| 1.Qa1+ | Kh7 |
| 2.Qb1+ | Kh8 |
| 3.Qb2+ | Kh7 |
| 4.Qc2+ | Kh8 |
| 5.Qc3+ | Kh7 |
| 6.Qd3+ | Kh8 |
| 7.Qh3+! | |
| Forcing the bishop to leave the back rank, since 7... Qh7 loses to 8.Qc3+ | |
| 7... | Bh7 |
| 8.Qc3+ | Kg8 |
| 9.Qc8! | |
| Threat 10.Bc5+, and if 9... Qf7 10.Bh6+ mates | |
| 9... | Kf7 |
| Occupying the last square available to the queen | |
| 10.Bc5! | |
| And the Black queen is trapped | |
| Kubbel (1935) | |