White to Move© (The Turk's Tactics Thread)

Originally posted by heinzkat
One sideline is this:
1. Ke3 Re7+
2. Kxd3 Nf4+
3. Kd2 Re2+
4. Bxe2 with
5. Na3 mate

The main line is this:
1. Ke3 Re7+
2. Kxd3 Nb4+
3. Kd2 Ra7 [defending against Na3, but now the first idea works since Ra4xc4 is not possible]
4. Nba5 Rxa5
5. Ba4 Rxa4
6. Kd1 with
7. Nd2 mate

Originally posted by heinzkat
That's what you get for being hasty; missed a few variations:

1. Ke3 Re7+
2. Kxd3 Nb4+ [other possibilities are 2. ... Nce5+/Nge5+ 3. Kc3, or 2. ... Re3+ 3. Kxe3, all with mate next move via either Na3 or Bc2]
3. Kd2 Re2+
4. Bxe2 Nc2
5. Bd1/Bd3 with mate next move

Probably still not the full solution though

This was composed by Hans Peter Rehm (1964) - Lepushutz theme.

White to move

1.Rh1!

a) Kxh3 2.Kf2 and the king must leave the knight unprotected

b) Kxh1 2.Kf2 and the knight gets lost, and the king can't get to the pawn in time

c) best try is Nf3 2.h4
c1) Kg3 3.h5 and the knight will have to sacrify for the pawn
c2) Nd4+ 3.Ke3 and if Nc2+ then 4.Ke4 and the knight is cut off from the pawn

Originally posted by Mephisto2
1.Rh1!

a) Kxh3 2.Kf2 and the king must leave the knight unprotected

b) Kxh1 2.Kf2 and the knight gets lost, and the king can't get to the pawn in time

c) best try is Nf3 2.h4
c1) Kg3 3.h5 and the knight will have to be sacrificed for the pawn
c2) Nd4+ 3.Ke3 and if Nc2+ then 4.Ke4 and the knight is cut off from the pawn

White to move

Originally posted by heinzkat
[fen]8/5p2/5p2/6kP/7n/6K1/8/3R4[/fen]

White to move

Originally posted by heinzkat
[fen]8/5p2/5p2/6kP/7n/6K1/8/3R4[/fen]

White to move

1...Nf5+ 2.Rxf5+! Kxf5 3.Kh4 and the pawn promotes.
1...f5 2.Rf4 Ng2!? 3.Kxg2! and White either promotes or keeps the Rook

Originally posted by heinzkat
Hint (about time for a hint): winning simplification.

Originally posted by Mephisto2
1.Rf1 and now

a) Kxh5 2.Rh1
b) f5 2.Rf4
c) Nf5+ 2.Rxf5 Kxf5 3.Kh4

Correct!

Originally posted by SwissGambit
1.Rd5+

1...Nf5+ 2.Rxf5+! Kxf5 3.Kh4 and the pawn promotes.
1...f5 just leaves the N trapped. White will mark time until the pawn tempos run out.

Edit: hmm, I still don't have the right answer for the 1...f5 line.

Originally posted by heinzkat
Incorrect!

Since MY correct answer is OBVIOUSLY in a post above Mephisto's 😉 I'll supply the next problem.

Originally posted by SwissGambit
Since MY [b]correct answer is OBVIOUSLY in a post above Mephisto's 😉 I'll supply the next problem.

[fen]8/4p3/2p5/2p1p2K/3n3p/pP2N1pr/rb1N2p1/k1n3Rb w - - 0 1[/fen][/b]

Originally posted by heinzkat
What's the stipulation?