Second puzzle in the last few days that we don’t know who is to move. In any case, I will just assume that Naiditsch was moving at this point since the tourney table tells me he won the game against Sokolov.
A bishop sacrifice at g6 seems to fairly obvious to me since it is a way to discover a check on the rook at d5:
1. Bg6 Rd1
This or just concede the loss of the exchange and pawn. Continuing:
2. Rd1
After 2.Qd1, I don’t think white has enough compensation for the sacrifice: [2.Qd1? hg6 3.Qg4 Qd4 4.Nf7 Kg8! 5.Qg6 Qf4 6.Nd6 Rf8 and though the black king is in a tight spot, I don’t see a strong continuation at this point in the line since black has good counterplay on the f-file now. Continuing from 2.Rd1 above:
2. …..hg6 (alternatives later) 3. Rd6
The main point of the initial sacrifice. Continuing:
3. …..Qc7
I would probably argue that 3. …Qd6 4.Nf7+ is a superior defense for black, but it is still lost. Continuing:
4. Rg6!
Removing the pawn and threatening Qh5+ or even Ne6 forking the queen and bishop. The only plausible defense I see is
4. …..Ra6 5. Ra6! Qc1
No better is ab6: [5. …ab6 6.Qh5 Kg8 (or 6. …Bh6 7.Qe8 Kg7 9.Ne6+-) 7.Qh7 Kf8 8.Ne6+-]. Continuing:
nxh7
Second puzzle in the last few days that we don’t know who is to move. In any case, I will just assume that Naiditsch was moving at this point since the tourney table tells me he won the game against Sokolov.
A bishop sacrifice at g6 seems to fairly obvious to me since it is a way to discover a check on the rook at d5:
1. Bg6 Rd1
This or just concede the loss of the exchange and pawn. Continuing:
2. Rd1
After 2.Qd1, I don’t think white has enough compensation for the sacrifice: [2.Qd1? hg6 3.Qg4 Qd4 4.Nf7 Kg8! 5.Qg6 Qf4 6.Nd6 Rf8 and though the black king is in a tight spot, I don’t see a strong continuation at this point in the line since black has good counterplay on the f-file now. Continuing from 2.Rd1 above:
2. …..hg6 (alternatives later)
3. Rd6
The main point of the initial sacrifice. Continuing:
3. …..Qc7
I would probably argue that 3. …Qd6 4.Nf7+ is a superior defense for black, but it is still lost. Continuing:
4. Rg6!
Removing the pawn and threatening Qh5+ or even Ne6 forking the queen and bishop. The only plausible defense I see is
4. …..Ra6
5. Ra6! Qc1
No better is ab6: [5. …ab6 6.Qh5 Kg8 (or 6. …Bh6 7.Qe8 Kg7 9.Ne6+-) 7.Qh7 Kf8 8.Ne6+-]. Continuing:
6. Kh2 Qg5
Or [6. …ab6 7.Qh5 Kg8 8.Qe8 Bf8 9.Qf7 Kh8 10.Qh7#]. Continuing:
7. Ra8 Kh7
8. Ra5 should win.
la jugada es d4c mate filidor