25 Feb '07 21:44>2 edits
As I have promised, here is annotation of my thematic Kings gambit game with cmsMaster.
cmsMaster - Korch
RHP game
1.e4 e5 2.f4 Bc5
Not pretending to refute this gambit, but getting comfortable position.
2…exf4 or 2…d5 are the most principal responses against Kings gambit, but personally I like 2…Bc5 more. In my opinion this move is strongly underrated.
3.Nf3 d6 4.Nc3
Another possible (and sharper) line is 4.c3
4….Nf6!
After 4…Nc6 white could get better play with 5.Bb5!
5.Bc4 Nc6 6.d3 Bg4
One of the many possible black moves in this position, which I think the best for black. Other solid response is 6…a6 which avoids exchange of black squared bishop which is possible after 7.Na4, but in my opinion strength of this bishop in these lines is strongly overrated..
7.Na4
Old move 7.h3 is playable too, but after 7…Bxf3 8.Qxf3 exf4 9.Bxf4 Ne5 black is forcing exchange one of the white bishops and getting at least equal play.
7…Bb6
Alekhine thought this move as best for black and I can completely agree with him.
8.Nxb6 axb6 9.0-0 0-0 10.c3 exf4
The same plan as if white would play 7.h3. In this position this plan is working well too.
11.Bxf4 Ne5 12.Bxe5
If 12.Bb3 then 12…Nxf3+ 13.gxf3 Be6 with good position. For example on 14.Bc2 black can play 14…Nh5! with idea of Qh4. After 14.Bg5? h6 15.Bh4 (15.Bxf6 Qxf6 also gives black better play) black will get advantage after paradox 15….Ra5! (a-file!)
12…dxe5 13.Qe1
After 13.h3 Bxf3 14.Qxf3 black can play 14…Qd6 with equal position.
13…Qd6
On 14.Qg3 planning 14…b5 15.Bb3 (15.Bxb5?? Qc5+) Qxd3 16.Qxe5 (16.Nxe5? Qxg3 17.hxg3 Be6 with large (maybe decisive) advantage in endgame) and black can choose between draw after 16….Qe3+ 17.Kh1 Nxe4 18.Rae1 Nf2+ or play for win with 16…c6 after which Rybka rates this complicated position as about equal, but in my opinion white need play to play more accurate. Other possibility is 14.a4.
14.d4?
This pseydoactive move is beginning of all problems of white.
14….Bxf3 15.Rxf3 exd4! 16.e5
According to Rybka other alternative was 16.Rd1 (which I did not see during the game expecting only 16.e5), but after 16…b5! Black is better. For example 17.e5 Qb6 18.exf6 dxc4 19.cxd4 (19.Rxd4 Rfe8 with advantage) Qxb2! 20.Rf2 (20.Qg3 g6 21.Rf2 [21.Qh4? Rxa2! -+] Qb6 22.Qh4 Kh8 23.Qh6 [23.Rf3 Ra5!] Rg8 with following g5! offbeating attack and keeping extra pawn ) Qb6 21.fxg7 Kxg7! and white have no enough compensation for their pawn.
16…Qc5 17.Qf2?
Another mistake, which leads to rook endgame with extra pawn for black.
Better was 17.exf6 but anyway – after 17…dxc3+ 18.Kh1 (not 18.Qf2 cxb2! -+)
Qxc4 19.Rxc3 (Not 19.fxg7 which leads to lost endgame after 19…Rfe8 20.Qxc3 Qxc3 and Rxa2!) Qf4 20.fxg7 Rfe8 with advantage for black who will capture g7 in future and will have extra pawn then.
17….Ng4! 18.Qxd4 Nxe5 19.Rf4 Qxd4+ 20.Rxd4 c5!
Taking in control d4
21.Re4 Nxc4 22.Rxc4 Rfd8
According to Rybka 22….Rfe8 is not bad too, but I planned to put my rook in 2nd horizontal, which wouldn’t be possible after 22….Rfe8 23.Kf1.
23.Re4 Rd2 24.Re7 Rxb2 25.Rd1
After 25.Rxb7 g6 26.a4 (otherwise black will take on a2) Re8 (with doubling rooks on 2nd horizontal in next move) black is wins easily.
25…g6 26.Rdd7?
Making my task simpler. After 26.Rf1 Raxa2 27.Rfxf7 Ra1+ (27….Rxg2+ 28.Kh1 Rxa2+ 29.Kg1 Rag2+ 30.Kf1 and black have problems to realize their advantage) 28.Rf1 Rxf1+ 29.Kxf1 b5 30.Rxb7 b4 31.cxb4 cxb4 black should win, but it won`t be so easy as in game.
26….Rxb1+ 27.Kf2 Rxa2+ 28.Kg3
If 28.Kf3 then28... Rf1+
28….Rg1 29.Rxf7??
Last mistake but white is losing anyway. For example 29.Rxb7 Raxg2+ 30.Kh3 (30.Kf3 Rxh2) Rc2 and white cant take on f7 due mate - 31.Rxf7+ Rxc3+ 32.Kh4 g5+ 33.Kh5 Rh3#
29…..Rgxg2+ White resigned
After 30.Kh3 ( 30.Kf3 Rgf2+) Rxh2+ 31.Kg3 Rag2+ 32.Kf3 Rf2+ 33.Kg2 Rxf7 there would be elementary winning endgame for black.
cmsMaster - Korch
RHP game
1.e4 e5 2.f4 Bc5
Not pretending to refute this gambit, but getting comfortable position.
2…exf4 or 2…d5 are the most principal responses against Kings gambit, but personally I like 2…Bc5 more. In my opinion this move is strongly underrated.
3.Nf3 d6 4.Nc3
Another possible (and sharper) line is 4.c3
4….Nf6!
After 4…Nc6 white could get better play with 5.Bb5!
5.Bc4 Nc6 6.d3 Bg4
One of the many possible black moves in this position, which I think the best for black. Other solid response is 6…a6 which avoids exchange of black squared bishop which is possible after 7.Na4, but in my opinion strength of this bishop in these lines is strongly overrated..
7.Na4
Old move 7.h3 is playable too, but after 7…Bxf3 8.Qxf3 exf4 9.Bxf4 Ne5 black is forcing exchange one of the white bishops and getting at least equal play.
7…Bb6
Alekhine thought this move as best for black and I can completely agree with him.
8.Nxb6 axb6 9.0-0 0-0 10.c3 exf4
The same plan as if white would play 7.h3. In this position this plan is working well too.
11.Bxf4 Ne5 12.Bxe5
If 12.Bb3 then 12…Nxf3+ 13.gxf3 Be6 with good position. For example on 14.Bc2 black can play 14…Nh5! with idea of Qh4. After 14.Bg5? h6 15.Bh4 (15.Bxf6 Qxf6 also gives black better play) black will get advantage after paradox 15….Ra5! (a-file!)
12…dxe5 13.Qe1
After 13.h3 Bxf3 14.Qxf3 black can play 14…Qd6 with equal position.
13…Qd6
On 14.Qg3 planning 14…b5 15.Bb3 (15.Bxb5?? Qc5+) Qxd3 16.Qxe5 (16.Nxe5? Qxg3 17.hxg3 Be6 with large (maybe decisive) advantage in endgame) and black can choose between draw after 16….Qe3+ 17.Kh1 Nxe4 18.Rae1 Nf2+ or play for win with 16…c6 after which Rybka rates this complicated position as about equal, but in my opinion white need play to play more accurate. Other possibility is 14.a4.
14.d4?
This pseydoactive move is beginning of all problems of white.
14….Bxf3 15.Rxf3 exd4! 16.e5
According to Rybka other alternative was 16.Rd1 (which I did not see during the game expecting only 16.e5), but after 16…b5! Black is better. For example 17.e5 Qb6 18.exf6 dxc4 19.cxd4 (19.Rxd4 Rfe8 with advantage) Qxb2! 20.Rf2 (20.Qg3 g6 21.Rf2 [21.Qh4? Rxa2! -+] Qb6 22.Qh4 Kh8 23.Qh6 [23.Rf3 Ra5!] Rg8 with following g5! offbeating attack and keeping extra pawn ) Qb6 21.fxg7 Kxg7! and white have no enough compensation for their pawn.
16…Qc5 17.Qf2?
Another mistake, which leads to rook endgame with extra pawn for black.
Better was 17.exf6 but anyway – after 17…dxc3+ 18.Kh1 (not 18.Qf2 cxb2! -+)
Qxc4 19.Rxc3 (Not 19.fxg7 which leads to lost endgame after 19…Rfe8 20.Qxc3 Qxc3 and Rxa2!) Qf4 20.fxg7 Rfe8 with advantage for black who will capture g7 in future and will have extra pawn then.
17….Ng4! 18.Qxd4 Nxe5 19.Rf4 Qxd4+ 20.Rxd4 c5!
Taking in control d4
21.Re4 Nxc4 22.Rxc4 Rfd8
According to Rybka 22….Rfe8 is not bad too, but I planned to put my rook in 2nd horizontal, which wouldn’t be possible after 22….Rfe8 23.Kf1.
23.Re4 Rd2 24.Re7 Rxb2 25.Rd1
After 25.Rxb7 g6 26.a4 (otherwise black will take on a2) Re8 (with doubling rooks on 2nd horizontal in next move) black is wins easily.
25…g6 26.Rdd7?
Making my task simpler. After 26.Rf1 Raxa2 27.Rfxf7 Ra1+ (27….Rxg2+ 28.Kh1 Rxa2+ 29.Kg1 Rag2+ 30.Kf1 and black have problems to realize their advantage) 28.Rf1 Rxf1+ 29.Kxf1 b5 30.Rxb7 b4 31.cxb4 cxb4 black should win, but it won`t be so easy as in game.
26….Rxb1+ 27.Kf2 Rxa2+ 28.Kg3
If 28.Kf3 then28... Rf1+
28….Rg1 29.Rxf7??
Last mistake but white is losing anyway. For example 29.Rxb7 Raxg2+ 30.Kh3 (30.Kf3 Rxh2) Rc2 and white cant take on f7 due mate - 31.Rxf7+ Rxc3+ 32.Kh4 g5+ 33.Kh5 Rh3#
29…..Rgxg2+ White resigned
After 30.Kh3 ( 30.Kf3 Rgf2+) Rxh2+ 31.Kg3 Rag2+ 32.Kf3 Rf2+ 33.Kg2 Rxf7 there would be elementary winning endgame for black.