[Event "?"] [Site "?"] [Date "2025.??.??"] [Round "?"] [White "Rusz, Arpad"] [Black "Study198"] [Result "1/2-1/2"] [Annotator "version"] [SetUp "1"] [FEN "8/1k6/1p6/p2p3p/PP6/2P4p/K6P/8 w - - 0 1"] [PlyCount "35"] [GameId "2227152130851145"] {[%csl Gb1,Gb2,Gc1,Gc2,Rc6,Rc7,Rd6,Rd7]} {A study composed after the game Shankland vs Firouzja (FIDE Grand Swiss 2025). The play is governed by the theory of corresponding squares. White has to fight against three black attack plans: 1) Penetration of the king through e5 2) The sacrifice d5-d4! followed by Kd5 and Kxd4 3) The sacrifice b6-b5! followed by bxa5 bxa4.} 1. Ka1 $3 (1. Kb3 $2 Kc7 $1 2. Kb2 Kc6 3. Kb3 Kd7 $1 4. Kb2 Ke6 5. Kc2 Kd6 $1 6. Kd3 b5 $1 $19) 1... Kc7 2. Kb1 $1 Kc6 3. Kb2 $1 Kd7 4. Kc1 $1 Kd6 5. Kc2 $1 Ke5 6. Kd3 Kf4 {Now we have reached a position from the game.} 7. Ke2 $1 (7. Kd4 $2 Kf3 8. Kd3 Kg2 9. Ke2 Kxh2 10. Kf2 Kh1 $1 (10... h4 $2 11. b5 $11) 11. bxa5 (11. b5 Kh2 $19) 11... bxa5 12. Kg3 Kg1 $19) ({The continuation from the game:} 7. bxa5 $2 bxa5 8. Kd4 Kf3 9. Kd3 Kg2 $19) 7... Ke4 8. b5 $1 d4 (8... Kf4 9. Kf2 h4 10. Ke2 Ke4 11. Kd2 Kf3 12. Kd3 Kg2 13. Ke3 Kxh2 14. Kf2 $11) 9. cxd4 Kxd4 10. Kf3 Kc4 11. Ke4 $1 Kb4 12. Kd5 Kxa4 13. Kc6 Kb4 14. Kxb6 a4 15. Kc6 a3 16. b6 a2 17. b7 a1=Q 18. b8=Q+ 1/2-1/2