[Event "Korányi MT"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Rusz, Árpád"] [Black "(Study 165)"] [Result "1-0"] [Annotator "1st/2nd Prize"] [SetUp "1"] [FEN "B7/K2bp3/2pb3p/7k/Q1p5/2p5/7p/4N3 w - - 0 1"] [PlyCount "9"] 1. Bxc6 $1 ({1st thematic try:} 1. Qd1+ $2 Bg4 2. Nf3 Bc5+ $1 (2... c2 $2 3. Bxc6 $3 {Queen sacrifice} cxd1=Q 4. Be8#) 3. Kb8 (3. Kb7 c2 $1 $19) 3... Bd6+ 4. Ka7 Bc5+ {Perpetual check. The king cannot escape from the checks because the corner square is blocked.}) 1... Bc5+ $1 (1... Bxc6 2. Qxc6 $18) 2. Ka8 $3 {The corner square was unblocked in the first move so the white king finds a nice hiding place there.} ({2nd thematic try:} 2. Kb7 $2 h1=Q 3. Qd1+ Bg4 4. Nf3 $2 Bc8+ $1 {Bishop sacrifice. Black is unblocking the g4 square before taking the queen!} 5. Kxc8 Qxd1 6. Be8+ Kg4 $1 $19) (2. Kb8 $2 h1=Q 3. Qd1+ Bg4 4. Nf3 $2 Qh2+ $1 $19) 2... h1=Q $1 {Cross-pin} 3. Qd1+ (3. Bxh1 $2 Bxa4 $19) 3... Bg4 $1 4. Nf3 $3 {Cross theme & Queen sacrifice} Qxd1 (4... Bxf3 5. Bxf3+ $18) 5. Be8# 1-0