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Going down the forcing line…
1. Qc3+ Kg8
2. Qg3+ Kh8
3. Qb8+ Qg8
4. Qh2+ Qh7
5. Qb2+ Kg8
6. Qg2+ Kh8
7. Qa8+ Qg8
8. Qh1+ Qh7
9. Qa1+ c3 … **
10. Qxc3+ Kg8
11. Qc8+ Nd8
12. Qxd8+ Kf7
13. Ng5+
** or 9….Kg8
10. Qa8+ Nd8 with same result
The idea is right but after 2.Qg1, black saves with 2.. Ng5. Winning with Q+N vs Q is impossible unless there is a forced line to win the queen. However, after 3.Qg5 Kf7 white does not have such a forced line.
After ..Ng5, white should be able to check on the 8th rank, after which ..Kf7 Nxg5+ is trivially won.
Therefore:
1.Qc3 Kg8 (1.. Ne5 2.Qe5 Kg8 3.Qe8)
2.Qg3 Kh8 (now 2.. Ng5 3.Qb8 Kf7 4.Ng5)
3.Qb8 Qg8
4.Qh2 Qh7
5.Qb2 Kg8 (5.. c3 6.Qc3 Kg8 7.Qc8 Nd8 8.Qd8 Kf7 9.Ng5)
6.Qg2 Kh8 (6.. Ng5 7.Qa8 etc)
7.Qa8 Qg8
8.Qh1 Qh7
9.Qa1 Kg8
10.Qa8 Nd8
11.Qd8 Kf7
12.Ng5 1-0
very interesting study
Too difficult. Here’s some breakfast: WK-organisatie haalt Nils Nijs uit zijn bed… : http://schaakfabriek.be/2007/11/28/wk-organisatie-haalt-nils-nijs-uit-zijn-bed/
wei ji is right and Carlson will be next World Champ
1.qc3+ kg8
2.qg3+ kh8
3.qb8+ qg8
4.qh2+ qh7
5.qb2+ kg8
6.qg2+ kh8
7.qa8+ qg8
8.qh1+ qh7
9.qa1+ kg8
10.qa8+ nd8
11.qxd8+ kf7
12.qd7+ kg8
13.qe8#
if 12…kg6 13.nf8+
qc3+, th qg3+ tnen qb8+ then Nf8 and then Ng6 ch and wins.
Nf8? Qf8 is possible also…