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Problem 549: Evgeni Bourd - Threemover |

(07.03.2015) Fleck theme in three-move form with nice triple avoidance and change of mates! Happy to see such interesting themes.
**549. Evgeni Bourd (Israel)****#3 (13+10)**
1.Qf7! (2.Sc7+ Kxd4 3.Qd5#, 2.Sg5+ Kxd4 3.Sf3#, 2.Sxf4+ Kxd4 3.Qd5#) 1...Rxd4 2.Sg5+ Kxe5 3.Sf3#
1...Bxd4 2.Sc7+ Kxe5 3.Qe7#
1...Sxd4 2.Sxf4+ Kxe5 3.Sd3#
(1...dxe6 2.Qb7+ Kxd4 3.Qe4#)
Different kind of Fleck in 3-mover. Black separates the W2 moves while the rest of the play changes.
(Author)There are many four-fold examples also. But, this is a nice one with mates different from the threats!
(Seetharaman) |

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## Comments

matplus.net/.../

The wRg3 has just a small part to play: guarding c3 so tha 1...B~ does not defend.

Karlsterm, Autor, Mikhail Kastilev, SG-2010.

2B4Q2p2pN1KP2pr2NppppR24k31PR52P1b1P12q3B

1. Qh3! [2. Re3+

2. ... Kd4 3. Sc6#

2. ... Qxe3 3. Qxe3#

2. Qf3+

2. ... Bxf3 3. gxf3#

2. Qd3+

2. ... Bxd3 3. cxd3#]

1. ... Rxf5 2. Re3+

2. ... Kd4 3. Sc6#

2. ... Kf4 3. Qg3#

2. ... Qxe3 3. Qxe3#

1. ... b4+ 2. Qd3+

2. ... Bxd3+ 3. cxd3#

1. ... c4 2. Qf3+

2. ... Bxf3 3. gxf3

matplus.net/.../

Evgeni Bourd is the judge of the tourney! Our wishes for the success of the tourney !

Let us await the opinion of the other experts also and for a better name!

You can stop 1....,Rxc5 and the side variations as follows:

3R4/p1K2b2/1pQ4p/3PS37PPpkPBp1/1prP4/2p5/b1s3S1 (11+12)

1.Qf6! (2.Se-f3+/Sxg4+/Sc7, Kxd3 3.Qd4/Sf2/Qd4#)

1....,Sxd3 2.Se-f3+, Kxe4 3.Sd2#

Rxd3 2.Sxg4+, Kxe4 3.Sf2#

cxd3+ 2.Sc6+, Kxe4 3.Qe5#

Kc4 3.Qd4#

A pity the loss of the Karlstrom defence 1...., dxe6.

There is a more economic version but the unprovided 1...., Rxd3 in set play leads quickly to the solution :

3R4/2K2b2/2Q4p/1p1PS3/sPpkPBp1/1prP4/2p5/b1s3S1 (10+12)

unchanged solution.

3R4/p1K2b2/1pQ4p/3PS3/PPpKPBp1/1prP4/2p5/b1s3S1 (11+12)

There is also a mistake in the solution: I wrote Sc7 instead of Sc6 in the threat.

Problem in the next comment as this is too long :(

Solution: 1. Qf6! [2. Sc6+ Kxd3 3. Qd4#

2. Sg4+ Kxd3 3. Sf2#

2. Sef3+ Kxd3 3. Qd4#]

1. ... cxd3 2. Sc6+

2. ... Kc4 3. Ba6#

2. ... Kxe4 3. Qe5#

1. ... Rxd3 2. Sg4+

2. ... Kxe4 3. Sf2#

1. ... Sxd3 2. Sef3+

2. ... Kxe4 3. Sd2#

1. ... Sc6 2. Sxc6+

2. ... Kxd3 3. Qd4#

1. ... Se6 2. Sg4+

2. ... Kxd3 3. Sf2#

1. ... Sf3 2. Sexf3+

2. ... Kxd3 3. Qd4#

1. ... Bxc5 2. Sd7+

2. ... Kxd3 3. Sxc5#

White Ps captured [Pe7] on the e-file and [Pg7] or possibly [Ph7] on the d-file after promotion.

Black Ps captured [Ra1], [Rh1] and [Pa2] after promotion on a8.

The Karlstrom defence 1..., Bxc5 is very well found. Even the paradoxical closing of the Bb7 after 2.Sc6+ is nice.

Of course there is an improvement:

6K1/bBp1Qp2/7p/2PPS3/1PpkPB2/1prP4/1qp4s/2s3S1 (11+12)

I think it is not worth saving two pieces compared to the previous version's content.

In the new version the "regular" Fleck is lost -

1. ... Sc6 2. Sxc6+ Kxd3 3. Qd4#

1. ... Se6 2. Sg4+ Kxd3 3. Sf2#

1. ... Sf3 2. Sexf3+ Kxd3 3. Qd4#

I think having both triple Fleck variations is a very valuable addition. One triplet defends from the threats but allows new continuations while the second triplet just separates while keeping the continuations from the threat. It magnifies the differences between the new and the old set.

The strategic Fleck with change of mates

is much more interesting (and difficult to do) than a mechanical (arid) Fleck without change.

But since you are the author of the Problem549, not the casual restorer, you can publish your preferred version with your name and without reference to my suggestions.

2s5/p4B1b/1b6/1S1P2P1/Rsp1P1QP/PSpkp3/2p5/2B2K2 (12+10)

1.Bh5! (2.Qe6/Qf4/Qg2, ... 3.Be2#)

1...., Sxd5 2.Qe6, Sf4 3.Qxc4#

Sc6 2.Qf4, Sd4 3.Qxe3#

Sa2 2.Qg2, Sxc1 3.Sxc1#

1...., cxb3/Bf5/Bg6 2.Rxb4/Qxf5/Bxf5

Strategic Fleck seems a good name. The other option is 'Pseudo Fleck'.

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