實戰詰棋黑先追四勝013 - 五子棋

實戰詰棋黑先追四勝013 ORC virag 出題

A B C D E F G H I J K L M N O
15 ┌┬┬┬┬┬┬○┬┬┬┬┬┬┐
14 ├┼┼┼┼┼┼┼┼┼┼┼┼┼┤
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2 ├┼┼┼┼┼┼┼┼┼┼┼┼┼┤
1 └┴┴┴┴┴┴┴┴┴┴┴┴┴┘

[ 1]● ==> H8 [ 2]○ ==> H9 [ 3]● ==> J10 [ 4]○ ==> I9 [ 5]● ==> I10
[ 6]○ ==> J8 [ 7]● ==> G9 [ 8]○ ==> G10 [ 9]● ==> I8 [10]○ ==> I7
[11]● ==> K9 [12]○ ==> K7 [13]● ==> L6 [14]○ ==> L8 [15]● ==> J6
[16]○ ==> I6 [17]● ==> H7 [18]○ ==> F8 [19]● ==> G11 [20]○ ==> F10
[21]● ==> F11 [22]○ ==> H11 [23]● ==> I12 [24]○ ==> H13 [25]● ==> H12
[26]○ ==> J12 [27]● ==> G6 [28]○ ==> J9 [29]● ==> E10 [30]○ ==> E8
[31]● ==> D7 [32]○ ==> F5 [33]● ==> D11 [34]○ ==> E11 [35]● ==> E12
[36]○ ==> H15

好題目得之不易
請試著用眼睛看出正解

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