  It is currently Sat Dec 05, 2020 12:01 am

 All times are UTC - 8 hours [ DST ]

 Print view Previous topic | Next topic
Author Message Post subject: Carpenter's Square Endgame Evaluation #1 Posted: Mon Oct 21, 2019 10:52 pm
 Tengen

Posts: 5204
Liked others: 0
Was liked: 720
I evaluate the following carpenter's square as a local endgame on the marked locale. I apply the modern endgame theory explained in .

`[go]\$\$B Carpenter's Square\$\$------------------\$\$. . . C C C C C C|\$\$. . X . X W C C C|\$\$. . . . X W C C C|\$\$. . . . X W W W C|\$\$. . . . X X X X C|\$\$. . . . . . . . .|\$\$. . . . . . . X .|\$\$. . . . . . . . .|[/go]`

For Black's start, I presume this sequence:

`[go]\$\$B Black's Sequence\$\$------------------\$\$. . . . . 4 9 a b|\$\$. . X . X O 3 1 2|\$\$. . . . X O . 8 6|\$\$. . . . X O O O 5|\$\$. . . . X X X X 7|\$\$. . . . . . . . .|\$\$. . . . . . . X .|\$\$. . . . . . . . .|[/go]`

Furthermore, I assume this sequence and the studied variations to be dominating. Further study should verify this. If a different ko variation should be dominating, the values might have to be corrected slightly. White starts on the 2-2, of course.

The most important conclusions are as follows:

Initial position:

Count = 4 2/3

Move value = 11 2/3

Type = gote

Length of sequence worth playing successively = 1

In practice, it can often be correct to play the first five moves successively because their gains are at least 10 2/3 and therefore similar to the initial move value. The gains of the 6th and especially 7th moves are much smaller though: 5 2/3 and 1 2/3.

Moves with move value 9 2/3 (as in the created ko):

Moves 8 to 11.

In particular, it would be a mistake to derive the wrong initial values from the sente follower after move 10 as the count 2 2/3 and move value 9 2/3, as done in the book Yose Size List.

Black's alternating sequence

Code:
after move   count     move   gain      move value  type    length of successive sequence(s)

0            4 2/3     1      11 2/3    11 2/3      gote    1
1            16 1/3    2      10 2/3    5 2/3       gote    5
2            5 2/3     3      10 2/3    10 2/3      gote    3
3            16 1/3    4      11 11/12  5 2/3       gote    3
4            4 5/12    5      11 11/12  7 11/12     gote    1
5            16 1/3    6      5 2/3     5 2/3       gote    1
6            10 2/3    7      1 2/3     1 2/3       sente   Black's 5 White's 4
7            12 1/3    8      9 2/3     9 2/3       sente   4
8            2 2/3     9      9 2/3     9 2/3       gote    3
9            12 1/3    10     9 2/3     9 2/3       sente   2
10           2 2/3     11     9 2/3     9 2/3       ko      Black's 2 White's 1
11           12 1/3                     9 2/3       ko      Black's 1 White's 2

Copy and save the following SGF file, best viewed with GoWrite:

(;SZCA[UTF-8]GMFFSTAP[GOWrite:3.0.10]AB[mb][oe][ob][pe][qe][re][oc][od][rg]PMFG[259:]C[Each just stated value is a count.

The locale is marked.

M is the move value of the currently studied hypothesis and position.

Gb1, Gb2,... are the gains of move 1, 2,... of Black's alternating sequence of the currently studied hypothesis and position.

Gw1, Gw2,... are the gains of move 1, 2,... of White's alternating sequence of the currently studied hypothesis and position.

So far, we assume, but do not verify, that Black's alternating sequence and its variations shown are dominating.

Refuted Hypotheses

Black's 7/9/11-move sequence

gote move value M = (12 1/3 - (-7)) / 2 = (19 1/3) / 2 = 9 2/3

M > Gb6
9 2/3 > 1 2/3

Refuted Hypotheses

Black's 8/10-move sequence

sente move value M = 2 2/3 - (-7) = 9 2/3

M > Gb6
9 2/3 > 1 2/3

Refuted Hypothesis

Black's 6-move sequence

sente move value M = 10 2/3 - (-7) = 17 2/3

M > Gb6
17 2/3 > 1 2/3

Refuted Hypotheses

Black's 3/5-move sequence

gote move value M = (16 1/3 - (-7)) / 2 = (23 1/3) / 2 = 11 2/3

M > Gb2
11 2/3 > 10 2/3

Refuted Hypothesis

Black's 4-move sequence

sente move value M = 4 5/12 - (-7) = 11 5/12

M > Gb2
11 5/12 > 10 2/3

Refuted Hypothesis

Black's 2-move sequence

sente move value M = 5 2/3 - (-7) = 12 2/3

M > Gb2
12 2/3 > 10 2/3

Confirmed Hypothesis

gote count = (16 1/3 + (-7)) / 2 = (9 1/3) / 2 = 4 2/3

gote move value M = (16 1/3 - (-7)) / 2 = (23 1/3) / 2 = 11 2/3

Gb1 = 11 2/3

Gw1 = 11 2/3

M <= Gb1
11 2/3 <= 11 2/3

M <= Gw1
11 2/3 <= 11 2/3
]PW[ ]SQ[rd][sd][se][na][oa][pa][qa][ra][sa][pb][qb][rb][sb][pc][qc][rc][sc][pd][qd]AW[rd][pc][pb][pd][qd]PB[ ]GN[ ]
(
;B[rb]
;FG[259:]C[16 1/3

position after move 1

refuted hypotheses

White's 6/8/10-move sequence

sente move value M = 9 2/3

M > Gw6
9 2/3 > 1 2/3

refuted hypotheses

White's 7/9-move sequence

gote move value M = (22 - 2 2/3) / 2 = 9 2/3

M > Gw6
9 2/3 > 1 2/3

confirmed hypothesis

White's 5-move sequence

gote count = (22 + 10 2/3) / 2 = (32 2/3) / 2 = 16 1/3

gote move value M = (22 - 10 2/3) / 2 = (11 1/3) / 2 = 5 2/3

Gb1 = 5 2/3

Gw1 = 10 2/3

M <= Gb1
5 2/3 <= 5 2/3

M <= Gw1, Gw2, Gw3, Gw4, Gw5
5 2/3 <= 10 2/3, 10 2/3, 11 11/12, 11 11/12, 5 2/3]PM
(
;W[sb]
;FG[259:]C[5 2/3

position after move 2

refuted hypotheses

Black's 5/7/9-move sequence and White's 1/3-move sequence

gote move value M = (12 1/3 - (-5)) / 2 = (17 1/3) / 2 = 8 2/3

M > Gb5
8 2/3 > 1 2/3

refuted hypotheses

Black's 5/7/9-move sequence and White's 2-move sequence

sente move value M = 12 1/3 - 0 = 12 1/3

M > Gb5
12 1/3 > 1 2/3

refuted hypotheses

Black's 6/8-move sequence and White's 1/3-move sequence

sente move value M = 2 2/3 - (-5) = 7 2/3

M > Gb5
7 2/3 > 1 2/3

refuted hypotheses

Black's 4-move sequence and White's 1/3-move sequence

sente move value M = 10 2/3 - (-5) = 15 2/3

M > Gb4
15 2/3 > 5 2/3

refuted hypothesis

Black's 1/3-move sequence and White's 3-move sequence

gote move value M = (16 1/3 - (-5)) / 2 = (21 1/3) / 2 = 10 2/3

M > Gw3
10 2/3 > 5

refuted hypothesis

Black's 3-move sequence and White's 2-move sequence

sente move value M = 16 1/3 - 0 = 16 1/3

M > Gw2
16 1/3 > 5

confirmed hypothesis

Black's 3-move sequence and White's 1-move sequence

gote count = (16 1/3 + (-5)) / 2 = (11 1/3) / 2 = 5 2/3

gote move value M = (16 1/3 - (-5)) / 2 = (21 1/3) / 2 = 10 2/3

Gb1 = 10 2/3

Gw1 = 10 2/3

M <= Gb1, Gb2, Gb3
10 2/3 <= 10 2/3, 11 11/12, 11 11/12

M <= Gw1
10 2/3 <= 10 2/3]PM
(
;B[qb]
;FG[259:]C[16 1/3

position after move 3

refuted hypotheses

White's 4/6/8-move sequence

sente move value M = 22 - 12 1/3 = 9 2/3

M > Gw4
9 2/3 > 1 2/3

refuted hypotheses

White's 5/7-move sequence

gote move value M = (22 - 2 2/3) / 2 = (19 1/3) / 2 = 9 2/3

M > Gw4
9 2/3 > 1 2/3

confirmed hypothesis

White's 3-move sequence

gote count = (22 + 10 2/3) / 2 = (32 2/3) / 2 = 16 1/3

gote move value M = (22 - 10 2/3) / 2 = (11 1/3) / 2 = 5 2/3

Gb1 = 5 2/3

Gw1 = 16 1/3 - 4 5/12 = 11 11/12

M <= Gb1
5 2/3 <= 5 2/3

M <= Gw1, Gw2, Gw3
5 2/3 <= 11 11/12, 11 11/12, 5 2/3]PM
(
;C[ ]W[pa]
;FG[259:]C[4 5/12

position after move 4

refuted hypotheses

Black's 3/5/7-move sequence and White's 4/2-move sequence

sente move value M = 12 1/3 - 0 = 12 1/3

M > Gb2
12 1/3 > 1 2/3

refuted hypotheses

Black's 3/5/7-move sequence and White's 3-move sequence

gote move value M = (12 1/3 - (-5)) / 2 = (17 1/3) / 2 = 8 2/3

M > Gb2
8 2/3 > 1 2/3

refuted hypotheses

Black's 3/5/7-move sequence and White's 1-move sequence

gote move value M = (12 1/3 - (-3 1/2)) / 2 = (15 5/6) / 2 = 7 11/12

M > Gb2
7 11/12 > 1 2/3

refuted hypotheses

Black's 6/4-move sequence and White's 3-move sequence

sente move value M = 2 2/3 - (-5) = 7 2/3

M > Gb2
7 2/3 > 1 2/3

refuted hypotheses

Black's 6/4-move sequence and White's 1-move sequence

sente move value M = 2 2/3 - (-3 1/2) = 6 1/6

M > Gb2
6 1/6 > 1 2/3

refuted hypothesis

Black's 2-move sequence and White's 3-move sequence

sente move value M = 10 1/2 - (-5) = 15 1/2

M > Gb2
15 1/2 > 1 2/3

refuted hypothesis

Black's 2-move sequence and White's 1-move sequence

gote move value M = 10 1/2 - (-3 1/2) = 14

M > Gb2
14 > 1 2/3

refuted hypotheses

Black's 1-move sequence and White's 4/2-move sequence

sente move value M = 12 1/3 - 0 = 12 1/3

M > Gw2
12 1/3 > 3 1/2

refuted hypothesis

Black's 1-move sequence and White's 3-move sequence

gote move value M = (12 1/3 - (-5)) / 2 = (17 1/3) / 2 = 8 2/3

M > Gw2
8 2/3 > 3 1/2

confirmed hypothesis

Black's 1-move sequence and White's 1-move sequence

gote count = (12 1/3 + (-3 1/2)) / 2 = (8 5/6) / 2 = 4 5/12

gote move value M = (12 1/3 - (-3 1/2)) / 2 = (15 5/6) / 2 = 7 11/12

Gb1 = 7 11/12

Gw1 = 7 11/12

M <= Gb1
7 11/12 <= 7 11/12

M <= Gw1
7 11/12 <= 7 11/12
]PM
(
;B[sd]
;FG[259:]C[16 1/3

position after move 5

Hypothesis 1

White's long sente with White's 6-move sequence

sente count = 12 1/3

sente move value M = 22 - 12 1/3 = 9 2/3

Gb1 = 9 2/3

Gw1 = 1 2/3

refuting Hypothesis 1\:

M > Gw1
9 2/3 > 1 2/3

Hypothesis 2

White's long gote with White's 5-move sequence

gote count = (22 + 2 2/3) / 2 = (24 2/3) / 2 = 12 1/3

gote move value M = (22 - 2 2/3) / 2 = (19 1/3) / 2 = 9 2/3

Gb1 = 9 2/3

Gw1 = 1 2/3

refuting Hypothesis 2\:

M > Gw1
9 2/3 > 1 2/3

Hypothesis 3

White's long sente with White's 4-move sequence

sente count = 12 1/3

sente move value M = 22 - 12 1/3 = 9 2/3

Gb1 = 9 2/3

Gw1 = 1 2/3

refuting Hypothesis 3\:

M > Gw1
9 2/3 > 1 2/3

Hypothesis 4

White's long gote with White's 3-move sequence

gote count = (22 + 2 2/3) / 2 = (24 2/3) / 2 = 12 1/3

gote move value M = (22 - 2 2/3) / 2 = (19 1/3) / 2 = 9 2/3

Gb1 = 9 2/3

Gw1 = 1 2/3

refuting Hypothesis 4\:

M > Gw1
9 2/3 > 1 2/3

Hypothesis 5

White's local sente with White's 2-move sequence

sente count = 12 1/3

sente move value M = 22 - 12 1/3 = 9 2/3

Gb1 = 9 2/3

Gw1 = 1 2/3

refuting Hypothesis 5\:

M > Gw1
9 2/3 > 1 2/3

Hypothesis 6

White's local gote with White's 1-move sequence

gote count = (22 + 10 2/3) / 2 = (32 2/3) / 2 = 16 1/3

gote move value M = (22 - 10 2/3) / 2 = (11 1/3) / 2 = 5 2/3

Gb1 = 5 2/3

Gw1 = 5 2/3

confirming Hypothesis 6\:

M <= Gb1
5 2/3 <= 5 2/3

M <= Gw1
5 2/3 <= 5 2/3]PM
(
;W[sc]
;FG[259:]C[position after move 6

Hypothesis 1

White's long sente with Black's 5-move sequence and White's 4-move sequence

sente count = 10 2/3

sente move value M = 12 1/3 - 10 2/3 = 1 2/3

Gb1 = 1 2/3

Gw1 = 9 2/3

confirming Hypothesis 1\:

M <= Gb1, Gb2, Gb3, Gb4, Gb5
1 2/3 <= 1 2/3, 9 2/3, 9 2/3, 9 2/3, 9 2/3

M <= Gw1, Gw2, Gw3, Gw4
9 2/3 <= 9 2/3, 9 2/3, 9 2/3, 9 2/3]PM
(
;B[se]
;FG[259:]C[position after move 7

Hypothesis 1

White's long sente

sente count = 12 1/3

sente move value M = 22 - 12 1/3 = 9 2/3

Gb1 = 9 2/3

Gw1 = 9 2/3

confirming Hypothesis 1\:

M <= Gb1
9 2/3 <= 9 2/3

M <= Gw1, Gw2, Gw3, Gw4
9 2/3 <= 9 2/3, 9 2/3, 9 2/3, 9 2/3]PM
(
;W[rc]
;FG[259:]C[position after move 8

Hypothesis 1

Black's long gote

gote count = (12 1/3 + (-7)) / 2 = (5 1/3) / 2 = 2 2/3

gote move value M = (12 1/3 - (-7)) / 2 = (19 1/3) / 2 = 9 2/3

Gb1 = 9 2/3

Gw1 = 9 2/3

confirming Hypothesis 1\:

M <= Gb1, Gb2, Gb3
9 2/3 <= 9 2/3, 9 2/3, 9 2/3

M <= Gw1
9 2/3 <= 9 2/3]PM
(
;B[qa]
;FG[259:]C[position after move 9

Hypothesis 1

White's local sente

sente count = 12 1/3

sente move value M = 22 - 12 1/3 = 9 2/3

Gb1 = 9 2/3

Gw1 = 9 2/3

confirming Hypothesis 1\:

M <= Gb1
9 2/3 <= 9 2/3

M <= Gw1, Gw2
9 2/3 <= 9 2/3, 9 2/3]PM
(
;W[ra]
;FG[259:]C[position after move 10

ordinary ko

move value
(22 - (-7)) / 3 = 29/3 = 9 2/3

count
-7 + 1 * 9 2/3 = 2 2/3]PM
(
;B[sa]
;FG[259:]PMMNC[position after move 11

ordinary ko

move value
(22 - (-7)) / 3 = 29/3 = 9 2/3

count
22 - 1 * 9 2/3 = 12 1/3]
(
;W[ra];B[tt];C[-7]W[qc]
)
(
;FG[259:]PM;B[ra]C
)

)
(
;FG[259:]MNPM
(
;B[sa];W[tt];B[ra]C
)
(
;FG[259:]PM;C[-7]W[qc]
)

)

)
(
;FG[259:]MNPM
(
;B[ra]C
)
(
;FG[259:]PM;C[2 2/3]W[ra]
;B[sa]C[12 1/3

Gw2 = 9 2/3]
)

)

)
(
;FG[259:]MNPM
(
;B[qa]C[12 1/3]
;C[2 2/3

Gb2 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gb3 = 9 2/3]
)
(
;FG[259:]PM;C[-7]W[ra]
)

)

)
(
;FG[259:]MNPM
(
;B[rc]C
)
(
;FG[259:]PM;C[2 2/3]W[rc]
;B[qa]C[12 1/3

Gw2 = 9 2/3]
;C[2 2/3

Gw3 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gw4 = 9 2/3]
)

)

)
(
;FG[259:]MNPM
(
;B[se]C[12 1/3]
;C[2 2/3

Gb2 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gb3 = 9 2/3]
;C[2 2/3

Gb4 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gb5 = 9 2/3]
)
(
;FG[259:]PM
;C[Hypothesis 1

Black's long gote

gote count = (10 2/3 + (-8 2/3)) / 2 = 2/2 = 1

gote move value M = (10 2/3 - (-8 2/3)) / 2 = (19 1/3) / 2 = 9 2/3

Gb2 = 11 1/3

Gw2 = 9 2/3

confirming Hypothesis 1\:

M <= Gb2, Gb3, Gb4
9 2/3 <= 9 2/3, 9 2/3, 9 2/3

M <= Gw2
9 2/3 <= 9 2/3]W[ra]
(
;B[qa]C[10 2/3

Gw2 = 9 2/3]
;C[best because W avoids approach ko

2 2/3 + (-1 2/3) = 1

Gw3 = 9 2/3]W[rc]
;B[sa]C[10 2/3

Gw4 = 9 2/3

After dissolution of the ko, the count of the remaining endgame with W's privilege on the right side, with a locale temporarily expanded by one intersection, is\: -2/3

Shrinking the expanded locale means modifying the count by -1.

Accounted for the initial locale, the the remaining endgame has the adjusted count -1 2/3.

In the initial locale, the count is 12 1/3.

In the initial locale, the total count including the remaining local endgame is 12 1/3 + (-1 2/3) = 10 2/3.]
)
(
;FG[259:]MNPM
;C[simply speaking, this is the best move

-7 + (-1 2/3) = -8 2/3]W[rc]
)

)

)

)
(
;FG[259:]MNPM
(
;B[sc]C
)
(
;FG[259:]C[2 2/3

Gw3 = 9 2/3]PM
;C[10 2/3]W[sc]
;B[se]C[12 1/3

Gw2 = 1 2/3]
;C[2 2/3

Gw3 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gw4 = 9 2/3]
;C[2 2/3

Gw5 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gw6 = 9 2/3]
)

)

)
(
;FG[259:]MNPM
(
;B[sd]C[12 1/3]
;C[10 2/3

Gb2 = 1 2/3]W[sc]
;B[se]C[12 1/3

Gb3 = 1 2/3]
;C[2 2/3

Gb4 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gb5 = 9 2/3]
;C[2 2/3

Gb6 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gb7 = 9 2/3]
)
(
;FG[259:]PM
;C[-3 1/2

best choice because possible seki is better than the kos

In locale, white follower's count -8.

In expanded locale, white follower's count -7.

In locale with accounting remaining endgame of expanded locale to the locale, white follower's count -7.

Hypothesis 1

Black's long gote

gote count = -3 1/2

gote move value M = 3 1/2

Gb2 = 3 1/2
Gb3 = 12
Gb4 = 5

Gw2 = 3 1/2

confirming Hypothesis 1\:

M <= Gb2, Gb3, Gb4
3 1/2 <= 3 1/2, 12, 5

M <= Gw2
3 1/2 <= 3 1/2]W[rc]
;B[ra]C[best

sente count 0

Gw2 = 3 1/2]
;C[sente seki is best

with expanded locale\:

gote count -5

Gw3 = 12]W[qa]
;B[sd]C[0

Gw4 = 5]
)

)

)
(
;FG[259:]MNPM
(
;B[pa]C
)
(
;FG[259:]PM;C[4 5/12]W[pa]
;B[sd]C[16 1/3

Gw2 = 11 11/12]
;C[10 2/3

Gw3 = 5 2/3]W[sc]
;B[se]C[12 1/3

Gw4 = 1 2/3]
;C[2 2/3

Gw5 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gw6 = 9 2/3]
;C[2 2/3

Gw7 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gw8 = 9 2/3]
)

)

)
(
;FG[259:]MNPM
;B[qb]C[16 1/3]
;C[4 5/12

Gb2 = 11 11/12]W[pa]
;B[sd]C[16 1/3

Gb3 = 11 11/12]
;C[10 2/3

Gb4 = 5 2/3]W[sc]
;B[se]C[12 1/3

Gb5 = 1 2/3]
;C[2 2/3

Gb6 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gb7 = 9 2/3]
;C[2 2/3

Gb8 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gb9 = 9 2/3]
)

(
;FG[259:]MNPM
;C[-5

because

Black next sente result -5

White next result -6]W[rc]
;B[sd]C[0

because Black next sente result 0

Gw2 = 5]
;C[-5

Gw3 = 5]W[ra]
)

)
(
;FG[259:]MNPM
;B[sd]C
)

(
;FG[259:]MNPM
;C[5 2/3]W[sb]
;B[qb]C[16 1/3

Gw2 = 10 2/3]
;C[4 5/12

Gw3 = 11 11/12]W[pa]
;B[sd]C[16 1/3

Gw4 = 11 11/12]
;C[10 2/3

Gw5 = 5 2/3]W[sc]
;B[se]C[12 1/3

Gw6 = 1 2/3]
;C[2 2/3

Gw7 = 9 2/3]W[rc]
;B[qa]C[12 1/3

Gw8 = 9 2/3]
;C[2 2/3

Gw9 = 9 2/3]W[ra]
;B[sa]C[12 1/3

Gw10 = 9 2/3]
)

)
(
;FG[259:]PM;C[-7]W[rb]
)

)

 This post by RobertJasiek was liked by: Gomoto
Top  Post subject: Re: Carpenter's Square Endgame Evaluation #2 Posted: Mon Oct 21, 2019 11:57 pm
 Honinbo

Posts: 10555
Liked others: 3502
Was liked: 3313
Many thanks, Robert! You may need some SGF tags in that post. I did a fairly thorough analysis of the Carpenter's Square in the early 2000s. If I didn't trust you I might try to dig it up now. (Java problems on my machine make that difficult at the moment.) Sometime this year I may have something to add to the discussion.

_________________
At some point, doesn't thinking have to go on?

My two main guides in life:
My mother and my wife. Everything with love. Stay safe.

Top  Post subject: Re: Carpenter's Square Endgame Evaluation #3 Posted: Tue Oct 22, 2019 12:16 am
 Tengen

Posts: 5204
Liked others: 0
Was liked: 720
SGF tags do not help because my file is more complicated on its SGF-level than supported here.

Your later additions are welcome, also because it is so easy to make accidental mistakes, such as overlooking another but relevant variation.

Top  Post subject: Re: Carpenter's Square Endgame Evaluation #4 Posted: Tue Oct 22, 2019 3:55 am
 Honinbo

Posts: 10555
Liked others: 3502
Was liked: 3313
Here is an SGF with some Carpenter's Square variations. For evaluation you need to add more, OC. _________________
At some point, doesn't thinking have to go on?

My two main guides in life:
My mother and my wife. Everything with love. Stay safe.

 This post by Bill Spight was liked by: Gomoto
Top  Post subject: Re: Carpenter's Square Endgame Evaluation #5 Posted: Tue Oct 22, 2019 5:26 am
 Gosei

Posts: 1634
Location: Earth
Liked others: 609
Was liked: 279
Gomoto, how do you evaluate the Carpenter"s Square?

I try to avoid it, I lost once a tournament game because misevaluating it.

I have only found one pro game with carpenter square in my database of recent games (It is a game of Yeonwoo by the way! Perhaps something for her channel.):

Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending

 All times are UTC - 8 hours [ DST ]

#### Who is online

Users browsing this forum: No registered users and 1 guest

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ Life In 19x19.com General Topics    Introductions and Guidelines    Off Topic    Announcements    General Go Chat    Beginners    Amateurs    Professionals       Lee Sedol vs Gu Li    Go Rules    Forum/Site Suggestions and Bugs    Creative writing    Tournaments       Ride share to tournaments Improve Your Game    Game Analysis    Study Group    Teachers/Club Leaders       Teacher advertisements    Study Journals L19²GO (Malkovich)    1-on-1 Malkovich games    Big Brother Malkovich games    Rengo Games    Other versions of turn-based games Go Gear    Go Books    Go Book Reviews    Computer Go    Gobans and other equipment    Trading Post    New Products/Upgrades/Sales Go Club Forums    Go Club Discussions       Honinbo Go League    American Go Association Forum       Go Congress 2011 volunteers       AGA volunteers ( non-congress)    Australian Go Association    European Go Federation Forum    Singapore Weiqi Association    KGS    ASR League    IGS    OGS    Tygem    WBaduk    Turn Based Servers    Insei League Events    Kaya.gs       King of the Hill