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Alexander McDonnell vs Louis Charles Mahe De La Bourdonnais
London m 35 (1834), London ENG, rd 35
King's Gambit: Accepted. MacDonnell Gambit (C37)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
May-16-04  SamusAran: I'm suprised this game lasted so long without a checkmate
Oct-10-04
Premium Chessgames Member
  Chessical: An alternative try for De Labourdonnais was to tuck his K into the corner rather than expose it to peril on d7: <41...Ka7> 42.h6 Rh8 43.Re6 Rh7 44.Kg2. In this variation he has a more active position by preserving his B, and his R is more flexibly placed.
Jan-15-05  sleepkid: featuring some of the worst endgame play I've ever seen. lol.
Oct-03-07  nimh: Rybka 2.4 mp, AMD X2 2.01GHz, 10 min per move, threshold 0.25.

McDonnell 17 mistakes:
8.c3 0.00 (8.d3 1.85)
18.b5 2.44 (18.Rf2 3.49)
22.Nc7 2.07 (22.Rf2 3.23)
24.Bxf4 0.43 (24.a4 2.74)
28.Kh1 0.09 (28.g3 1.03)
31.Rd1 -0.09 (31.Re2 0.19)
48.Kg2 1.25 (48.Rd7 2.37)
50.h4 1.87 (50.Rc1+ 3.42)
56.Rd3 1.59 (56.h5 5.42)
64.Kh5 5.91 (64.Rh3 8.23)
71.Kb1 3.92 (71.Kc3 5.92)
75.a3+ 3.89 (75.Rh4+ 9.80)
78.Kb2 0.00 (78.Kd3 317.67)
79.Rb4+ 0.58 (79.Kc2 14.95)
81.Rg7 4.97 (81.Rf7 6.84)
92.a4 0.62 (92.Ra7 15.09)
95.Rc1 15.65 (95.Rg7 33.63)

De La Bourdonnais 23 mistakes:
7...Qe5 1.85 (7...Qd6 1.00)
8...Bh6 2.90 (8...Kd8 0.00)
13...Ne7 3.63 (13...b6 2.78)
14...Rg8 3.91 (14...b6 2.94)
18...d6 4.04 (18...b6 2.44)
22...Bg4 2.76 (22...Ne5 2.07)
27...e5 1.03 (27...Bd6 0.41)
41...Kc7 1.11 (41...Ka7 0.07)
47...Kc5 2.37 (47...Ke5 1.40)
48...Nd8 3.62 (48...Ne5 1.25)
54...a5 3.26 (54...Rh8 1.91)
55...a4 5.42 (55...Rg7+ 3.19)
56...Rb7 5.42 (56...Rg7+ 1.59)
60...Rh1 8.27 (60...Rf1 5.44)
73...Kc4 9.74 (73...Kd4 3.89)
76...Kb5 14.53 (76...Kd3 3.09)
77...Rc8+ 317.67 (77...Kc5 14.33)
79...Ka5 5.67 (79...Kc6 0.58)
81...Ka5 14.84 (81...Kb6 4.97)
92...Rc8 15.65 (92...Re8 0.62)
93...Rb8 33.39 (93...Kc6 13.60)
95...Ra8+ 317.67 (95...Rh8 15.65)
98...Rh8 278.67 (98...Rf8 21.50)

Oct-11-07  nimh: Correction, new threshold 0.33.

McDonnell 16 mistakes:
8.c3 0.00 (8.d3 1.85)
18.b5 2.44 (18.Rf2 3.49)
22.Nc7 2.07 (22.Rf2 3.23)
24.Bxf4 0.43 (24.a4 2.74)
28.Kh1 0.09 (28.g3 1.03)
48.Kg2 1.25 (48.Rd7 2.37)
50.h4 1.87 (50.Rc1+ 3.42)
56.Rd3 1.59 (56.h5 5.42)
64.Kh5 5.91 (64.Rh3 8.23)
71.Kb1 3.92 (71.Kc3 5.92)
75.a3+ 3.89 (75.Rh4+ 9.80)
78.Kb2 0.00 (78.Kd3 317.67)
79.Rb4+ 0.58 (79.Kc2 14.95)
81.Rg7 4.97 (81.Rf7 6.84)
92.a4 0.62 (92.Ra7 15.09)
95.Rc1 15.65 (95.Rg7 33.63)

De La Bourdonnais 23 mistakes:
7...Qe5 1.85 (7...Qd6 1.00)
8...Bh6 2.90 (8...Kd8 0.00)
13...Ne7 3.63 (13...b6 2.78)
14...Rg8 3.91 (14...b6 2.94)
18...d6 4.04 (18...b6 2.44)
22...Bg4 2.76 (22...Ne5 2.07)
27...e5 1.03 (27...Bd6 0.41)
41...Kc7 1.11 (41...Ka7 0.07)
47...Kc5 2.37 (47...Ke5 1.40)
48...Nd8 3.62 (48...Ne5 1.25)
54...a5 3.26 (54...Rh8 1.91)
55...a4 5.42 (55...Rg7+ 3.19)
56...Rb7 5.42 (56...Rg7+ 1.59)
60...Rh1 8.27 (60...Rf1 5.44)
73...Kc4 9.74 (73...Kd4 3.89)
76...Kb5 14.53 (76...Kd3 3.09)
77...Rc8+ 317.67 (77...Kc5 14.33)
79...Ka5 5.67 (79...Kc6 0.58)
81...Ka5 14.84 (81...Kb6 4.97)
92...Rc8 15.65 (92...Re8 0.62)
93...Rb8 33.39 (93...Kc6 13.60)
95...Ra8+ 317.67 (95...Rh8 15.65)
98...Rh8 278.67 (98...Rf8 21.50)

Feb-26-08  wolfmaster: Embarrassing!
Apr-30-08  Judah: 92.a4 was a blunder. Up until that point, McDonnell had a fairly straightforward win. All he needed to do was to free up his Rook by playing Ka4, to eliminate the mating threat. (It doesn't help for Black to try to keep up the pressure with 92...Kc4--93.Rc6 forces the Black King away with tempo.) Then his Rook is free to return to h6 and the win is in sight.

Instead, the premature a4, by cutting off the King's flight square, hands Black the draw. All Black needs to do is shuffle his Rook--White has no useful moves: One pawn cannot advance without dying. The other pawn cannot advance at all. The King cannot move either. If the Rook moves from the a-file, ...Ra8+ forces it right back where it came from. This leaves Ra7 as the only remaining possibility, but that doesn't work either. Black continues to shuffle his Rook, the White King and pawns still have nowhere to go, and the Rook is still pinned to the a-file by the mating threat. If the King moves up to a6, Black follows with Kc6, maintaining the mating threat, and there is nothing White can do.

Apr-30-08  Judah: There was only one thing Black needed to be careful of: Rc7+ (as in the game), forcing Black's King away with tempo, and freeing White from the mating threat. Black cannot allow this. The response to 93.Ra7 needs to be ...Rc8, preventing Rc7+. This, of course, means that Black's 92nd move needed to be anything but Rc8: Rd8, Re8, Rf8, or Rh8. By playing Rc8, La Bourdonnais put himself into zugzwang (after 93.Ra7) and handed the game back to McDonnell.
May-01-08  David2008: Interesting ending. Could McDonald have saved himself a lot of trouble with 68 h8Q. E.g. ...Rxh8, 69. Rxh8, Kxa2 70 Ke3, Kb2 71 Kd2, a3 72 Rb8+, Ka1 73 Kc2, a2 74 Kb3, Kb1 75 Rh8 etc. Or have I missed something?
May-01-08  Judah: It seems that you're right. Maybe he didn't even bother to count.
May-23-09  WhiteRook48: over already?
Feb-03-12  Knight13: Another improvement would be 20. Rf2. White's game becomes much more fluid after this move.

<wolfmaster: Embarrassing!> You must be referring to 24. Bxf4?? For someone who relies heavily on tactics to win his games, 24. Bxf4?? is most certainly embarassing.

Sep-28-17  WorstPlayerEver: After 52... Rxh7 the position is won for White.

Even when the h4 pawn is at h2 and the a6 pawn at a5 (77!):


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