Difference between revisions of "Swap"

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m (consistent with "small boards"?)
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====Size 10====
 
====Size 10====
<hex>R10 C10 Va1 Vb1 Vc1 Vd1 Ve1 Vf1 Vg1 Vh1 Vi1 Hj1
+
<hex>R10 C10 Ha1 Hb1 Hc1 Hd1 He1 Hf1 Hg1 Hh1 Hi1 Vj1
               Sa2 Sb2 Sc2 Hd2 He2 Hf2 Hg2 Hh2 Hi2 Hj2
+
               Sa2 Sb2 Sc2 Vd2 Ve2 Vf2 Vg2 Vh2 Vi2 Vj2
               Sa3 Hb3 Hc3 Hd3 He3 Hf3 Hg3 Hh3 Hi3 Hj3
+
               Sa3 Vb3 Vc3 Vd3 Ve3 Vf3 Vg3 Vh3 Vi3 Vj3
                 Ha4 Hb4 Hc4 Hd4 He4 Hf4 Hg4 Hh4 Hi4 Hj4
+
                 Va4 Vb4 Vc4 Vd4 Ve4 Vf4 Vg4 Vh4 Vi4 Vj4
                 Ha5 Hb5 Hc5 Hd5 He5 Hf5 Hg5 Hh5 Hi5 Hj5
+
                 Va5 Vb5 Vc5 Vd5 Ve5 Vf5 Vg5 Vh5 Vi5 Vj5
                   Ha6 Hb6 Hc6 Hd6 He6 Hf6 Hg6 Hh6 Hi6 Hj6
+
                   Va6 Vb6 Vc6 Vd6 Ve6 Vf6 Vg6 Vh6 Vi6 Vj6
                   Ha7 Hb7 Hc7 Hd7 He7 Hf7 Hg7 Hh7 Hi7 Hj7
+
                   Va7 Vb7 Vc7 Vd7 Ve7 Vf7 Vg7 Vh7 Vi7 Vj7
                     Ha8 Hb8 Hc8 Hd8 He8 Hf8 Hg8 Hh8 Hi8 Sj8
+
                     Va8 Vb8 Vc8 Vd8 Ve8 Vf8 Vg8 Vh8 Vi8 Sj8
                     Ha9 Hb9 Hc9 Hd9 He9 Hf9 Hg9 Sh9 Si9 Sj9
+
                     Va9 Vb9 Vc9 Vd9 Ve9 Vf9 Vg9 Sh9 Si9 Sj9
                       Ha10 Vb10 Vc10 Vd10 Ve10 Vf10 Vg10 Vh10 Vi10 Vj10 </hex>
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                       Va10 Hb10 Hc10 Hd10 He10 Hf10 Hg10 Hh10 Hi10 Hj10 </hex>
  
 
==== Size 14 ====
 
==== Size 14 ====

Revision as of 20:17, 22 December 2009

The rule

After Red played the first move Blue player is asked wether she wants to swap or not, that is to invert the colors or to keep on this way. Detailled article.

Where to swap

The use of the swap rule is to force the first player to play not too good moves. Therefore it is intersting to find out what are the moves that should be swapped (the best moves), what are moves that should not be swapped (the worse moves), what are the moves for which no answer is known yet.

On every size a1, b1 and symmetrical moves are known losing moves (except 2 x 2, where b1 wins, see small boards).

  • The red marked hexes are not to be swapped.
  • The blue marked hexes are to be swapped.
  • The star marked hexes are average moves, so the game should be balanced with or without swap.

Hex is not strongly solved on big sizes, therefor the result of optimal play is not known for every cells.

Small Sizes

See Small boards to know which cells lead to victory with optimal play. You might however assume that you and your opponent do not play optimally, and decide to play tricky losing moves in order to trap you r opponent !

Bigger Sizes

Theoritical outcome is known for a few cells (for instance a1). For the other cells, stronger players advice can give a hint on wether a move should be swapped or not. One could also try to recognize a pattern in the winning cells for small boards and extrapolate to bigger sizes.

Size 10

Size 14

TODO

Size 19

TODO

See also

Guideline for the 10x10, in the basic strategy guide.

External links

A faq about Hex

A more complete site with solution to sizes 7. Beware, the colors are inverted, vertical is blue there.