Puzzle of the week #346

Submitted by Eugen on Sun, 04/29/2018 - 13:36
Philidor defence
Level
2-Knight
Chess Diagram
[Event "Puzzle #346"][Date "2018.04.29"][Result "?-?"]1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Ng5 Nh6 6.a4 Be7
The game has just started and it seems black has defended in time against white's aggressive idea from Fried Liver. White must decide what to do with Ng5 under attack. A possible retreat 7. Ng5-f3 is followed by castle on both sides and an equal game. Your tasks:
a) What is the name of the opening?
b) Analyse the position carefully and find out the best play for white

Total available points for this puzzle is 15. The answers will be published next time together with puzzle #347.

Puzzle #345 solution:
Game Kirby J - Simpson John, Mission City USA, 1993. This week's best answers are by the top scorers. Eric gets an extra point for finding out the complete answer to the first question:
a) The game started as Bishop's opening and continued as Urusov gambit (Eric)
The answers to (b) and (c) are part of the diagram below
[Event "Puzzle #345"][Date "2018.04.22"][Result "1-0"]1. e4 e5 2. Bc4 Nf6 3. d4 Nxe4 4. dxe5 Nxf2 5. Qd5 Qh4 6. Qxf7+ Kd8 7. Nf3 Qe4+ 8. Kxf2 Bc5+ 9. Kf1 Nc6 10. Nc3 Qxc2 11. Bg5+ Ne7 12. Nd4 Qxb2 13. Rd1 d5 {The solution for (c) is} (13... Qxc3 {The solution for (b) is} 14. Ne6#) 14. exd6 {Game continuation} (14. Qxd5+ Bd6 15. Bxe7+ Kxe7 16. exd6+ cxd6 17. Nc6+ bxc6 18. Qxd6+ Ke8 19. Qd8#) (14. Bxe7+ \$2 Bxe7 15. Qxd5+ Bd7 16. Ne6+ Kc8 17. Qxd7+ Kb8) 14... Bxd6 \$2 15. Bxe7+ Bxe7 16. Ne6#

Correct solutions:
Eric - 16 points (1 extra)
Coby, Aiden, Joey - 15 points
Lyvia, Zhengyu, Matthew - 13 points
Walter - 11 points
Mengbai, Brian, Itamar - 7 points
Lucas - 4 points
Jacey, Steven - 3 points
Blake - 2 points

Standings:
Joey - 62 points
Matthew, Eric - 61 points
Lyvia - 60 points
Coby - 54 points
Aiden - 51 points
Walter, Zhengyu - 47 points
Mengbai - 33 points
Glyn - 29 points
Blake - 26 points
Lucas, Brian - 25 points
Jacey - 11 points
Itamar - 10 points
Steven - 8 points
Chris - 2 points