Difference between revisions of "Y puzzle solutions"

Revision as of 21:51, 20 June 2026

If Red plays e2 too early on move 3, it is losing. If Red 5. b2, then Blue 6. d2. If Red 5. d2, then Blue 6. b3.

If Blue plays 2. c3 instead, Red's unique winning reply is 3. b2!

The winning move is (a). The strongest reply is (b), after which Blue has to play (c) or (d). With correct play, all the nodes will become occupied.

Back to the game of Y: Y

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+==Standard Y puzzles==
+===Puzzle 1===
+<hexboard size="4x4"
+  edges="hide"
+  visible="area(a1,a4,d1)"
+  contents="R a1 B b1 R 1:a3"
+  />
+===Puzzle 2===
+<hexboard size="5x5"
+  edges="hide"
+  visible="area(a1,a5,e1)"
+  contents="R b1 c3 B d2 1:b2"
+  />
+===Puzzle 3===
+<hexboard size="6x6"
+  edges="hide"
+  visible="area(a1,a6,f1)"
+  contents="R a2 c1 B b4 1:c2 R 2:d1 B 3:b2 R 4:b1 B 5:e2"
+  />
+If Red plays e2 too early on move 3, it is losing. If Red 5. b2, then Blue 6. d2. If Red 5. d2, then Blue 6. b3.
+<hexboard size="6x6"
+  edges="hide"
+  visible="area(a1,a6,f1)"
+  contents="R a2 c1 B b4 1:c2 R 2:d1 B 3:e2 R 4:c3"
+  />
+If Blue plays 2. c3 instead, Red's unique winning reply is 3. b2!
+<hexboard size="6x6"
+  edges="hide"
+  visible="area(a1,a6,f1)"
+  contents="R a2 c1 B b4 1:c2 R 2:c3 B 3:b2"
+  />
+==Bent-27 Y puzzle==
 [[Image:Y27puz_sol.gif]]