In the initial diagram position, Black is already so much material ahead that either 1...Bxa1
or 1...Bxe5
keeps an overwhelming advantage. But 1...Bxa1
is the most straightforward, and in any case White need not allow 2...Bd3+
after 1...Bxe5 2.Nxe5
. Black can first kick the knight with 1...b5
before following with 2...Bxe5
to get the ...Bd3+
idea in; that also keeps a huge plus for Black, but still the simple 1...Bxa1
is cleanest.
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[FEN "3r1rk1/pp2npp1/4pn2/4Nb1p/2Nb1P2/1P4PP/P3K1B1/R4R2 b - - 0 1"]
1...Bxa1
( 1...Bxe5 $6 {Black starts out ahead so much material that this is
perfectly fine, but it is not best, and sloppy if nothing else.} 2.
Nxe5 {Covering d3, so Black cannot pick up the additional exchange via
...Bd3+.}
( 2.fxe5 Bd3+ 3.Ke1 Nd7 {Black is winning handily, but won't be up
a whole rook and pawn immediately as in the main line.} 4.Bxb7
Bxc4 5.bxc4 Nxe5 )
)
( 1...b5 {An attempt to improve on the 1...Bxe5 line, but to no avail,
and still not as good as just snapping off the rook immediately.} 2.
Ne3 Bxe5 {Black's first move has deprived White of the knight
recapture, but we end up in much the same position as after 1...Bxe5
2.fxe5 Bd3+ 3.Ke1 anyway.} 3.fxe5 Bd3+ 4.Ke1 Nd7 5.Rf2 Nxe5 )
2.Rxa1
{Black is simply up a rook and pawn with an easily winning position.}
*