[Event "EG"] [Site "?"] [Date "1979.??.??"] [Round "?"] [White "Nunn, J."] [Black "(Study 10a)"] [Result "1-0"] [SetUp "1"] [FEN "4KB1k/1nN2R2/8/8/8/1pn5/p7/8 w - - 0 1"] [PlyCount "15"] [EventDate "1979.??.??"] [SourceDate "2004.06.13"] 1. Nd5 $1 (1. Bg7+ $2 Kg8 2. Bxc3 Nd6+ $11) 1... Nxd5 (1... a1=Q 2. Bg7+ Kh7 3. Bxc3+ $18) 2. Bg7+ Kg8 3. Rxb7 Nc7+ $1 4. Rxc7 a1=Q (4... b2 5. Bxb2 a1=Q 6. Rg7+ (6. Bxa1 $2 {stalemate}) 6... Kh8 7. Rg2+ (7. Bxa1 $2 {stalemate}) 7... Kh7 8. Bxa1 $18) 5. Bxa1 b2 6. Ra7 $1 {mutual zugzwang} (6. Bxb2 $2 {stalemate} ) 6... b1=Q 7. Rg7+ Kh8 8. Rg1+ 1-0