[Event "Moscow Ty"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Rusz, Árpád"] [Black "(Study 158)"] [Result "1-0"] [Annotator "1st Prize"] [SetUp "1"] [FEN "8/8/6P1/6P1/8/2p5/r1P3k1/2KR4 w - - 0 1"] [PlyCount "21"] {[%evp 0,21,200,194,199,182,298,298,195,127,121,549,733,961,634,992,992,992,1002,1012,1012,1032,1032,29958]} 1. Kb1 (1. g7 $4 Ra1#) 1... Rb2+ 2. Ka1 $1 {The king moves to the first corner square.} Rxc2 3. g7 Rd2 4. Rh1 $3 {This surprising sacrifice to the second corner is the only way to win. Besides attracting the black king to a worse square, the white rook has the idea of getting to the other side of the yet unborn queen!} ({Thematic try:} 4. Rf1 $2 {This move also attracts the black king to a worse square, but as we will see, it has the negative effect of blocking the eight rank few moves later.} Rd8 (4... Kxf1 $2 5. g8=Q Rd1+ 6. Ka2 c2 7. Qc4+ $18) 5. Rf8 Rd1+ 6. Ka2 c2 7. g8=Q $4 (7. Rc8 $11) 7... c1=Q $19 {In a QR/QR endgame, the winner is usually one who gives the first check but now 8. Qa8+ is impossible.}) (4. g8=Q $2 Rxd1+ 5. Ka2 c2 $11) (4. Rxd2+ $2 cxd2 5. g8=Q d1=Q+ $11) (4. Rc1 $2 Rd8 $11) 4... Rd8 (4... Kxh1 5. g8=Q Rd1+ 6. Ka2 c2 7. Qh7+ $18) 5. Rh8 $1 {This is the third move to a corner square!} Rd1+ 6. Ka2 c2 7. g8=Q c1=Q {If we compare with the thematic try, here the white rook doesn't block the path to the fourth corner (Loyd Clearance with a peri-anticritical manoeuvre).} (7... Ra1+ 8. Kb3 $1 (8. Kxa1 $2 c1=Q+ $11) 8... c1=Q 9. Qd5+ $18) 8. Qa8+ $1 {White completes the task of visiting all corners of the board.} Kg3 9. Qb8+ Kg4 10. Qb4+ Qf4 11. Rh4+ $1 {The game ends with another rook sacrifice.} 1-0