Difference between revisions of "Solutions to puzzles"
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(→Bert Enderton: posted a solution to Enderton puzzle 1) |
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== Bert Enderton == | == Bert Enderton == | ||
=== Puzzle 1 === | === Puzzle 1 === | ||
| − | + | ||
| + | The unique winning first move is Red b4. | ||
| + | (Blue can easily defend the bridges at e3/e4 and g2/g3. Red d3 is defeated by blue b5, red b5 is defeated by blue d3, and all other red moves are defeated by blue b4). | ||
| + | |||
| + | <hex>R7 C7 Q1 | ||
| + | Sd1 | ||
| + | Sb3 Hc3 Sd3 Hf3 | ||
| + | V1b4 Vc4 Hd4 | ||
| + | Hc5 Ve5 | ||
| + | Va6</hex> | ||
| + | |||
| + | Notice that the red stone at a6 is already connected south via the ladder escape at e5. Also, red threatens to connect north via a double threat at b3 and d3; each of these would connect to the northern edge via [[Template IIIa]]. The two templates overlap at d1, but blue d1 is defeated via the following sequence of forcing moves: | ||
| + | |||
| + | <hex>R7 C7 Q1 | ||
| + | H2d1 | ||
| + | H4b2 V7c2 V5e2 | ||
| + | V3b3 Hc3 H6d3 Hf3 | ||
| + | V1b4 Vc4 Hd4 | ||
| + | Hc5 Ve5 | ||
| + | Va6</hex> | ||
| + | |||
=== Puzzle 2 === | === Puzzle 2 === | ||
Not posted yet... | Not posted yet... | ||
Revision as of 23:51, 29 February 2020
Contents
Piet Hein
See Solutions to Piet Hein's puzzles
Claude Berge
See Solutions to Claude Berge's puzzles
Bert Enderton
Puzzle 1
The unique winning first move is Red b4. (Blue can easily defend the bridges at e3/e4 and g2/g3. Red d3 is defeated by blue b5, red b5 is defeated by blue d3, and all other red moves are defeated by blue b4).
Notice that the red stone at a6 is already connected south via the ladder escape at e5. Also, red threatens to connect north via a double threat at b3 and d3; each of these would connect to the northern edge via Template IIIa. The two templates overlap at d1, but blue d1 is defeated via the following sequence of forcing moves:
Puzzle 2
Not posted yet...
Puzzle 3
The unique winning first move is Red c3! (e2 is defeated by e3, d3 is defeated by e1, e3 is defeated by e2, and b4 is defeated by d3).
The following seem like horizontal's (Blue's) best tries from the above position.
| 1. d2 | e2 | 2. d5 | c5 | 3. d4 | b3 | 4. c4 | a5 | ||||
| 1. d3 | b3 | 2. b5 | e3 | ||||||||
| 1. e1 | d2 | 2. d1 | d1 | 3. c4 | b3 | 4. e3 | a5 | or | 4. b5 | e3 | |
| ........ | .... | 2. c4 | b3 | 3. c5 | e3 | 4. e4 | f3 | 5. e6 | d5 | ||
| 1. d5 | b3 | 2. d2 | b2 | 3. c4 | a5 | 4. a6 | c5 | 5. b5 | e3 | 6. d5 | f5 |
| ........ | .... | ........ | .... | 3. b5 | c5 | 4. c4 | e3 | ||||
| ........ | .... | ........ | .... | 3. b6 | a6 | 4. b4 | c5 | 5. c4 | e3 | 6. e6 | d4 |
| 1. c4 | e3 | 2. e2 | b3 | 3. d3 | a5 | ||||||
| 1. b5 | d4 | 2. d3 | f2 | 3. f1 | d2 | 4. c4 | e2 | 5. e4 | e3 | 6. c5 | e5 |
| ........ | .... | 2. e1 | d2 | 3. d1 | f1 | 4. e2 | f2... | ||||
| 1. b4 | d2 | 2. d5 | c5 | 3. c4 | e3 | 4. d4 | e5 |
Other authors
Puzzle 1
Not posted yet...
Puzzle 2
Not posted yet...
Puzzle 5
part 1:
part 2:
part 3:
