| White to move |
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| Mate in 7 with Kb2, Kc2, Kd1, Kd2, Ra3, Ra7, Rb3, Rb7, Rc7, Rd1, Rd2, Rd5, Rd6+, Rd8, Rdd7, Rdh3, Re3, Rf3+, Rg3, Rh1, Rh2, Rh5, Rh6+, Rh8, Rhd7 and Rhh3. Worse are Kb1, Rc3, Rd4 and Rh4 with mate in 8, Rg7 with mate in 13, and Re7 and Rf7+ with mate in 14. |
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| 1. Rb3 |
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| White mates in 6 after Kg6. Worse are Ke5, Ke6, Kf5 and Kg5 when White mates in 5. |
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| 1... Kg6 |
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| Mate in 6 with Ra7, Rbb7 and Rh8. Worse are Rbh3, Rc7, Rd7, Re7, Rh1, Rh2, Rh4, Rhb7 and Rhh3 with mate in 7, Kd2 and Rg3+ with mate in 8, Kc2, Kd1, Ra3, Rb2, Rb4, Rb5, Rc3, Rd3, Re3 and Rf3 with mate in 10, Kb1, Kb2, Rh5 and Rh6+ with mate in 11, Rb1, Rb6+, Rb8 and Rg7+ with mate in 13, and Rf7 with mate in 15. |
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| 2. Ra7 |
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| White mates in 5 after Kf5, Kf6 and Kg5. Worse are Kh5 when White mates in 3, and Kh6 when White mates in 2. |
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| 2... Kf5 |
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| Mate in 5 with Rb5+. Worse are Kc2, Kd2, Ra5+, Ra6, Rb6 and Re3 with mate in 6, Kb1, Kb2, Kd1, Ra1, Ra2, Ra4, Ra8, Raa3, Rab7, Rb1, Rb2, Rb4, Rb8, Rba3, Rbb7, Rc3, Rc7, Rd3, Re7, Rf3+, Rf7+, Rg3, Rg7, Rh3 and Rh7 with mate in 7, and Rd7 with mate in 8. |
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| 3. Rb5+ |
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| White mates in 4 after Ke4, Ke6, Kf4 and Kg4. Worse are Kf6 and Kg6 when White mates in 3. |
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| 3... Ke6 |
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| Mate in 4 with Ra6+. Worse are Rh5 and Rh7 with mate in 5, Kb1, Kb2, Kc2, Kd1, Kd2, Ra1, Ra2, Ra3, Ra4, Ra8, Raa5, Rab7, Rb6+, Rba5, Rc5, Rg5 and Rg7 with mate in 6, Rb1, Rb2, Rb3, Rb4, Rb8, Rbb7 and Rc7 with mate in 7, Re7+ and Rf7 with mate in 14, and Rd5, Rd7, Re5+ and Rf5 with mate in 15. |
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| 4. Ra6+ |
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| White mates in 3 after Kd7. Worse are Ke7 and Kf7 when White mates in 2. |
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| 4... Kd7 |
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| Mate in 3 with Rb7+. Worse are Rc5, Re5, Rg5, Rg6, Rh5 and Rh6 with mate in 4, Kb1, Kb2, Kc2, Kd1, Kd2, Rab6, Rb1, Rb2, Rb3, Rb4, Rb8, Rba5, Rbb6, Rd5+, Rf5 and Rf6 with mate in 5, Ra2, Ra3, Ra4, Ra7+, Ra8 and Raa5 with mate in 6, Ra1 with mate in 7, Re6 with mate in 14, and Rc6 and Rd6+ with mate in 15. |
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| 5. Rb7+ |
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| White mates in 2 after Kc8. Worse are Kd8 and Ke8 when White mates in 1. |
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| 5... Kc8 |
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| Mate in 2 with Raa7. Worse are Rab6, Rba7, Re7, Rf7, Rg7 and Rh7 with mate in 3, Rb1, Rb2, Rb3, Rb4, Rb5 and Rbb6 with mate in 5, Ra2, Ra3, Ra4 and Rc6+ with mate in 11, Rb8+ with mate in 12, Kb2, Kc2, Kd2, Ra1, Ra5, Rd6, Rd7, Rg6 and Rh6 with mate in 13, and Kb1, Kd1, Ra8+, Rc7+, Re6 and Rf6 with mate in 14. |
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| 6. Raa7 |
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| White mates in 1 after Kd8. |
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| 6... Kd8 |
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| Mate in 1 with Ra8# and Rb8#. Worse are Rc7, Re7, Rg7 and Rh7 with mate in 2, and Kb1, Kb2, Kc2, Kd1, Kd2, Ra1, Ra2, Ra3, Ra4, Ra5, Ra6, Rb1, Rb2, Rb3, Rb4, Rb5, Rb6, Rd7+ and Rf7 with mate in 3. |
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| 7. Ra8# |
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| Checkmate. |
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| 1-0 |