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its not so obvious, more obvious for white; i guess g4 and swapping queens or centralizing the queens would be better than trading the axb pawn which would give time for white to cause trouble in the middle of the board.
jb. have the world champions arrived to mexico city yet? its 3 days and 2 days for the party to start going.
y
Easy win for black.
Next !.
1… g4 2. Qxg4 Qf5 should win nicely. Whether or not white exchanges queens or tries to get free of the pin, black creates an unstoppable passed pawn with c4 while the king is sufficient to slow down white’s kingside pawns
for example:
1… g4
2. Qxg4 Qf5
3. h5 c4
4. h6 Qxg4
5. Kxg4 Kf6
and
6. bxa4 c3
7. a5 c2
8. a6 c1=Q
or
6. bxc4 b3
7. c5 b2
8. c6 b1=Q
the queen sopping the pawn
and white moving the king or the pawns on the kingside does not achieve anything.
The only alternative to consider would be
3. Qxf5 Kxf5
4. Kg2 , but C4 and the while king can still not stop the pawns. When the white kingside pawns move the black king can move too.
Looking at it again, there is one small side-issue, though. after
1. … g4
2. Qxg4 Qf5
3. bxa4
there must follow
3. … c4
4. a5 b3
and white must use a tempo to prevent bxa2 and queening on the a-file, which allows the queen to snatch up the pawn at a7.
I seem not to be able to stop commenting on this one.
1. … g4
2. Qxg4 Qf5
3. bxa4 c4
4. a5 b3
of course
5. axb3 cxb3
6. a6 b2
7. a7 b1=Q wins because
8. a8=Q Qh1#
8. Qxf5 Kxf5 9. a8=Q Qh1#
8. Qxf5 Kxf5 9. g4+ Kf4 10. a8=Q Qh1#
and 8.anything else and eg 8. … Qa1
And what about:
1. … g4+
2. Qg4 Qf5
3. Qf5 Kf5
4. g4+ Kf4 (now there is Qh1#)
5. h5 Kg5 (else white will promote)
6. ba4
what can black do against this?
Black has a zwischenzug too=). Then it is:
1. … g4+
2. Qxg4 Qxf5
3. Qxf5 Kxf5
4. g4+ Kf4 (now there is Qh1#)
5. h5 axb3
(6. h6 bxa2 7. h7 a1=Q)
6. axb3 Kg5
and the black king cannot stop a coronation on the b-file after c4 by black.
sorry, the white king cannot stop the coronation