Difference between revisions of "Forcing moves"
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contents="R :h4 B :d4 R :e5 B :g6 R :c6 E *:d6 E *:g4" | contents="R :h4 B :d4 R :e5 B :g6 R :c6 E *:d6 E *:g4" | ||
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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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| + | 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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| + | If d6 is played then blue win. | ||
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| + | contents="R :h4 B :d4 R :e5 B :g6 R :c6 B 1:d6 R 2:d5 B 3:g4 R 4:g5 B 5:f6 R 6:e6" | ||
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Revision as of 15:27, 22 February 2017
A forcing move is a move to which opponent has to answer locally to defend against an immediate threat.
Example
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.
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.
The point
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:
The only winning move for blue is the forcing move on d6. If blue misses it the game proceeds as follows:
If d6 is played then blue win.
