I have been doing repetitive tactical training on and off since 2005 where I was a part of a group referred to as the Knights Errants . (now disbanded) This was a movement started by The Man of De La Maza and passed on Tony De La Maza's book Rapid Chess Improvement and his technique of doing 7 circles of the set of CT-ART problems.
https://mandelamaza.blogspot.com//
The only blogging member left standing is Temposchluker and frequent commenter Robert Coble. You might find his years of chasing the elusive chess improvement pot of goal interesting. https://temposchlucker.blogspot.com/?m=1
As for me, I'm in a chatty mode and am starting blogging again.
Here is my main source of tactical training .
CT-ART is an inexpensive chess program available on PC desktop and android devices for chess tactic training. Chess Dojo review will give you a good view of it . https://www.youtube.com/watch?v=ChOmOAZdTC0&t=26s .
This is based on the various books from Maxim Blokh
Combinational Motifs
The Art of Combination
600 Combinations
Practically all the problems in CT-Art are from the 1200 Combinational Motifs Verbatim. The latest version has an advanced section which are more involved study positions. I have not delved into them yet. I am not an advanced player.
When solving a problem and you make a number of mistakes the program drops down a 5X5 Square of a simpler chess problem of the same theme. I found this to be exceedingly helpful. Most of these are found from the 960ish 5x5 problems in the hard to find book The Art of Combination. I have been drilling on these problems on and off for a number of years. I have found that I take some time off maybe a year or two and return I seem to be playing stronger and this is confirmed by my internet ratings. .
The following are a Superset list of problems from the The Art of Combinations that I am studying.
176,186!,
204, 211, 215, 222, 229, 235, 237, 244, 245, 247, 248, 249, 267, 280, 286, 288, 290, 291, 293, 294, 295, 299
300. 311.313. 336. 338. 351. 363. 371!, 372, 374, 375!, 380, 385, 389, 390!, 391, 397
411, 412, 420, 422, 426, 427, 420, 422, 426, 427, 430, 431, 441, 442, 447, 448, 449, 457!, 467, 469, 475, 492
507,526,534,535,539, 540,543, 545, 547, 559, 560, 576, 578!, 586, 588, 592
606, 607, 611, 612, 620, 621, 623, 625, 627, 628, 628, 638, 640. 643, 644!, 648, 649, 650, 651!, 652!, 653, 654, 655, 656, 658, 662, 669, 670, 671, 674, 675, 676, 677, 678, 679, 680, 681!, 683, 685, 686, 687, 689,690, 693, 695, 698
700, 703, 706, 713,714!, 716, 718, 720, 723, 724,725,726!, 727, 731, 732, 733, 736,737, 738, 746, 752, 758! 764, 765, 767,769!, 770, 771, 772!, 773, 781, 797
801, 806, 811, 816, 828, 835, 837, 838, 842, 843, 844!, 845, 851, 852, 856, 858, 859!, 860, 865, 868, 896, 897, 899
900, 903, 906, 909, 910, 915!, 916!, 918, 920, 921, 924!, 927!, 928!, 931!, 932, 933, 934, 935, 936!, 937!, 938!, 940!, 941, 946, 947, 948!, 949, 950, 951, 953, 954, 955
176,186!,
204, 211, 229, 237, 245, 247, 248, 267, 280, 286, 288, 290, 291, 296, 293, 295,
300, 313, 336, 363, 371, 372, 375!, 389, 390!, 391
411, 422, 436,427, 431, 442, 448, 449, 457!, 469,492
507,535,540, 543, 545, 547, 559, 576, 578!, 586, 587, 588, 592
606, 612, 621, 640, 643, 644!, 649, 650, 651!, 652!, 653, 654, 655, 656, 658, 662!, 671, 674, 675, 676, 677, 678, 679, 680, 681!, 683, 685, 686, 687, 693, 698
705, 713, 714!, 716, 720, 723, 725, 726!, 727, 731, 737, 738,746, 752, 758! 764, 765, 767,769!, 770, 771, 772!, 773, 781, 797
801, 835, 838, 842, 843, 844!, 852, 856, 858, 859!, 865, 868, 896, 897
