[Event "Kenkyukai"]
[Site "?"]
[Date "2017.03.09"]
[Round "?"]
[White "Ikeda"]
[Black "Kawachi"]
[Result "0-1"]
[GameType "20"]
[PlyCount "108"]

1. 34-30 17-21 2. 31-26 20-25 3. 26x17 12x21 4. 32-28 25x34 5. 40x29
19-23 6. 28x19 14x34 7. 39x30 10-14 8. 44-39 7-12 9. 37-32 1-7
10. 50-44 5-10 11. 41-37 14-19 12. 30-25 10-14 13. 44-40 { Computer
recommends 46-41. } 11-17 14. 40-34 7-11 15. 34-30 { Computer says
-0.04. Slightly black has an advantag. But I don't know why. } 18-23
( { Computer recommends 21-27. } 15... 21-27 16. 32x21 16x27 { White
has 5 pieces for attacking. Black has 3 pieces for defending. So I
judged this post is weak. How should black defend when white attacks
27 with the 5 pieces? } 17. 37-32 11-16 18. 32x21 16x27 19. 42-37
19-23 20. 37-32 6-11 21. 32x21 17x26 { Black lost 27. But black has
many pieces to move to white right wing. Computer doesn't care losing
27. } 22. 46-41 12-17 23. 41-37 17-22 ) 16. 47-41 21-27 17. 32x21
16x27 18. 37-32 13-18 ( 18... 11-16 { Computer recommends 11-16. }
19. 32x21 16x27 20. 41-37 14-20 { I can't understand why this move is
good. } 21. 25x14 9x20 22. 46-41 ) 19. 32x21 17x26 20. 41-37 9-13
21. 30-24 19x30 22. 25x34 { Computer estimates -0.04. Because of
tempi ? Black has 5 more tempi. } 11-17 ( 22... 15-20 { Computer
recommends this move. But why is this good ? I don't know. } )
23. 37-32 6-11 24. 34-29 23x34 25. 39x30 { White goes to right side.
But computer seems to judge this move is not goo. -0.05. } 4-9
26. 43-39 11-16 27. 49-43 17-21 28. 45-40 12-17 29. 40-34 17-22
30. 34-29 ( 30. 32-27 { Computer recommends the following. } 22x31
31. 36x27 21x32 32. 38x27 ) 30... 21-27 { Computer estimates -0.21.
It is the point to get 27. } 31. 32x21 16x27 32. 30-25 27-31 (
32... 14-20 { Computer says this move is goo. But why ? Because Black
has 27.White does not have 49. So black can keep 27. What black
should do in white left wing is to keep 27, not to move 27-31. Whte
can not develop white left wing. Black had control white left wing.
So black's next aim is to control white right wing. I think 14-20 is
the move. Watch black moves. It is beautiful. } $902 33. 25x14 9x20
34. 39-34 13-19 35. 34-30 20-25 36. 30-24 19x30 37. 35x24 3-9
38. 43-39 9-13 39. 42-37 13-19 40. 24x13 8x19 41. 39-34 2-8 42. 37-32
27-31 43. 36x27 22x31 { White 46 does not develop and can not develop
because of black 31. } ) 33. 36x27 22x31 34. 42-37 { Good move. Black
lost his 27. And black lost tempi. } 31x42 35. 48x37 14-20 (
35... 18-23 { Computer recommends this move. Because black gets tempi
and goes to center ? } 36. 29x18 13x22 ) 36. 25x14 9x20 37. 38-32 3-9
38. 35-30 18-22 39. 46-41 20-24 { Good move } 40. 30x19 13x24
41. 29x20 15x24 42. 39-34 9-14 43. 32-28 22-27 44. 41-36 8-13 (
44... 8-12 { 8-12 is good, 8-13 is not better than 8-12. But why ? I
think because after 8-13 white has a gap in 19. But after 8-12, there
is no gap. } 45. 34-29 14-20 46. 43-39 2-8 47. 29-23 20-25 48. 39-34
) 45. 28-23 ( 45. 43-38 { Computer recommends this move. White can
make black 26 go back. } 2-8 46. 37-32 8-12 47. 32x21 26x17 )
45... 2-8 46. 43-38 ( 46. 43-39 $902 8-12 47. 34-29 14-20 48. 23-19
26-31 49. 19x17 31x42 50. 17-11 42-47 51. 11-6 27-31 52. 36x27 20-25
53. 29x20 47x15 { (-0.04;-1.32/13) } ) 46... 8-12 { White has no good
move. } 47. 33-28 ( 47. 36-31 $902 27x36 48. 38-32 26-31 49. 37x26
36-41 50. 26-21 14-20 51. 21-16 13-18 52. 34-29 41-46 53. 32-27 46x19
54. 16-11 12-17 55. 11x13 19x8 { (-1.32;-9.99/13) } ) 47... 13-18
48. 37-31 18x40 49. 31x22 40-44 50. 28-23 24-29 51. 23x34 44-49
52. 38-33 { Black had a simple way to win. } 49-44 ( 52... 12-17
53. 22x11 26-31 54. 36x27 49x40 ) 53. 33-29 44x11 54. 29-24 11-16 0-1