:: Igo Hatsuyôron 120 (2015)

Variations of the Professional Solution

In this chapter, we present only those variations, which are specific to the classical line of play.


    Variation Tree    

(.1) @ 725 ++Takes the guzumi point
@ 727 ++Closes the upper right corner towards the centre
@ 725Closes the upper right corner to the left
(.2) @ 728 ++Gives atari in the top left corner
@ 716Secures life for her group on the lower edge
(.1) @ 730aJigo Plays atari in the corner
@ 730b + 1 Occupies the guzumi point
@ 730a Continues with the "usual" endgame sequence
@ 730c + 1 Occupies the guzumi point
@ 730a Continues with the "usual" endgame sequence
@ 730caJigo Plays the hasami-tsuke
@ 730caaJigo Occupies a liberty
@ 730cab + 3 Dispenses with playing "her" kikashi in the bamboo joint
(.1) @ 730cac + 3 Plays her "kikashi" after having captured the hanezeki's tail
(.2) @ 730cac + 4 Plays the oki in the lower right "very late"
@ 730cab Occupies a liberty in the Main Semeai
@ 730caa Plays her own kikashi in the bamboo joint
@ 730ca + 1 Michael Redmond's kikashi
@ 730a Plays the "classical" push
(.2) @ 730d + 2 Plays the tsuke of Yamada Shinji 6p
@ 730e + 2 Continues with the "usual" endgame sequence
@ 730f + 3 Continues with the "usual" endgame sequence
@ 730gJigo Continues with the "usual" endgame sequence
@ 730f Plays the guzumi
@ 730e Occupies the guzumi point
@ 730d Plays the guzumi
@ 717Takes Black's nakade off the board
@ 730aJigo Plays atari in the corner
@ 717Gives atari in the nakade

@ 731 + 4Plays a "late" guzumi
@ 732 + 4 Starts the ko on the left edge
@ 735 + 1Finishes the ko inside the nakade on the left side
@ 732Plays the tsuke of Yamada Shinji 6p
@ 736 ++ (Ko)Re-captures the ko
@ 732Continues with the endgame in the upper left corner
@ 731 + 3Answers the guzumi locally
@ 718Connects his single stone in atari
@ 730aJigo Plays atari in the corner
@ 718Occupies the guzumi-point
@ 737a + 5 Retreats
@ 718Blocks Black's push

@ 738JigoPlays the hasami-tsuke in the upper right corner
@ 738a + 3 Michael Redmond's kikashi
(B) @ 738b + 2 Connects solidly
(C) @ 738c + 3 Plays the tsuke of Yamada Shinji
(D) @ 738d + 3 Plays the "classical" atari
@ 738h + 2 Captures White's two stones
@ 738d Blocks the corner
@ 738g + 1 Plays atari at top right
@ 738d Plays hane at the top left
@ 738f + 1 Connects at the top left
@ 738f + 1 Continues occupying liberties, connects 2nd hasami-tsuke stone later
@ 738f Defends the lower left corner
@ 738d Captures White's two stones
@ 738e + 2 Lives in the upper right
@ 738d Connects
@ 738a Gives atari
@ 738 Further occupies liberties
@ 739 + 4Gives atari on the hasami-tsuke stone
@ 738Plays nozoki on the upper edge
@ 740 ++Pre-empts White's endgame in the upper left corner
@ 738Answers the nozoki locally
@ 741 ++Connects the hasami-tsuke stone
@ 738Continues with occupying liberties
@ 718Pushes into the upper right corner from the left
@ 742 ++Pushes further into the upper right corner from the left
@ 744 ++Captures White's single stone in the upper right
@ 742Continues with occupying liberties
@ 719Takes a liberty on the left side
(A) @ 745 + 4Gives atari on Black's single stone at top (Semeai Variation)
@ 747JigoTakes the hanezeki's tail off the board
@ 745Closes her territory on the upper edge
(B) @ 749JigoPlays the tsuke of Yamada Shinji 6p (demonstrative continuation)
@ 720Takes the hanezeki's tail off the board (Capture Variation)
@ 751 + 2 Plays the tsuke of Yamada Shinji
@ 720Gives atari on Black's single stone on the upper edge
@ 752 + 3Connects the stone in atari
@ 721JigoCloses his territory in the top left corner

Copyright © 2017 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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