WEBVTT 00:01.320 --> 00:01.980 Hi there. 00:02.130 --> 00:06.500 In this lecture, we see Anatoly Karpov playing against Johann Hodgson. 00:06.540 --> 00:08.040 This is in 1989. 00:08.040 --> 00:16.200 The candidates quarterfinal that they played round to C4 from Karpov we have E5, G3. 00:16.200 --> 00:20.920 So this English opening actually seems to fit Karpov style very well. 00:20.940 --> 00:25.770 He actually scores very well with the English opening, and the same with Michael Adams, but it's a 00:25.770 --> 00:31.740 smaller game sample than when they play E4 or E4, but both of them score well with the English opening. 00:31.770 --> 00:37.110 There is an element naturally, of control in this position to try and control the D5 square. 00:37.440 --> 00:44.730 We see nine of six Bishop G2, d5 C tanks DD 592 65. 00:44.760 --> 00:53.850 So here we have nine C Free Knight B six Knight every night C6 White Castle, Bishop E seven, A Free 00:53.880 --> 01:00.600 Bishop, e6b4 black consoles and now Rook B one. 01:00.600 --> 01:03.900 This is actually a safety move. 01:04.110 --> 01:15.480 If we played B5 immediately, the problem is Black could play 94 and this could get nasty. 01:15.480 --> 01:18.570 Black is actually threatening Bishop B free. 01:18.840 --> 01:21.660 So we can't really take on E5 because of Bishop be free. 01:21.660 --> 01:22.590 And then what happens? 01:22.590 --> 01:25.650 We move our Queen and then horrible things happen out. 01:25.650 --> 01:27.390 Like to Knight takes a one. 01:27.390 --> 01:28.920 So it's a precaution. 01:28.920 --> 01:34.050 It is a preventative move for a potential act of operation B five to play B one. 01:34.800 --> 01:41.940 And now we see F6 and in fact here B five isn't chosen D free. 01:43.350 --> 01:50.790 We see Queen de seven, Knights E 495 Queen C2. 01:51.540 --> 01:56.280 So that C five square is a useful outpost square like in the Sicilian. 01:56.280 --> 02:01.890 It's like Sicilian in reverse, where the semi-open C file dictates that this is actually quite a dangerous 02:01.890 --> 02:03.030 outpost square. 02:05.030 --> 02:09.620 And here we see B six, which weakens black on the light squares. 02:09.710 --> 02:11.450 Now, is that a theoretical concern? 02:11.450 --> 02:17.870 Black has already played Additionally, these these pawns, the dark squares, so black is potentially 02:17.870 --> 02:19.760 vulnerable online squares. 02:20.300 --> 02:25.370 The Guardian bishop, the e sex bishop will be interesting to take out somehow. 02:25.370 --> 02:30.260 Bishop B two AC eight rook BC one and now 94. 02:30.260 --> 02:36.170 Here we have Bishop takes RD for e tanks RD for now. 02:36.170 --> 02:36.530 Here. 02:36.530 --> 02:36.950 Yeah. 02:36.950 --> 02:38.660 It does seem as though black's gone wrong. 02:38.660 --> 02:42.350 Already in the opening, Karpov played a very strong move. 02:42.350 --> 02:47.120 Queen C six He could also just take on RD four because that is a sense pawn. 02:47.120 --> 02:51.680 There is no takes b4, but it's like losing a flank pawn for a sense pawn. 02:51.680 --> 02:58.040 This position with B five is actually significantly better for white in any case, but Karpov's approach 02:58.040 --> 02:58.910 is even stronger. 02:58.910 --> 03:08.000 Queen C six So we have here Queen C six, Rook takes six and black plays Bishop D seven expecting the 03:08.000 --> 03:13.880 rook to go back and then Black would be able to play, for example, C five to hold the default pawn. 03:14.690 --> 03:18.890 So in this position, this is a critical junction point of the game. 03:19.010 --> 03:20.000 Maybe. 03:20.180 --> 03:20.630 Yeah. 03:20.630 --> 03:24.260 So what would you play here for 100 points and why? 03:29.390 --> 03:29.700 Okay. 03:29.720 --> 03:30.740 Yeah, a positional test. 03:30.740 --> 03:31.790 It's a positional exchange. 03:31.790 --> 03:33.230 Sacrifice which is needed. 03:33.620 --> 03:41.390 If we played Rook C2, then Black gets the play, C5 protects D four and. 03:42.210 --> 03:46.020 This is going to be just even this kind of position is just even. 03:46.650 --> 03:49.350 So Karpov actually plays here. 03:50.010 --> 03:52.710 In this position, a positional exchange sacrifice. 03:52.980 --> 03:56.910 Takes the fall and it's very, very dangerous. 03:56.940 --> 03:57.180 Black. 03:57.180 --> 03:59.940 Black takes on C six, nine, eight, C six. 04:00.120 --> 04:04.800 Now, immediately, there are big concerns here. 04:05.580 --> 04:07.260 Very, very big concerns. 04:07.260 --> 04:14.280 So a seven is hence E seven is under pressure and this bishop is looking to hit the five. 04:14.280 --> 04:21.000 So black played rook ce8 if a six then here 92 And what does black do. 04:21.030 --> 04:26.220 This is nasty because the knights protecting the bishop, how do we protect the night after night moves 04:26.250 --> 04:27.720 nine takes e seven check. 04:27.840 --> 04:33.240 But if rook FDA offering the exchange back, we don't take the exchange back here. 04:33.270 --> 04:33.720 Guess what? 04:33.720 --> 04:36.300 We play here for five points. 04:36.840 --> 04:37.920 Yeah, we just play. 04:38.610 --> 04:42.210 Bishop takes the five check, and then here we're winning everything. 04:42.390 --> 04:43.260 Nearly everything. 04:43.260 --> 04:49.750 So Rook C eight was played, and now instead of taking on a seven, that gives a bit of play. 04:49.760 --> 04:50.700 Potentially. 04:51.060 --> 04:53.340 We have a very strong, powerful move. 04:54.270 --> 04:54.870 Roxy one. 04:54.870 --> 04:56.730 The frets here is actually 92. 04:56.910 --> 04:59.160 The rooks taken away the C free square. 04:59.670 --> 05:06.720 If we played 92 immediately to hit the knight on D five for this discovery attack, there is 90 C free. 05:06.720 --> 05:13.890 And we'd have to defend this pawn, let's say Bishop a free A six and Y has an advantage, but it's 05:13.890 --> 05:19.260 not as convincing as the game with Rook one there's a big idea of 92 now. 05:19.380 --> 05:20.280 Big threat. 05:20.280 --> 05:24.570 So Black compromised the position further with five we have 92. 05:25.020 --> 05:26.670 So the knight is under pressure. 05:26.670 --> 05:27.240 It moves. 05:27.240 --> 05:28.830 But now two pawns for the exchange. 05:28.830 --> 05:31.950 And the bishop has a clear view on the whole diagonal. 05:31.980 --> 05:33.150 Beautiful stuff. 05:33.150 --> 05:36.090 Great compensation for the exchange sacrifice. 05:36.090 --> 05:41.370 So Bishop DD six unveils an attack on the E two pawn that's just moved to E three. 05:41.640 --> 05:46.410 We have C five and now Knight C for hitting B, B six and D six. 05:46.680 --> 05:49.470 Bishop B ain't hitting a seven. 05:49.470 --> 05:53.550 Not giving time for Knight takes B six, but C six now. 05:54.360 --> 05:56.250 And black's really under pressure. 05:56.250 --> 06:04.840 We have b54 to 85c takes b486b4 97 and now D four. 06:04.860 --> 06:09.120 Look how harmonious the bishop is of the pawns. 06:09.210 --> 06:12.120 So the pawns on the other color, all of them on the other color. 06:12.120 --> 06:13.470 Look at the harmony here. 06:13.470 --> 06:14.190 Enjoy it. 06:14.460 --> 06:15.810 G five is played. 06:15.810 --> 06:19.800 We have Knight six B which breaks into that seven Frank that entry points. 06:19.980 --> 06:22.680 So we get juicy targets now across the seven. 06:22.680 --> 06:27.690 Frank 9f6 the seven Frank was raved around about by NIMZOWITSCH. 06:27.720 --> 06:31.830 It's not just the middle game element, it's also an end game element quite often to restrict kings 06:31.830 --> 06:33.600 or win pawns statistically. 06:34.080 --> 06:36.510 But in the middle game it's so dangerous for king safety. 06:36.510 --> 06:39.660 Quite often if Rook have seven here, what would we play? 06:39.960 --> 06:40.980 Five points? 06:42.150 --> 06:43.920 Yeah, we just play Bishop D five. 06:44.100 --> 06:45.690 So nine of six is played. 06:45.690 --> 06:49.920 We have nine, C six and now Rook six. 06:49.920 --> 06:53.940 Black has to tread carefully given that there's 97 in Roxy. 06:53.940 --> 06:57.000 Eight So Rook B six, there's 97. 06:57.000 --> 07:00.120 Shaq here winning another pawn. 07:00.270 --> 07:00.660 So. 07:00.660 --> 07:02.940 King Actually, yeah, Black's been dismantled. 07:02.940 --> 07:04.140 Don't take that five. 07:04.140 --> 07:09.540 We have Rook six rook c one preventing a check. 07:10.050 --> 07:17.640 Rook A two We have H three rook b2 And Karpov is not worried about losing this pawn. 07:17.640 --> 07:25.500 He's got these central connected past pawns here e4 he starts pushing them rook tanks b4 now g four 07:25.530 --> 07:31.110 that cements the knight on F five, which is holding d4h5 and now E five. 07:32.580 --> 07:34.650 And this is really, really bad. 07:34.650 --> 07:36.900 H takes G4 just giving up basically. 07:36.900 --> 07:39.270 But if knight g A This is hopeless. 07:39.270 --> 07:47.430 Bishop d5 let's say rook D eight, rook c five And then here we can just simplify that. 07:47.430 --> 07:48.960 Knight's kind of stranded by this knight. 07:48.960 --> 07:51.000 We can just take it off actually soon. 07:51.000 --> 07:54.270 But first get behind the opponent's passport is a principle. 07:54.270 --> 07:57.540 The Tarrasch rule Either get behind your past pawns or the opponents. 07:57.540 --> 08:01.920 And here we can just take on G eight and play D five. 08:01.920 --> 08:09.330 And our exchange sacrifice here is four absolutely wonderful, visually crushing compensation, visually 08:09.330 --> 08:10.080 crushing. 08:10.230 --> 08:13.830 These two past pawns are worth their weight in gold, as the expression goes. 08:13.830 --> 08:17.610 If pawns on the six four especially, they become worth their weight in gold. 08:17.610 --> 08:19.680 So anyway, h takes is just desperate. 08:19.680 --> 08:28.110 E takes g takes H three, Bishop takes H, three, rook takes F six rook c h, check king H seven and 08:28.110 --> 08:30.840 now rook C seven, check King G six. 08:31.140 --> 08:33.510 The king's brought into a mating that this is fun. 08:33.510 --> 08:36.690 King H five And guess what ends the game here? 08:38.680 --> 08:39.090 Yeah. 08:39.430 --> 08:39.990 Free. 08:40.000 --> 08:42.670 So Bishop G for mate France and the game. 08:42.670 --> 08:47.810 If rugby one check, then we're just going to chat mate soon. 08:47.830 --> 08:51.010 If Rook takes a five, we're just going to take that bishop out. 08:51.040 --> 08:52.090 Thanks very much. 08:52.300 --> 08:56.260 This move also friends now mating again. 08:56.530 --> 08:58.930 So say this possession the king can come to the centre. 08:58.930 --> 09:00.970 It's just crushing bishop up. 09:00.970 --> 09:05.710 So yeah, a very nice clear cut kind of exchange sacrifice game. 09:05.710 --> 09:12.480 The English opening really seemed beautiful from beginning to end in this game with karpov's treatments. 09:12.490 --> 09:18.040 I hope you enjoyed this game and consider the positional exchange sacrifice as part of your toolkit. 09:18.040 --> 09:23.380 So things to look out for which make this really effective is that statistically it's like there's a 09:23.380 --> 09:25.870 statistical context to this. 09:25.900 --> 09:31.930 Look at all the potential light square liabilities in Black's position because of the pawns on the dark 09:31.930 --> 09:32.530 squares. 09:32.530 --> 09:36.070 This makes the exchange sacrifice particularly dangerous. 09:36.070 --> 09:39.720 If this guardian bishop can be removed and we have this bishop without the counterpart. 09:39.730 --> 09:43.990 So that's essentially what the transaction was getting. 09:43.990 --> 09:50.830 This bishop with that counterpart and white running rampant on light squares with gigantic compensation. 09:50.830 --> 09:52.060 I hope you enjoyed this. 09:53.200 --> 09:54.040 Thanks very much.