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| − | A forcing move is a move to which opponent has to answer locally to defend against an immediate threat. | + | A move is forcing when opponent has to answer locally to hold their advantage in the key area of the board. |
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| − | == Example ==
| + | A move can be mistakenly taken for a forcing one if it steals advantage in an area, but this area lost it's importance so that opponent benefits more from [[Tenuki|tenuki]]. |
| − | <hexboard size="6x6"
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| − | coords="show"
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| − | contents="R :d3 B :e4 R :e3 B :b3 R :b4 E *:c4 E *:c3"
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| − | /><br/>
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| − | | + | |
| − | In this position blue player has 2 forcing moves to make - c4 and c3. In case of playing c3, red has to defend with c4. In case of playing c4, red has to defend with c3. Otherwise red loses the game.
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| − | Notice that moves on a4, a5, f2 and f3 are not forcing. Against a4, a5 red has a choice of playing b5 which improves his position. Similarly, against f2, f3 red should play d2.
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| − | == The point ==
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| − | There is a use for making a forcing move. In certain conditions a player can benefit from it and even a tiny gain may influence who wins the game. Look at the following example:
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| − | <hexboard size="9x9"
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| − | coords="show"
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| − | contents="R :h4 B :d4 R :e5 B :g6 R :c6 E *:d6 E *:g4"
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| − | /><br/>
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| − | The only winning move for blue is the forcing move on d6. If blue misses it the game proceeds as follows:
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| − | <hexboard size="9x9"
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| − | coords="show"
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| − | contents="R :h4 B :d4 R :e5 B :g6 R :c6 B 1:g4 R 2:g5 B 3:f5 R 4:f6 B 5:e6 R 6:d8 B 7:e7 R 8:e9"
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| − | /><br/>
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| − | | + | |
| − | If d6 is played then blue win.
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| − | | + | |
| − | <hexboard size="9x9"
| + | |
| − | coords="show"
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| − | contents="R :h4 B :d4 R :e5 B :g6 R :c6 B 1:d6 R 2:d5 B 3:g4"
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| − | /><br/>
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Revision as of 15:57, 22 February 2017
A move is forcing when opponent has to answer locally to hold their advantage in the key area of the board.
A move can be mistakenly taken for a forcing one if it steals advantage in an area, but this area lost it's importance so that opponent benefits more from tenuki.
