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20 comments:
Rd7 ;-)
I think it´s Rd7 threatening mate and the only move for black is Kxd7 when follows I guess:
Qxb7 Ke6 ( Kd8 Rd1+! wins) Qd5+ Ke7 Bc5 with mate in few moves
1.Rd7 Kd7 2.Qb7+ ...
A) 2... Ke6 3.Qd5+ Ke7 4.Qd6++
B) 2... Kd8 3.Rd1+ Bd6 4. Rd6++
With black being way ahead in material and threatening to mate white soon (after Rxh2) white needs to act fast, however, he is capable of doing so via 1.Rd7! Kxd7 2.Qxb7+ and black is toast.
Easy to see from this position, yet I wonder how far in advance the white player realized this would be a winning position, giving the material he obviously sacrificed. Nice.
Beelze
This is cool!
Black to move: 1. -, Rxh2!
White to move: 1. Rd7!
The white line asked for is
1. Rd7 with the threats of 1. Qxb7# and 2. Qc7# forcing 1. -, Kxd7 2. Qxb7+ and now
2. -, Kd8 3. Rd1+, Bd6 4. Rxd6# or
2. -, Ke6 3. Qd5+ (oh, it took me too long to see this...), Ke7 4. Qd6#
The black line not asked for is even simpler.
1. -, Rxh2 (followed by some senseless revenge checks by giving material) 2. Kxh2, Qh3+ 3. Kg1, Qh1#.
Thanks for posting this one.
Jochen
By mating Black into oblivion with 1.Rd7! (threatening Qxb7# or Qc7#)Kxd7 2.Qxb7+ Ke6 (2...Kd8 3.Rd1+ and mate next) 3.Qc6+ Ke7 (3...Bd6 4.Qxd6#) 4.Bxc5+ Kd8 5.Rd1+ Bd6 6.Rxd6+ Ke7 7.Rd7#.
Rd7 seems to be the only option to me.
Black is threatening mate with Qh3 so white has to be faster!
Considering that black has mate in two or three, white needs something that is decisively forced. I really see only one first move:
1. Rd7 Kd7 (forced)
2. Qb7 Ke6 (Kd8 3. Rd1)
3. Qd5 Kd7
4. Bc5#
1. Rd7!! Kxd7
2. Qxb7+ Ke6
3. Qd5#
Rd7
1.Rd7! Only move or else black mates.
1...Kxd7 2. Qxb7 Ke6 3. Qc6 Ke7
4.Qd6#
td7
1. Rd7 Kd7 2. Qb7+ ...
A) ... Ke6 3.Qd5+ Ke7 4. Qd6++
B) ... Kd8 3. Rd1+ Bd6 4. Rd6++
1. Rd7!!
I like this one.
All i can see is a brave rook going proudly to d7...
Rd7 Kxd7
Qxb7+ Ke6
Qd5+ Ke7
Qd6+ mate
Great Puzzle.
1. Rd7!! indeed wins it for white, but I think it is not a sure-shot mate-in-4 or whatever. Say:
1. Rd7 Kxd7
2. Qxb7+ Kd8 (2... Ke6 3. Qd5+ Ke7 4. Qd6#)
3. Rd1+
Now what? A lot of people here suggests 3... Bd6 4. Rxd6#. But I see one other option:
3... Qd4
4. Bxd4 Re6 (4. Rxd4 cxd4 5. Bxd4 and there is no more mate threat). (4... cxd4 5. Rxd4 Bd6 6. Rxd6# only postpones it by a move).
5. Bxc5+ Bd6
There is probably a checkmate for white down the line, but this seems to me is black's best continuation.
This was a judit polgar game, i remember.
Rd7
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