# [Retros] Mushikui Reconstruction (checkmate)

Juha Saukkola juha_saukkola at hotmail.com
Thu May 26 00:18:19 EDT 2011

Hi!

If you want to find something "thematical", try to find some math patterns like
2 3 4, 2 3 4 ,2 3 4,.. or
2, 2 3, 2 3 4, 2 3 4 5, 2 3 4 5 6 or
2 2 4, 2 2 4, 2 2 4,..

Even this have more content than your problem below:

+---a---b---c---d---e---f---g---h---+

| |

8 -R -S -B -K . Q . . 8

| |

7 -P -P -P -P . . . . 7

| |

6 . . . . . . . . 6

| |

5 . . . . . . . . 5

| |

4 . . . . . P . . 4

| |

3 . . . . . . . . 3

| |

2 P P P . . . P P 2

| |

1 R S B -S K B S R 1

| |

+---a---b---c---d---e---f---g---h---+
dia8.5 14 + 9

1.d2-d4 e7-e5 2.d4*e5 Qd8-f6 3.e5*f6 Ke8-d8 4.f6*g7 f7-f5 5.g7*h8=Q f5-f4 6.Qh
8*h7 f4-f3 7.Qh7*g8 f3*e2 8.f2-f4 e2*d1=S 9.Qg8*f8 dia

From: tsai39 at illinois.edu
To: retros at janko.at
Date: Wed, 25 May 2011 12:58:06 -0500
Subject: Re: [Retros] Mushikui Reconstruction (checkmate)

Hi everyone,

After I constructed an example that forces a draw, I continue to work on
valid mushikui sequence that forces checkmate ending, again without any
extra assumptions in the stipulation. I found this to be a very difficult
task, and I tried to compose such sequence for two whole days, desperately,
yet still without any success. But finally this morning I constructed my
first example that does the job.

1.** ** 2.**** ** 3.** **** 4.** ***** 5.** ***** 6.** *** 7.***** **
8.***** *** 9.***** *** 10.***** *** 11.*****

I can hardly imagine that there could be a shorter one that also forces
checkmate. But still I'm eager to see if anyone can come up with a shorter
one!

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1.d4 c5 2.dxc5 d6 3.a4 dxc5 4.a5 Qxa5+ 5.b4 Qxb4+ 6.c3 Qa4 7.Qxa4+ b5
8.Qxb5+ Nc6 9.Qxc6+ Bd7 10.Qxa8+ Bc8 11.Qxc8#

Mu-Tsun

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