WEBVTT 00:01.020 --> 00:01.640 Hi there. 00:01.710 --> 00:05.460 In this lecture, we see Alexander Alekhine playing against Claus Jung. 00:05.820 --> 00:07.680 This is in 1942. 00:07.710 --> 00:08.280 Let's have a look. 00:08.310 --> 00:15.860 D4 alekhine d5 c4 e6 might have 3956. 00:16.170 --> 00:19.140 Geoffrey So a Catalan opening from Alekhine. 00:19.380 --> 00:20.950 This is all the rage nowadays. 00:20.970 --> 00:23.500 Catalan systems we have detailed. 00:23.520 --> 00:33.450 C4 So now Queen a full Czech knight bd two bd seven rather Bishop G2 a6 white gets the pawn back. 00:34.210 --> 00:38.970 B5 and here a bit of an expedition move. 00:39.000 --> 00:44.830 Queen C6 So you might wonder, well, okay, the rook moves and surely blacks can play. 00:44.850 --> 00:46.290 Bishop b7 Yeah. 00:46.380 --> 00:48.450 So where's the inconvenience? 00:49.620 --> 00:50.760 It's interesting. 00:50.940 --> 00:54.510 White Castles, Bishop Bb7, the Queen goes back. 00:55.470 --> 00:56.910 We have C5. 00:58.400 --> 00:59.930 And now Air Force One perk. 00:59.930 --> 01:05.000 At least if the Rock's not on air, there's a potential invasion point on a seven. 01:05.750 --> 01:11.450 We have an offer of a pawn, actually, in effect here, a gambit with A4 as well. 01:11.450 --> 01:13.730 And Black accepts that kind of gambit. 01:13.880 --> 01:18.060 Black takes on a free to be able to take on D4. 01:18.080 --> 01:19.970 So is this risky? 01:20.090 --> 01:23.210 We do have a bishop without a counterpart. 01:23.240 --> 01:26.300 We have a leverage to open up the afoul. 01:26.660 --> 01:29.250 So there is an element of risk here. 01:29.270 --> 01:33.350 We have eight tanks, first 8/8 and our rook D one. 01:33.350 --> 01:41.510 So one of the points here is that also one is in a good position to try and open up the center file 01:41.900 --> 01:43.070 with a frame. 01:43.100 --> 01:46.910 We have Queen B sinks and now Knight. 01:47.420 --> 01:48.680 So that protects the pawn. 01:48.680 --> 01:50.360 We have Knight B two. 01:52.460 --> 01:56.990 And this move does mean that Knight be free could be coming next. 01:58.100 --> 02:01.910 So E5 is played to try and reinforce the D4 pawn. 02:02.300 --> 02:07.280 Perhaps Safer would have been just to get get on and castle with Bishop E7. 02:07.490 --> 02:08.540 So Knight be free. 02:08.540 --> 02:13.310 Just get on and Castle Knight 64 and that should be an even possession. 02:13.640 --> 02:21.140 So E5 is it providing a lever the d4 pawn whilst the king is still in the centre? 02:22.310 --> 02:25.730 We have Knight be free here. 02:26.720 --> 02:34.220 So this is an interesting move, which means that maybe E3 is going to be more effective on Knight E4. 02:35.270 --> 02:37.300 This is an interesting alternative. 02:37.310 --> 02:39.470 This possession with Knight takes F6. 02:40.160 --> 02:43.550 Czech is actually a little bit dangerous for black. 02:43.550 --> 02:50.540 For example, if Knight takes F6, there's Bishop C6 Jack and all of a sudden White's got compensation 02:50.540 --> 02:51.020 here. 02:51.680 --> 02:53.000 This isn't good. 02:54.470 --> 02:57.920 So, for example, D3 takes this position. 02:58.730 --> 02:59.660 D4. 03:00.350 --> 03:01.190 Bishop b4. 03:01.190 --> 03:01.820 Check. 03:02.030 --> 03:03.440 Bishop d6. 03:05.050 --> 03:09.490 And you can see that actually actually, the king is not even safe here because there's a back row issue 03:09.490 --> 03:11.210 now on Route eight. 03:11.230 --> 03:13.510 There's actually can be spot for ten points. 03:13.900 --> 03:18.820 This is just a fictional continuation, of course, But Bishop de seven, there's a back row issue because 03:18.820 --> 03:20.830 we've got access to eight. 03:21.190 --> 03:25.630 So, you know, there could be this kind of scenario, potentially a disaster scenario. 03:25.660 --> 03:32.290 So, yeah, 94, I mean, that's not all forced, but it does show some of the dangers here. 03:35.590 --> 03:38.620 So, yes, interesting stuff. 03:39.500 --> 03:43.850 Otherwise, you know, sometimes there's a possibility of even Bishop C-6 just to keep the king in the 03:43.850 --> 03:44.270 center. 03:44.270 --> 03:44.690 So. 03:44.690 --> 03:45.340 Okay. 03:45.350 --> 03:49.340 But night before he was played, we have 9c5. 03:49.790 --> 03:51.020 So here. 03:51.080 --> 03:56.720 If Bishop e7e fray is actually rather dangerous for playing. 03:57.410 --> 04:07.310 So for example, the D frame would be a key mover if D takes E3, this gambit is actually quite dangerous. 04:07.310 --> 04:16.040 Now, Queenie, there's Bishop 87 and here 90 C five, and the king is actually kept in the center, 04:16.040 --> 04:17.000 basically of the Queen. 04:17.000 --> 04:21.740 Saint C five, Queen six, B five, Jack, Bishop C six. 04:21.740 --> 04:24.440 The king's being kept in the center of advantage for mind. 04:24.950 --> 04:33.200 So that's why if this happens, you know, defray but then Queen C six and what's going to be fine. 04:33.230 --> 04:39.410 The gambit has been given back and Black has got King Safety, the King's Castle. 04:39.410 --> 04:41.120 And that's that's an equal position. 04:41.390 --> 04:50.480 But in the game we have actually Knight C five being played Knight Saint C5 and now Bishop take C5 is 04:50.480 --> 04:57.410 played if Queen saying C5 can you see what white can do here which is interesting. 05:00.150 --> 05:02.640 Yeah, well, we can play Bishop C6 Jack. 05:03.450 --> 05:06.870 So the king loses its castling, writes his castling rights. 05:07.170 --> 05:13.830 Queen F5 is actually possible to sack a piece with the king in the center and white blasting through 05:13.830 --> 05:14.430 the defile. 05:14.430 --> 05:23.430 So once hitting the rook, hitting d4, this position is actually very good compensation for the material, 05:23.430 --> 05:27.270 an access route to the king hair bouncy roads of attack. 05:28.320 --> 05:34.350 And we can see that we're going to get material back soon with interest in this situation. 05:34.680 --> 05:40.980 We're getting material back and we can even transition to a winning endgame. 05:40.980 --> 05:45.960 So this position, we can even give back the exchange since the leads are into a simpler endgame, which 05:45.960 --> 05:46.590 is winning. 05:46.860 --> 05:50.670 So yes, there are interesting, interesting possibilities of the Queen. 05:50.670 --> 05:58.050 Take C5, but Bishop takes C5 was played and how can we keep the king possibly in the center? 05:58.050 --> 06:02.430 So this is imaginative and well worth it, this next move. 06:02.430 --> 06:06.000 So for 100 points, how would you keep the king in the center? 06:07.200 --> 06:12.750 So becoming a monster of attack of game examples like this, trying to keep the king in the center. 06:13.440 --> 06:17.010 Okay, hopefully you spot that. 06:18.890 --> 06:24.230 We play rook a sex Yep rook sex exchange sac. 06:24.690 --> 06:29.900 Basically, if Queen c7 if it's refused, Rook C6 is winning a piece. 06:30.470 --> 06:31.100 Ouch. 06:32.060 --> 06:32.300 Thanks. 06:32.300 --> 06:33.740 Losing that piece down. 06:34.040 --> 06:40.430 So Queen takes a six, Queen takes C5, and immediately we're hitting as well as restricting the king 06:40.430 --> 06:41.030 from castling. 06:41.030 --> 06:50.060 We're hitting E5 Queen E6 Bishop C6 Shank 97 and now Bishop takes D7 Checkers played. 06:51.160 --> 06:53.170 Getting the king towards the center. 06:53.740 --> 07:00.790 If Queen 67, we have Queen 65, Czech, Queen Saxby, Czech winning. 07:01.240 --> 07:02.710 So King takes these seven. 07:02.710 --> 07:04.900 But now Queen A7 check. 07:05.110 --> 07:13.300 And here is actually a crucial mistake according to the engine's king C6 That's a bad mistake. 07:14.530 --> 07:19.090 It seems black hands still hold on with precise play with King D6. 07:19.990 --> 07:28.030 So for example, it looks kind of counterintuitive because the bishops on a dark square and the bishops 07:28.030 --> 07:29.650 just going to do this surely. 07:29.890 --> 07:38.500 Yeah, but then Queen D7 check as king he thinks check King F five and now the king's on White squares. 07:38.530 --> 07:46.330 Okay, on the dotted square again, but ends up on H5 and actually black has the advantage so black 07:46.330 --> 07:50.590 missed this possibility of of King D6. 07:50.590 --> 07:57.670 Oh there if we look at this again you know we we mentioned in this position 08:00.430 --> 08:01.510 Queen D seven. 08:02.560 --> 08:08.740 So instead of Bishop D two if queen a six chain this doesn't really help you know queen free check before 08:09.220 --> 08:19.210 checking f six blacks got the advantage their effort is a critical test and here emphasize E5 check 08:20.440 --> 08:27.430 Queen 86 check Bishop F4 should be about even so, this is like a worst case scenario whites even with 08:27.430 --> 08:30.370 great prospects anyway, so that's the worst case scenario. 08:30.370 --> 08:35.650 But this really helps when actually King C thinks so, even though it's on the point square. 08:35.650 --> 08:46.330 Bishop D2 we have Rook HD eight and now taking away the D5 square with E4 if rook C one shank, yes, 08:46.330 --> 08:54.790 the D5 square could be used and black would actually be better here with this ridiculous king on D5. 08:54.790 --> 08:57.940 But actually how do we actually exploit that? 08:58.360 --> 09:00.610 So E4 though is great. 09:00.610 --> 09:07.150 We have Queen B Frank if D tanks, E frame Bishop takes E3 this position. 09:07.570 --> 09:15.580 Queen C five, Jack Queen Science B five, check Rook C one check Queen sex by just winning. 09:15.580 --> 09:21.460 So Queen B frame we have rook a one. 09:22.870 --> 09:24.910 So what is going on here? 09:24.910 --> 09:28.120 We have B for Rook six check. 09:29.230 --> 09:36.070 Can we find Rook A five check King C six And now that common square C5 between the rock and the Queen 09:36.070 --> 09:42.800 can the common square King D7 and now Rook seven check and black is being mated now end of game Black 09:42.820 --> 09:43.660 has to resign. 09:43.660 --> 09:49.270 Black could delay but otherwise you know Queen E seven is going to be mating. 09:50.970 --> 09:51.720 Either way. 09:53.370 --> 09:59.430 Fascinating how the king was kept in the center via an exchange sacrifice in this game. 09:59.550 --> 10:02.580 The initial gambit, though, was also kind of interesting. 10:02.580 --> 10:04.670 It's weakening black on the squares. 10:04.680 --> 10:10.620 We do have an ingredient here as part of this, this light squared bishop of our counterpart. 10:11.040 --> 10:13.800 We do have some access routes that are king. 10:14.520 --> 10:18.720 And this pressure black is too slow. 10:18.750 --> 10:24.190 Like he's not keen enough to safely castle and runs into this exchange sac. 10:24.450 --> 10:31.650 So a fascinating game for keeping the king in the center and the compensation that could result. 10:31.860 --> 10:34.860 So, yes, I hope you found that interesting and instructive. 10:35.220 --> 10:36.030 Okay. 10:36.690 --> 10:37.440 And so much.