| Quest of the lost systems |
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| Chapter One: Yagura |
| Section 3: The Morishita System |
The next game will show you how Black fared when White attacked from
the 5th file. Diagram 7 is from the game 3 of the Kisei-sen played by Habu(b)
and Tanigawa(w) on July 9, 1993. Take note of the last move on the diagram,
(b)L-1g. It used to be customary to play P-4f instead, but L-1g was decided
to be better against White's P-5e.
9 8 7 6 5 4 3 2 1
+---------------------------+
|wL wN * * * * * wN wL |a White in hand: nothing
| * wR * * * * wG wK * |b
|wP * * wP wS wG wS wP * |c
| * * wP wB wP wP wP * wP |d
| * wP * * * * * * * |e
| * * bP bP bP * bP bP bP |f
|bP bP bS bG * bP bN * bL |g
| * bK bG bB * bS bR * * |h Black in hand: nothing
|bL bN * * * * * * * |i
+---------------------------+
Diagram 7. Habu(b) vs Tanigawa(w), up to L-1g.
P-5e; P-6e B-7c; Px5e P-6d; S-5g Px6e;
S-5f R-6b; N-2e S-2d; B-4f S-6d; R-1h B-8d;
P-1e B-3i+; Px1d P*1b; P-3e (Diagram 8)
9 8 7 6 5 4 3 2 1
+---------------------------+
|wL wN * * * * * wN wL |a White in hand: nothing
| * * * wR * * wG wK wP |b
|wP * * * * wG * wP * |c
| * * wP wS * wP wP wS bP |d
| * wP * wP bP * bP bN * |e
| * * bP * bS bB * bP * |f
|bP bP bS bG * bP * * bL |g
| * bK bG * * * * * bR |h Black in hand: 2Ps
|bL bN * * * * wB+ * * |i
+---------------------------+
Diagram 8. Up to (b)P-3e.
As was shown above, in response to White's P-5e, Black first plays P-6e
and then Px5e. If White plays Bx5e, Black moves the right S to 5g,then on
6f. When (w)P-6d is played, as was in this game, Black takes the suzume-zashi
formation. The actual game ended in Black's win after a relentless attack
by Habu.
Thus, the Morishita System can be called the first responsive type of the
Yagura opening. In response to White's passive attitude, Black takes the
S-4g formation; against White's bo-gin, the S-6f formation. As for the R's
positioning, it varies according to the opponent's moves, such as on the
first file for suzume-zashi, on the third file, or on the 5th file for the
center attack.
