2014年9月13日土曜日

The final game of 3 to qualify for the RYU'OU(竜王) title match in 2014

You can see the game with board HERE.

The game score

ITODANI TetsuroHABU Yoshiharu
1P-762P-34
3P-264P-84
5P-256P-85
7G-788G-32
9P-2410Px24
11Rx2412P-86
13Px8614Rx86
15Rx3416B-33
17R-3618R-84
19R-2620S-22
21P*8722K-52
23S-4824S-72
25K-5826S-23
27G-3828R-24
29Rx2430Sx24
31R*8432P-74
33R-82+34Bx88+
35Sx8836B*55
37B*4638Bx46
39Px4640B*14
41B*3642S-25
43B-4744P*36
45P-1646Px37+
47Sx3748S-26
49Bx1450Px14
51P*3352N*33
53B*8354B*94
55Bx94+56Px94
57B*8358B*93
59+Rx7260Gx72
61Bx72+62Sx37+
63Nx3764R*29
65P*3966P*36
67S*6168K-42
69+Bx6370K-31
71+Bx3672Rx19+
73P*2374+Rx16
75+B-3576R*54
77G-6878L*55
79S*6680P*65
81Sx5582Rx55
83L*2484P*21
85S-52+86S*41
87+B-3488+R-36
89G*2290Px22
91Px22+92Gx22
93Lx22+94Kx22
95P*231-0

Comments


  • 16.B-33
The most popular move. 
11.N-33.. or 11.Bx88+ 12.SxB+ 13.Rx76... have been also played much. Another minor but playable line is thus: 11.Bx88+ 12.SxB+ 13.B*45 14.R-24 15.P*23 16.B*77 (if you had moved rook somewhere, then 17.Bx67+!! would make you serious)...
  • 32.P-74
32.P*83 looks natural, but 33.Rx24 34.BxR 35.Bx11+ 36.B-33 37.+Bx21 38.G-42 39.+B-31 40.Bx99+ 41.N*34 then Sente is winning.
  • 37.B*46
If you let +R escape onto 85 here, then 38.Bx88+ 39.Gx+B 40.R*79 41.S-59 42.S*78. Attacks by only 2 pieces tend to fail or not so harsh often, but this is exceptional.
  • 40.B*14
40.B*55 had once been played, but now concluded as dubious because when it proceeds like the line above, Sente's king has a hatchway of 47.
  • 48.S-26
Very impressive move. If you take this silver, then 50.Bx47+ 51.Gx+B 52.R*28 (or 51.Kx+B 52.R*49).
  • 52.Nx33
According to a study after the game, better was 52.B*25 of which Itodani had been afraid.
Then an imaginable progress is thus:
53.K-68 54.Nx33 55.B*83 56.Rx78+ 57.Kx+R 58.G*71 59.+Rx91 60.SxB 61.SxS 62.B-58+ 63.S*69 64.+BxS 65.Kx+B 66.B*55 67.P*34 68.Bx+R 69.PxN+ 70.R*49 71.R*59 72.Rx46+ 73.S-37 74.+Rx76 75.L*79 76.+Rx67 77.P*68 78.+R-65 79.+Px32 80.K-62...


Habu disliked such like the position above and just took the pawn on 33. However, he could not get a chance no more as a result.
  • 74.+Rx16
In postgame analysis they have dug deep into 74.L*54 75.P-75 76.+Rx16 77.+Bx54 78.Px+B 79.L*24 instead, which is more preserving but...


80.S*47 81.K-68... (If you take silver by gold, R*28 forking. And taking by king, then 82.B*36 83.K-56 84.R*62 85.S*53 86.P-55 87.KxP 88.+R-15 89.N-45 90.B-82 allows Gote to equalize)
80.S*51 81.S*53 82.B*36 83.K-68 84.P*21 85.S61-52+ 86.Sx+S 87.SxS+ 88.R*58 89.K-77 90.S*76 91.K-66 92.P*65 93.KxS 94.RxG+ 95.S-77 96.Px75 97.Kx65 98.+Rx67 99.P*66...
80.S*63 81.S*53 82.B*36 83.K-68 84.N-45 85.S61-52+ 86.Nx57+ 87.K-77 88.Sx+S 89.SxS+ 90.S*76 91.KxS 92.Px75 93.K-65 94.+R-15 95.N-45...
Sente has some advantage each line above and others.

Solution to the last problem

(on the way to edit)

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