1. .. Qa1+ 2. Kg2 Qxa3? Black hopes still to have time to grab a pawn. 3. Rc2 Qb4 (wants now also the pawn on e4) 4. Qf5 {defense and attack} Rf8 5. Rc7 Qa4 ('protecting' d7; better was 5. ... Qb5 6.Rxf7 Rxf7 7.Qxf7+ Kd8 8.Qf6+ Kc7 9.Qe7+ Kb8 (9. ... Qd7 10.Rc2+ Kb8 11.Qxd7) 10.Qxd6+ Ka7 11.Qxe5 with big advantage for White)(5. ... Rd8? 6.Rxf7 Rxf7 7.Qxf7#) 6. Rxf7 Rxf7 7. Qxf7+ Kd8 8. Qf6+ Kc8 (not better is 8. ... Ke8 9.Qe6+ Kd8 10.Qxd6+ Qd7 11.Rf8#) 9. Qe6+ Kc7 10. Qe7+ Kb6 (10. ... Kb8 11.Qxd6+ Ka7 12.Qc5+ b6 13.Qc7# loses too (or 12. ... Kb8 13.Rf8+ Qe8 14.Rxe8# with one move more resistance)) 11. Rb2+ Kc5 (11. ... Qb5 12.Qxd6+ Ka7 13.Rxb5 axb5 and White will also win soon) 12. Qc7+ Kd4 13. Rd2+ Kxe4 14. Qh7+ Ke3 15. Qd3# (or 13. ... Ke3 14.Qc3+ Kxe4 15.Qd3#)