Various topics
Various topics

Various topics

This blog is about various different topics.


Who are the least and the most prepared for Q-day?

13 Jul 2026 10 minute read 0 comments I_g_o_r

In this post, we consider who are the least and the most prepared for Q-day, as of July 14, 2026. There is no official country-by-country index ranking the "least/most prepared for Q-day." However, cybersecurity experts identify a "quantum divide". D...

Analysis of Strategy’s survivability under conditions of declining BTC price

8 Jul 2026 1 minute read 0 comments I_g_o_r

1) Ten key factors, which contribute to BTC price decline in the future   1.1 Many BTC bulls sold BTC at the top of the last cycle. Some of them completely abandoned BTC, but some stay in cash and wait for BTC to go to $10,000. https://www.youtube.co...

Colle System in chess games

7 Jul 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Colle System in chess games. 1. d2d4, d7d5. 2. g1f3, g8f6. 3. e2e3, e7e6. 4. b1d2, f8d6. 5. f1d3, e8g8. The Colle System is a solid, 1.d2d4 chess opening Edgard Colle, designed to achieve a rapid, safe setup (1. d2d...

Projects for global money movement, in progress

5 Jul 2026 8 minute read 0 comments I_g_o_r

Tech companies are currently shifting away from centralized, proprietary tokens. Instead, they are collaborating through industry consortiums. The most notable project for global money movement is Open USD (OUSD), a new stablecoin backed by over 140...

Advantages of dynamical passwords generators vs traditional passwords managers

1 Jul 2026 2 minute read 0 comments I_g_o_r

In this post, we consider advantages of dynamical passwords generators (DPGs), for example https://www.dynpass.online/, vs traditional passwords managers. DynPass.online utilizes dynamic password generation principles for authentication rather than a...

Center game in chess

30 Jun 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Center game in chess. 1. e2e4, e7e5. 2. d2d4, e5d4. 3. d1d4, b8c6. 4. d4e3, g8f6. 5. b1c3, f8e7. The Center Game is an ancient chess opening, appearing in literature as early as 1590, that aims for early central con...

Center counter defense in chess games

23 Jun 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Center counter defense. 1. e2e4, d7d5. 2. e4d5, d8d5. 3. b1c3, d5a5. 4. d2d4, g8f6. 5. g1f3, c8g4. The Center Counter Defense, commonly known as the Scandinavian Defense, is a chess opening for blacks that begins 1....

Caro-Kann defense in chess games

16 Jun 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Caro-Kann defense. 1. e2e4, c7c6. 2. d2d4, d7d5. 3. b1c3, d5e4. 4. c3e4, g8f6. 5. e4f6, e7f6. The first games where the Caro-Kann defense was used, were played in Calcutta, 1856, by a mysterious Indian chess player...

Budapest defense in chess games.

9 Jun 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Budapest defense. 1. d2d4, g8f6. 2. c2c4, e7e5. 3. d4e5, f6g4. 4. c1f4, b8c6. 5. g1f3, f8b4+. ATTENTION!!! Avoid this trap for whites. 6. b1d2, d8e7. 7. a2a3, g4e5. 8. a3b4, e5d3 checkmate! The Budapest Defense (...

Bogoljubov’s defense in chess games.

2 Jun 2026 1 minute read 0 comments I_g_o_r

In this post, we consider the Bogoljubov’s defense. 1. d2d4, g8f6. 2. c2c4, e7e6. 3. g1f3, f8b4. 4. c1d2, b4d2. 5. d1d2, d7d5. The Bogoljubov Defense (or Bogo-Indian Defense) is a solid, flexible opening for blacks, characterized by the moves 1....