Black to move. How should black proceed?
Source: ChessToday.net
Daily Chess Improvement: Winning Chess Tactic!
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Black to move. How should black proceed?
Source: ChessToday.net
1. …..Nb3+!. 2. axb3. a4! Threat 3…. axb3 mating.
A- 3. b4. a2!
A1-4. b3. Qb2#
A2.-4. bxa3. Rxa3#
A3- 4. Any other move inter posing on a file Qxb2#
A4.- 4. Any other move.. axb2#
B- 3. bxa4. Rxa4#
C- 3.Ba5. Rxa5. 4. Qxa5. Qxd1#
D- 3. Ba6. Rxa6. 4. Ba5. a3! And white cannot prevent mate. Need to work out.
What about 3.Bd3, I couldn’t see what to do after that. Couldn’t get 1.a4 or 1.Nc3 to work either.
James,
That might be the best defense:
1. ……….Nb3
2. ab3 a4
3. Bd3 ab3 (anything better?)
Now white has to choose which piece to interpose at a5- lets try both:
4. Ba5 Qd1!
5. Qd1 Ra5
6. Kb1 Rfa8 (threatening mate on the back rank)
7. Qb3 Nd2 forks the king and queen for a decisive edge.
It will do white no good to interpose the bishop at a6 at move 7- black takes with the rook on a5 keeping the back rank safe again forcing Qb3. So, at move 4 white can put the queen a5:
4. Qa5 Ra5
5. Ba5
This is definitely better than 4.Ba5. Not sure what to do with the black queen. The most aggressive move would be Qc6 threatening Qa4+. I really don’t like Qxg2. So lets look at Qc6:
5. ………..Qc6
6. Nf8
I can’t imagine there is anything better here, but I might be missing something. Continuing:
6. ………..Qa4
7. Kb1 Kf8 (anything better?)
Here, white can’t exchange at e4 without losing the bishop at a5, too. That Q vs 2R ending would likely be a win for black given the precarious nature of white’s king and that pawn on b2, not to mention to black pawn on b3 and the passed e-pawn, but not an easy win for black. I would have to think a while at this point to decide what is best for white for move 8.
Well it looks like the best tactic available so we sort of solved it I think.
1. ……….Nb3
2. ab3 a4
3. Bd3 ab3 (anything better?)
Now white has to choose which piece to interpose at a5- lets try both:
4. Ba5
Why not 4…Nc3
I think white would then likely win after 5.Qxc3. I feel like black must then exchange the queens. It looks to me that white would end up a piece for two pawns at worst- remember, black must expend a move in taking the knight on e6 in addition to the move taking the bishop at a5.