrifice his bishop and queen for stalemate.} ({No time for} 3... Qxe4 4. b8=N#) ({After} 3... Be6+ {the wK uses the bishop as a shield.} 4. Ke8 $1 Bf7+ 5. Kf8 $18) 4. Kc8 Bd7+ 5. Kxd7 (5. Kd8 $2 Qh4+ 6. Ne7 Qh8+ 7. Kxd7 Qxb2 $11) 5... Qd1+ 6. Rd2 $1 (6. Kc7 $2 Qd7+ 7. Kxd7 {stalemate.}) 6... Qxd2+ 7. Kc8 $22 {Domination and zz. White hasn't created any threat but d2 is the only safe square for the queen.} Qd6 (7... Qe3 8. Bd3+ $1 Kb6 9. b8=Q+ Kxc6 10. Be4+ $1 Kc5 (10... Qxe4 11. Qb7+) 11. Qa7+) (7... Qg5 8. Bd3+ Kb6 9. b8=Q+ Kxc6 10. Qc7+ Kd5 11. Qa5+) (7... Qh6 8. Bd3+ Kb6 9. b8=Q+ Kxc6 10. Qb5+ Kd6 11. Qb6+) (7... Qc3 8. Bd3+ Kb6 9. b8=Q+ Kxc6 10. Qc7+) 8. Bd3+ $1 Kb6 (8... Qxd3 9. Nb4+) 9. b8=Q+ Kxc6 { Black saved his Queen but not King.} 10. Qb5# {Mutual annihilations of pieces. Domination with multiple Q-skewers.} 1-0