[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "White to play and win "] [Black "?"] [Result "*"] [Annotator "peter"] [SetUp "1"] [FEN "B3K3/8/8/P1p5/8/8/2b4k/8 w - - 0 1"] [PlyCount "23"] [EventDate "1959.05.19"] [EventType "tourn"] [EventRounds "15"] [SourceVersionDate "2020.04.01"] {[#]} 1. a6 c4 2. a7 c3 3. Bh1 (3. Bd5 Bg6+ 4. Ke7 c2 5. a8=Q c1=Q $11) 3... Ba4+ (3... Bg6+ 4. Ke7 c2 5. a8=Q c1=Q 6. Qg2# {revealing the point behind Bh1 as opposed to another bishop move}) 4. Kf7 $1 (4. Ke7 Bc6 5. Bxc6 c2 6. a8=Q c1=Q $11 {and as usual in Q+B vs Q this is drawn}) 4... Bc6 {black forces the white bishop from h1} 5. Bxc6 c2 6. a8=Q c1=Q {this is an exception and in this case Q+B vs Q is won, the position of the white king making a critical difference in exploiting the exposed black king and poorly placed queen.} 7. Qa2+ Kg3 8. Qg2+ Kf4 (8... Kh4 9. Qf2+ Kh5 (9... Kg5 10. Qg3+ {transposes to the mainline}) 10. Bf3+ Kg5 11. Qg3+ Kf5 12. Qg4+ Ke5 13. Qe4+ Kd6 14. Qe7#) 9. Qf3+ Kg5 (9... Ke5 10. Qf6#) 10. Qg3+ Kf5 11. Qg6+ {revealing why the white king had to go to f7 rather than e7} Kf4 (11... Ke5 12. Qf6#) 12. Qh6+ { winning the black queen} *