trapped queen

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abulmo2
Posts: 433
Joined: Fri Dec 16, 2016 11:04 am
Location: France
Full name: Richard Delorme

trapped queen

Post by abulmo2 »

During this game
[pgn]
[Event "ICS rated blitz match"]
[Site "winboard.nl"]
[Date "2018.03.17"]
[Round "-"]
[White "Marvin"]
[Black "Amoeba"]
[Result "0-1"]
[WhiteElo "1901"]
[BlackElo "1928"]
[TimeControl "300+1"]
[Annotator "8... +0,00"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8.
O-O b4 {+0,00/22 13} 9. Nce2 Nxe4 {+0,27/22 16} 10. a3 bxa3 {+0,72/23 15}
11. Nf4 d5 {+0,65/19 15} 12. Ba4+ Bd7 {-0,23/26 14} 13. Ndxe6 fxe6
{-0,22/26 2,5} 14. Nxe6 Qa5 {-0,50/24 14} 15. Qh5+ Ke7 {-0,58/25 6} 16.
Bxd7 Nxd7 {-0,33/25 6} 17. Rxa3 Ndf6 {-0,44/26 0,9} 18. Qe5 Qb6
{-0,47/28 4} 19. Nc7+ Kf7 {-0,46/31 11} 20. Nxa8 Qc6 {-0,53/32 4} 21. Qb8
Bxa3 {+0,80/27 12} 22. Qxh8 Bf8 {+0,77/27 11} 23. b3 h6 {+0,99/28 5} 24.
Be3 Qxa8 {+1,66/24 3} 25. Rc1 Qb8 {+2,47/26 5} 26. f3 Nc3 {+2,88/25 2,5}
27. Re1 Qc8 {+3,18/26 10} 28. Kh1 Qf5 {+3,48/27 5} 29. h3 Qxc2 {+5,72/23 3}
30. b4 Ne2 {+7,77/25 6} 31. Bc5 Bxc5 {+11,65/30 4} 32. bxc5 Nf4
{+13,85/29 2,2} 33. Rg1 Ne8 {+14,35/29 4} 34. c6 Ng6 {+15,45/27 4} 35. Qh7
Nf6 {+16,65/27 4} 36. Qxg6+ Kxg6 {+18,01/25 2,7} 37. c7 d4 {+21,42/27 2,6}
38. h4 Qxc7 {+25,37/29 2,0} 39. g4 Qc6 {+31,77/25 4} 40. Kg2 d3
{+98,97/19 4} 41. Ra1 d2 {+99,55/15 2,4} 42. Kf2 Qc1 {+99,61/16 3} 43. Rb1
Qxb1 {+99,89/15 0,3} 44. Kg3 Qe1+ {+99,91/13} 45. Kh3 d1=Q {+99,93/11} 46.
h5+ Kf7 {+99,95/9} 47. Kg2 Qh1+ {+99,97/7} 48. Kf2 Qdxf3# {+99,99/5}
{Marvin checkmated} 0-1
[/pgn]

Marvin, as white, reached this position
[d]NQ5r/5kpp/p1q2n2/3p4/4n3/b7/1PP2PPP/2B2RK1 w - - 0 22
and captured the black rook, falling into a trap, with the queen immobilized. After a few moves:
[d]q4b1Q/5kp1/p4n1p/3p4/4n3/1P2B3/2P2PPP/2R3K1 b - - 1 25
Amoeba as black virtually got a queen + knight vs a rook + bishop and could then easily won the game.
Richard Delorme