1. Ke3! Kg3 2. Sf2 Kh4? 3. Kf4 Kh5 4. Sg4 Kh4 5. Ba2! Kh5 6. Bf7+ Kh4 7. Sf3+ Kh3 8. Sf2#
2. ... Kh2 3. Bc2? Kxg1 4. Sg4 Kf1 5. Sh2+ Ke1,Kg1 6. Sf3+ Kf1 7. Bd3#
3. ... Kg3! 4. Bf5 Kh2? 5. Sf3+ Kg3 6. Se4#
4. ... Kh4 5. Sf3+ Kg3? 6. Se4#
5. ... Kh5!
3. Bf5? Kg3 4. Sg4 Kh4 transposes to main line

3. ... Kxg1 4. Sg4 Kf1 5. Bd3+ Kg1 6. Bc2 Kf1 etc. to #9

5. ... Ke1!
3. Sg4+! Kxg1? 4. Bc2! Kf1 etc. to #7
3. ... Kg3 4. Sf6? Kh2 5. Bc2 Kxg1 6. Sg4 Kf1 etc. to #9
4. ... Kh4! 5. Kf4? stalemate!
4. Bf5 Kh4 5. Kf4 Kh5 6. Bh7! Kh4 7. Sf3+ Kh3? 8. Sf2#
7. ... Kh5 8. Kf5 (9. Bg6#)

1. Sf2? Kg3 2. Ke3 transposes to main line

1. ... Kxg1! 2. Sg4? stalemate!

Keywords: miniature, no white pawns, changed continuations, square vacation, switchback, sacrifice of white piece (passive), annihilation, selfblock, line opening (d3-f1), line closing (g1-g6), stalemate avoidance