[Retros] Mushikui Reconstruction (checkmate)

Mu-Tsun Tsai tsai39 at illinois.edu
Thu May 26 01:16:14 EDT 2011

> 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

If I didn't misunderstand you, then you're suggesting that this game will
induce a valid mushikui sequence?

Let's see. This game, written in PGNep format, is

1.d4 e5 2.dxe5 Qf6 3.exf6 Kd8 4.fxg7 f5 5.gxh8=Q f4 6.Qxh7 f3 7.Qxg8 fxe2
8.f4 exd1=N 9.Qxf8#

Convert this to mushikui sequence and obtain

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

Now this sequence has at least 600 solutions (and then I quit the program to
save time). Some samples:

1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 a6 5.bxa8=N e5 6.Rxa6 e4 7.Re6+ dxe6
8.d4 exd3ep 9.Nxc7+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c6 5.bxa8=Q g5 6.Rxa7 g4 7.Rxd7 Kxd7
8.h4 gxh3ep 9.Qxd8+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=N c4 6.Rxa7 c3 7.Rxd7 cxb2
8.g3 bxc1=R 9.Rxd8+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=B c4 6.Rxa7 c3 7.Rxd7 cxb2
8.d3 bxc1=B 9.Rxe7+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q g5 6.Rxa7 g4 7.Rxd7 Qxa8
8.h4 gxh3ep 9.Rxe7+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q c4 6.Rxa7 c3 7.Rxd7 cxb2
8.g3 bxc1=Q 9.Rxe7+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q c4 6.Rxa7 c3 7.Rxd7 cxb2
8.g3 bxc1=Q 9.Rxd8#
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q c4 6.Rxa7 c3 7.Rxd7 cxb2
8.h4 bxc1=R 9.Rxe7+
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q c4 6.Rxa7 c3 7.Rxd7 cxb2
8.h4 bxc1=R 9.Rxd8#
1.a4 b5 2.axb5 Na6 3.bxa6 Bb7 4.axb7 c5 5.bxa8=Q c4 6.Rxa7 c3 7.Rxd7 cxb2
8.h4 bxc1=N 9.Qxd8#

So I think indeed it has more "content" than my problem, including
solutions.

Mu-Tsun