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Why would black play a stupid move like g5?

Rook in g1.

2 . ... g5 is actually the toughest move.

  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+

Rg4 g4
Ng4

Please, whole move order:

  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+
  4. Nxg4 Bg6
  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+
  4. Nxg4 Bg6
  5. Nh6+ Kh7
  6. Nxf7 Rxf7
  7. Rxg6+ Kh7
  8. Rh6+ Kg8
  9. Qh8+ mate
  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+
  4. Nxg4 Bg6
  5. Nh6+ Kh7
  6. Nxf7 Bf5+
  7. Kh2 Rxf7 and black wins.
  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+
  4. Rg4 g4
  5. Ng4

Black king can't move and is one move away from mate Nh6+

g5 is dumb and didn't even consider it....

  1. a7 Qc8
  2. e5 g5
  3. Rg1 g4+
  4. Rxg4 hxg4+
  5. Nxg4 Bf5

Now the knight is pinned and cannot move.

It's late, I'm tired. I'll figure it out tommorrow.

  1. Qxg5+, Bg6
  2. Ne4, Kg7
  3. Nf6, c4
  4. Rg1

With threats to follow like Qxh5 or sneaking in with Qh6.

After Nf6 black can play Rh8 ... Check the complete solution above ...

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