[Event "Schach"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Rusz, Árpád"] [Black "(Study 154)"] [Result "1-0"] [SetUp "1"] [FEN "5R2/4KPr1/3P4/1kq5/7P/p1pP3p/8/1NR5 w - - 0 1"] [PlyCount "23"] [EventDate "2017.??.??"] {[%evp 0,23,174,177,185,184,184,186,186,183,182,182,208,194,194,212,207,221,226,226,209,204,258,256,1016,29974]} 1. Nxa3+ $1 (1. Nxc3+ $2 Ka6 $11) 1... Qxa3 (1... Ka6 2. Nc4 h2 3. Ra8+ Kb7 4. Ra5 $18) 2. Rb8+ {Both dangerous white pawns are pinned but black unpins the d6 pawn and sets a trap:} Kc5 $1 3. Rxc3+ $1 {fork} ({It was very tempting to push the unpinned pawn:} 3. d7 $2 Qa7 $1 {Both pawns are pinned again.} 4. Rc8+ Kd5 5. Rf1 h2 6. Ke8 Qxd7+ $1 (6... Qe3+ $2 7. Kf8 Rxf7+ $1 8. Rxf7 Qh6+ 9. Kg8 Qg6+ 10. Rg7 Qe6+ 11. Kh7 Qf5+ 12. Kh8 $1 Qxd7 13. Rxd7+ Ke6 14. Re8+ $1 Kxd7 15. Re1 $18) 7. Kxd7 Rxf7+ $1 8. Rxf7 h1=Q $11) 3... Qxc3 4. Rc8+ Kd4 5. Rxc3 Rxf7+ $1 (5... Kxc3 6. Ke8 $18) 6. Ke6 $3 {White is very polite and lets Black to be the first to take the rook.} ({Thematic try:} 6. Kxf7 $2 Kxc3 {mutual zugzwang} 7. d7 h2 {mutual zugzwang} 8. d8=Q h1=Q {mutual zugzwang} 9. d4 Qb7+ 10. Ke6 (10. Qe7 Qd5+ {perpetual check} 11. Qe6 Qb7+ 12. Qe7 Qd5+ {perpetual check}) 10... Qe4+ $11 {The e4-square was no longer controlled.}) 6... Kxc3 7. Kxf7 {mutual zugzwang} h2 8. d7 {mutual zugzwang} h1=Q {Black is also let to be the first to promote the pawn.} 9. d8=Q {mutual zugzwang} Qb7+ {Now we see the reason for white's eccentric play: the black queen has to leave its ideal square.} (9... Qf3+ 10. Qf6+ $18) 10. Ke6 $1 {Contrary to the thematic try, now there is no check on e4.} Qh1 {The black queen returns to h1 but something has changed: the white king is protecting the d5 square!} 11. Qa5+ $1 Kxd3 12. Qd5+ {fork} 1-0