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Topics referred to by the same term
RA4 may refer to: The RA-4 process, a photographic print process (11835) 1985 RA4, a minor planet RA4 an untrimmed paper size slightly larger than A4
RA4
1996 and 1997 chess matches
Rc8 18.Rfc1 Qc4 19.Qxc4 Rxc4 20.Rcb1 b6 21.Bb8 Ra4 22.Rb4 Ra5 23.Rc4 0-0 24.Bd6 Ra8 25.Rc6 b5 26.Kf1 Ra4 27.Rb1 a6 28.Ke2 h5 29.Kd3 Rd8 30.Be7 Rd7 31.Bxf6
Deep Blue versus Garry Kasparov
Deep_Blue_versus_Garry_Kasparov
Chess match between Ju Wenjun and Tan Zhongyi
hxg5 20. cxd5 exd5 21. Rfe1 Rb8 22. b3 g4 23. Nf1 a4 24. bxa4 Rb4 25. a5 Ra4 26. Rxd5 Be6 27. Rc5 Rxa2 28. Ne3 Ra8 29. Nd5 R8xa5 30. Rxa5 Rxa5 31. Nf4
Women's World Chess Championship 2025
Women's_World_Chess_Championship_2025
Controlled-access highway in Italy
menù a tendina il RA 4" (in Italian). Retrieved 31 August 2024. Wikimedia Commons has media related to Raccordo autostradale RA4. ANAS SpA (in Italian)
Raccordo_autostradale_RA4
(formerly part of Agfa Wolfen/ORWO) Carestream (USA) Manufacture of Kodak RA4 papers. (Formerly part of Kodak). Champion (Malaysia) Manufacture of photographic
List of photographic equipment makers
List_of_photographic_equipment_makers
2022 chess controversy
"stronger defence". Niemann dismissed this possibility, arguing that after 31...Ra4 by Black, with b7–b5 to come, Black would soon have the advantage with the
Carlsen–Niemann_controversy
Method to convey chess moves
Bxc4+ 19.Kg1 Ne2+ 20.Kf1 Nxd4+ 21.Kg1 Ne2+ 22.Kf1 Nc3+ 23.Kg1 axb6 24.Qb4 Ra4 25.Qxb6 Nxd1 26.h3 Rxa2 27.Kh2 Nxf2 28.Re1 Rxe1 29.Qd8+ Bf8 30.Nxe1 Bd5 31
Algebraic_notation_(chess)
Military unit
Regimento de Artilharia N.º 4, RA4) OTE is a base unit of the Portuguese Army, stationed in Leiria. Presently, the RA4 is dependent on the Rapid Reaction
4th Artillery Regiment (Portugal)
4th_Artillery_Regiment_(Portugal)
Chess match between Magnus Carlsen and Ian Nepomniachtchi
Rh1+ 52. Kg3 gxh5 53. Re6+ Kg7 54. g5 Rg1+ 55. Kf2 Ra1 56. Rh6 Ra4 57. Kf3 Ra3+ 58. Kf2 Ra4 ½–½ Nepomniachtchi–Carlsen, game 3 Game 3 was a 41-move draw
World_Chess_Championship_2021
Chess move
play continued from the diagrammed position as follows: 22... Ra4 23. Nc3 Ra8 24. Nb5 Ra4 25. Nc3 Ra8 26. Nb5 With his 26th move, Karpov attempted to claim
Castling
Chess opening
Rc3 Ke6 33.Kg2 Kd6 34.h4 Ra4 35.Rc2 b5 36.Kf3 b4 37.Ke3 Kd5 38.f3 Ra3+ 39.Kf4 a4 40.g4 fxg4 41.fxg4 b3 42.axb3 axb3 43.Rc7 Ra4+ 44.Kg5 Rb4 45.Rc1 Kd4 46
Grünfeld_Defence
Standard sizes of paper
by international paper sizes and would actually almost exactly match ISO RA4 (215 mm × 305 mm). This size is sometimes known as European Fanfold. While
Paper_size
Group of 32-bit RISC processor cores
(Freescale) Kinetis K, V3, V4, S32K14x Puya PY32F4xx, PY32E4xx Renesas S3, S5, S7, RA4, RA6 Silicon Labs (Energy Micro) EFM32 Wonder ST STM32 F3, F4, L4, L4+, G4
ARM_Cortex-M
Chess endgame study by Fernando Saavedra
unfortunate positions of Black's king and rook doom him to a loss. 6... Ra4 7. Kb3 Black must either lose the rook (allowing White an elementary checkmate)
Saavedra_position
International standard for sizes of raw, untrimmed paper
43 : 61 ≈ 1 : 1.4186 {\displaystyle 43:61\approx 1:1.4186} for RA0, RA2, RA4; 61 : 86 ≈ 1 : 1.4098 {\displaystyle 61:86\approx 1:1.4098} for RA1, RA3;
ISO_217
Chess match
Rd7 71. Rg6 Kc7 72. Rg5 Rd6 73. Rg8 Rh6 74. Ra8 Rh3+ 75. Kc2 Ra3 76. Kb2 Ra4 77. Kc3 a6 78. Rh8 Ra3+ 79. Kb2 Rg3 80. Kc2 Rg5 81. Rh6 Rd5 82. Kc3 Rd6 83
World_Chess_Championship_2018
1956 chess game
simultaneously revealing a discovered attack against Byrne's queen. 24. Qb4 Ra4! Fischer was now sitting very calmly and making moves at a steady pace. His
Game_of_the_Century_(chess)
Compact crossover SUV
equipped with either the Uconnect 3C 8.4A (RA3) or the Uconnect 3C 8.4AN (RA4) infotainment systems, which featured Uconnect Access, and used a Sprint
Jeep_Cherokee_(KL)
Position in rook and pawn versus rook chess endgame
still wins: 1... Ra4 2. Rd1+ Ke7 3. Kc7 Rc4+ 4. Kb6 Rb4+ 5. Ka6 Rb2 The black rook is not sufficiently far away to keep checking: if 5...Ra4+ then 6.Kb5 wins
Lucena_position
Chess match between Anatoly Karpov and Viktor Korchnoi
Rc4 Kd7 36.Bb8 c6 37.Re4 Rxa4 38.c4 Ra5 39.Bxe5 Bxe5 40.Rhxe5 Rxe5 41.Rxe5 Ra4 42.Re4 Ra5 43.h4 h5 44.Rf4 ½–½ August 10. Karpov makes an ill-considered
World_Chess_Championship_1978
American full-size pickup built by Stellantis
"top-of-the-line" radios are the Uconnect ACCESS 8.4A (RA3) and Uconnect ACCESS 8.4AN (RA4). These radios add a full-color, 8.4-inch color touch-screen display, full
Ram_pickup
Indian chess grandmaster (born 1969)
counterplay with the sacrifice of a pawn. 26. axb4 axb4 27. cxb4 Na6 28. Ra4 Nf4+ 29. Bxf4 exf4 30. Nh5 Qb6 31. Qxf4 Nxb4 32. Bb1 Rb7 33. Ra3 Rc7 34.
Viswanathan_Anand
Chess rule
continued: 22... Ra4 (Black loses queenside castling right) 23. Nc3 Ra8 24. Nb5 (first time only, Black lost queenside castling right) Ra4 25. Nc3 Ra8 26
Threefold_repetition
Canadian band
Strawberries: The Story of Jongo Bongo". YouTube. Retrieved 2026-01-05. "RA4: The Human Animal". YouTube. Retrieved 2026-01-05. Rare Americans (2025-04-05)
Rare_Americans
Sports car
December 2006. Toyota Celica parts catalog USA & Canada (revised final), RA4#, MA4#. Toyota. June 1985. 49212R81. "MK I Celica Supra History". celicasupra
Toyota_Supra
Russian chess player (born 1993)
.. Qf6 34. Rf4 Re7 35. Rxg4 Re2 36. c3 Be5 37. Rxd5 Ke7 38. Qg8 Bd6 39. Ra4 Bc7 40. Rxc5 Qd6 41. f6+ Ke6 42. Qe8+ Kxf6 43. Rf4+ Qxf4 44. Qh8+ Ke7 45
Dina_Belenkaya
Chess match between Viswanathan Anand and Magnus Carlsen
his extra pawns in order to advance his f-pawn. The decisive error was 60.Ra4; instead, 60.b4 was suggested by analysts and chess engines as the only move
World_Chess_Championship_2013
Chess endgame of rook & bishop versus rook
Rc3 If instead 5...Kc8, then 6.Rb4 Kd8 7.Rf4 Re1 (or 7...Kc8 8.Bd5 Kb8 9.Ra4) 8.Ba4 Kc8 9. Rb4. Now White completes the following maneuvers, getting the
Rook and bishop versus rook endgame
Rook_and_bishop_versus_rook_endgame
Variant of chess
dxe5 b7(R) 25.exf6 gxf6 26.Bf2 Ra4 27.g2(R) Ra1+ 28.Kh2 Rxb2 29.Qg4 Qd6+ 30.Bg3 Rxg2 31.Kxg2 Qd2+ 32.Kf3 Ra3+ 33.Ke4 Ra4+ 34.Kf5 Qd5+ 35.Kxf6 Rxg4 36.hxg4
Cubic_chess
1992 Kitami K. Endate, K. Watanabe PHO 8.7 km MPC · JPL 11073 Cavell 1992 RA4 Cavell September 2, 1992 La Silla E. W. Elst NYS 3.0 km MPC · JPL 11074 Kuniwake
List of minor planets: 11001–12000
List_of_minor_planets:_11001–12000
Chess match between Viswanathan Anand and Veselin Topalov
b1=Q 68. Nxb1 Qxb1 69. Rdd4 Qa2+ 70. Kg3 a3 71. Rc3 Qa1 72. Rb4+ Ka6 73. Ra4+ Kb5 74. Rcxa3 Qg1+ 75. Kf4 Qc1+ 76. Kf5 Qc5+ 77. Ke4 Qc2+ 78. Ke3 Qc1+ 79
World_Chess_Championship_2010
Chess match between Wilhelm Steinitz and Mikhail Chigorin
Bd7 22.Rxb6 Rhb8 23.Rxb8 Rxb8 24.Rb1 Bc6 25.Re1 Ra8 26.Re2 Ra4 27.Rb2 Rxe4 28.h3 Kd6 29.Nd2 Ra4 30.f3 f5 31.Kf2 Ra3 32.Nb1 Rd3 33.Ke2 e4 34.Nd2 Ra3 35.fxe4
World_Chess_Championship_1889
1991 Siding Spring R. H. McNaught (5) 3.8 km MPC · JPL 21074 Rügen 1991 RA4 Rügen September 12, 1991 Tautenburg Observatory F. Börngen, L. D. Schmadel
List of minor planets: 21001–22000
List_of_minor_planets:_21001–22000
Chess endgame
Kd4 is avoided, because of the diagonal motif with 3...Ra1. 3...Rc5 If 3...Ra4, then 4.Qe7+ Kb6 5.Qd6+ Kb5 6.Qd5+ Ka6 7.Qc5 Ra5 8.Qc6+ Ka7 9.Kc4 and attempting
Queen_versus_rook_endgame
active in the Hiroshima Astronomical Society. JPL · 11072 11073 Cavell 1992 RA4 Edith Cavell (1865–1915) JPL · 11073 11074 Kuniwake 1992 SC1 Ryoku Kuniwake
Meanings of minor-planet names: 11001–12000
Meanings_of_minor-planet_names:_11001–12000
Chess match between Garry Kasparov and Anatoly Karpov
63.Qa5 Qd4 64.Qa1 Qb6 65.Qa2 Kg7 66.Qd2 Qc5 67.Rf1 Rd4 68.Rf3 Qd6 69.Re3 Ra4 70.Re1 h5 71.Rb1 Qd7 72.Qd1 Kh6 73.Qd2+ Kg7 74.Qe3 h4 75.Qf3 Kh6 76.Qe3+
World_Chess_Championship_1990
Family of microprocessor cores with Arm microarchitecture
GD32W5 Nordic nRF91, nRF5340, nRF54 NXP LPC5500, i.MX RT600 ON RSL15 Renesas RA4, RA6 ST STM32 C5, H5, L5, U5, WBA Silicon Labs Wireless Gecko Series 2 Cortex-M35P
ARM_Cortex-R
Chess match between Vladimir Kramnik and Veselin Topalov
Rc2 Kf5 52. Ra2 Rb5 53. Nc6 Rb7 54. Ra5+ Kg6 55. Ra2 Kh5 56. d5 e5 57. Ra4 f5?? 57...Nxf2! 58.Kg3 e4! 59.Kxf2 Rb2+ 60.Ke1 Rb1+ 61.Kf2 Rb2+ followed
World_Chess_Championship_2006
Minivan for international markets
fifth-generation Accord sedan, it was offered with an optional 4WD (with RA2 and RA4 chassis), and from 1997 with a 3.0-litre V6 J30A engine with the RA5 chassis
Honda_Odyssey_(international)
Chess match between Ding Liren and Gukesh Dommaraju
Bd5 Bf5 34. Rc1 Kg7 35. Rc7 Bg6 36. Rc4 Rb1+ 37. Kg2 Re1 38. Rb4 h5 39. Ra4 Re5 40. Bf3 Kh6 41. Kg1 Re6 42. Rc4 g4 43. Bd5 Rd6 44. Bb7 Kg5 45. f3 f5
World_Chess_Championship_2024
American businessman (1929–2023)
in Hillsboro, as 'Gordon Moore Park', and the building formerly known as RA4, as 'Moore Center', after Gordon Moore. As of February 2023, Moore's net
Gordon_Moore
Species of bird
67 (2): 285–306. Bibcode:2020Ardeo..67..285G. doi:10.13157/arla.67.2.2020.ra4. ISSN 0570-7358. S2CID 216382815. Patrick Barkham, ‘We are hopeful’: small
Western_capercaillie
German chess player (1862–1934)
Rc4 33. Bb2 Bc3 34. Bxc3 Rxc3 35. Rb1 Kc7 36. g5 Rc4 37. gxh6 gxh6 38. a5 Ra4 39. Kg3 Rxa5 40. Kg4 Ra3 41. Rd1 Rb3 42. h4 Ne7 43. Ne1 Nf5 44. Nd3 a5 45
Siegbert_Tarrasch
Neighborhood of Delhi in South Delhi, India
Feminist Politics, Intersectionality and Social Justice. Google Books. p. RA4–PT17. Retrieved 8 November 2025. (restricted preview) Jha, Gangadhar (1988)
Malviya_Nagar_(Delhi)
Minivan by Honda for the North American and Chinese market
1998) (Not available in North America) RA3 = 2.3 F23B7 FWD Odyssey (1998) RA4 = 2.3 F23B7 4WD Odyssey (1998) (Not available in North America) RA5 = 3.0
Honda_Odyssey_(North_America)
In chess, the sacrifice of a queen
19. Kg1 Ne2+ 20. Kf1 Nxd4+ 21. Kg1 Ne2+ 22. Kf1 Nc3+ 23. Kg1 axb6 24. Qb4 Ra4 25. Qxb6 Nxd1 (second diagram) and Black has emerged with a large material
Queen_sacrifice
December 24, 1982 Nauchnij L. G. Karachkina · 4.1 km MPC · JPL 29123 1983 RA4 — September 2, 1983 Anderson Mesa N. G. Thomas · 5.5 km MPC · JPL 29124
List of minor planets: 29001–30000
List_of_minor_planets:_29001–30000
Situation in chess without a legal move
continued: 72... Ra8 73. Rc1 Avoiding the threatened 73...Nc2+. 73... Ke3 74. Rc4 Ra4 75. Rc1 Kd2 76. Rc4 Kd3 76...Nc2+ 77.Rxc2+! Kxc2 is stalemate. 77. Rc3+!
Stalemate
14th season of the Top Chess Engine Championship
Kb3 Nc5+ 100. Kb4 Na6+ 101. Ka4 Ra1+ 102. Kb3 Nb8 103. Kb2 Ra4 104. Kb3 Ra1 105. Kb2 Ra4 106. Re5+ Kf4 107. Rh5 Kg4 108. Kb3 Ra1 109. Rc5 Nc6 110. Rc4+
TCEC_Season_14
Match between Bobby Fischer and Boris Spassky
(diagram) 23. Kf3 c3 24. Kxe4 cxd2 25. Rxd2 Rb5 26. Rc2 Bd6 27. Rxc6 Ra5 28. Bf4 Ra4+ 29. Kf3 Ra3+ 30. Ke4 Rxa2 31. Bxd6 cxd6 32. Rxd6 Rxf2 33. Rxa6 Rxh2 34.
World_Chess_Championship_1972
Chess match between Ian Nepomniachtchi and Ding Liren
Qxa4 33. Rxa4 Rxc3 34. Bb2 Rb3 35. Bxe5 Rb4 36. Rxa5 Rxe4 37. Rxe4 Nxe4 38. Ra4 Nd4 39. Bxd4 cxd4 40. Rxd4 g6 41. Ne3 Kg7 42. Rb4 Ng3 43. Rb7 Nf5 44. Ng4
World_Chess_Championship_2023
Chess championship in Tripoli, Libya
30... Rxa5 31. bxa5 Rxa5 32. f4 Bxf4 33. Rg6 Kf7 34. Rxe6 Kxe6 35. Bxf4 Ra4 36. Kf3 Rc4 37. Be3 b4 38. Rd4 Rxd4 39. Bxd4 g5 40. Ke3 1–0 Ruy Lopez, Closed
FIDE World Chess Championship 2004
FIDE_World_Chess_Championship_2004
Chess opening
24.Ba4 Qb7 25.b3 Qb6 26.Qxb6 Rxb6 27.Rc4 Rd8 28.Bxc6 Rxd6 29.Bf3 Ne3 30.Ra4 Rb4 31.Rxa5 Rxf4 32.Bb7 Rb6 33.Ba8 Nf5 34.Kb2 Nxh4 35.Ka3 Nf5 36.c4 Nd4 37
Modern_Defense
Land forces of the Armed Forces of Portugal
RE1 CTOE RL2, CSMIE, RTransp CIGeoE AM CM IPE RI14 RI13 RI15 RI10 RC3 RC6 RA4 RA5 RI1 Detach RI1 RI19 RE3 RT ES RMan EA ESE RAME RCms RAA1 UAGME Obtainment
Portuguese_Army
Humorous chess puzzle
forcing mate in six moves. The solution is: 1. Bb1 b2 2. Ra2 b3 3. Ra3 b4 4. Ra4 b5 5. Ra5 b6 6. Be4# Krabbé wrote a whole article on the caterpillar theme
Joke_chess_problem
astronomers are exploring the wonders of the Universe JPL · 21073 21074 Rügen 1991 RA4 The island of Rügen in the Baltic Sea, a popular resort JPL · 21074 21075
Meanings of minor-planet names: 21001–22000
Meanings_of_minor-planet_names:_21001–22000
Chess tactic
zugzwang. The game continued: 3... Kd8 4. Rh7 zugzwang again 4... Rb4 5. Ka7 Ra4+ 6. Kb6 1-0 Key square (Flear 2004:15) (Dvoretsky 2006:21) Alburt vs. Kasparov
Triangulation_(chess)
Display controller
did include such a character line cache. Using the full address range RA0-RA4:CA0-CA13 the 6845 can address 214+5 = 524,288 words of memory. A word may
Motorola_6845
Chess variant played on a 6×6 board without bishops
a5 Kd5 12.Qa3 Qb5 13.Qa2+ Ke5 14.Rb1 Rxa5 15.Rxb5 Rxa2 16.Rb1 Ra5 17.f3 Ra4 18.fxe4 c4 19.Nf3+ Kd6 20.e5+ Kd5 21.exf6=Q Nc5 22.Qxd4+ Kc6 23.Ne5# 1–0
Los_Alamos_chess
Chess match between Alexander Alekhine and Max Euwe
Bxd4 exd4 17. Rxd4 c5 18. Ra4 Nxd5 19. Bg4 Qc7 20. Rxa7 Nxc3 21. bxc3 Ra8 22. Rxb7 Qxb7 23. Bf3 Qd7 24. Bxa8 Rxa8 25. Qe4 Ra4 26. Qe2 Bf8 27. h3 Qe6 28
World_Chess_Championship_1935
September 9, 1996 Prescott P. G. Comba · 3.6 km MPC · JPL 100445 Pisa 1996 RA4 Pisa September 12, 1996 Colleverde V. S. Casulli · 1.4 km MPC · JPL 100446
List of minor planets: 100001–101000
List_of_minor_planets:_100001–101000
First chess-playing automaton
Initial position: White to move: Kf2 + Ra4 vs Kb6. The rook and king must coordinate to drive the black king to the corner and deliver mate.
El_Ajedrecista
German chess composition society and magazine
refuted by 1...Ra4!, and 1.Qh7? (threatens 2.Qb1#) is refuted by 1...Re4! 1.Qf7! (threatens 2.Nd3+ Kd1 3.Qb3#) Bd5 2.Qa7 (threatens Qa1#) Ra4 3.Qh7! (threatens
Die_Schwalbe
Chess match between Garry Kasparov and Anatoly Karpov
Nf5 Ne5 24.Bxe5 dxe5 25.Nb3 Qb6 26.Qxd3 Ra8 27.Rc1 g6 28.Ne3 Bxa3 29.Ra1 Ra4 30.Ng4 Bf8 31.Rc1 Qd6 32.Nc5 Rc4 33.Rxc4 bxc4 34.Nxb7 cxd3 35.Nxd6 Bxd6 36
World_Chess_Championship_1986
GD32W5 Nordic nRF91, nRF5340, nRF54 NXP LPC5500, i.MX RT600 ON RSL15 Renesas RA4, RA6 ST STM32 C5, H5, L5, U5, WBA Silicon Labs Wireless Gecko Series 2 Cortex-M35P
TI_MSP432
New Zealand chess grandmaster (born 1960)
Bc4 exd4 15.cxd4 Nxa5 16.Rxa5 Rxb1 17.e5 dxe5 18.dxe5 Ne8 19.Rxa6 Rb6 20.Ra4 c5 21.h3 Bh5 22.Ra7 Nc7 23.e6 Bf6 24.e7 Re8 25.Rd8 Rxd8 26.Rxc7 Qb8 27.exd8=Q+
Murray_Chandler
Situation in chess endgame
h8-square and the bishop on the g8- or h7-square). White wins: 1. Kf5! Kg8 2. Ra4!! The only way to win. If 2.Kg6? Kf8 and the black king is able to get out
Wrong_bishop
Chess opening
37.Rxc5 Ng2+ 38.Ke2 e3 39.Nf3 g6 40.Rd5 Kf7 41.Rd6 Kg7 42.h4 exd2 43.Rxd2 Ra4 44.Kf2 Nxf4 45.gxf4 Rxf4 46.Rd4 Rxd4 47.Nxd4 Kf6 48.Ke3 g5 49.h5 Ke5 50.Nf3+
Anderssen's_Opening
Qd5 43.Qg4 Qe5+ 44.Qg3 Qd5 45.Qg4 Re4 46.Qg5+ Qxg5 47.hxg5+ Kxg5 48.Rxd2 Ra4 49.Rd3 Kf4 50.Rh3 g5 51.Rb3 ½–½ The eighth game of this series was the only
World_Chess_Championship_1929
Chess match between Emanuel Lasker and Frank Marshall
24.Qd7 Qh1+ 25.Ka2 Qe4 26.Qxf7 Qxa4+ 27.Ra3 Qc6 28.Qxh7 Qd5+ 29.b3 Re2 30.Ra4 Rxf2 31.Qh8+ Ka7 32.Kb2 c5 33.Rc4 Rf1 34.Ka2 Rf7 35.Qc8 b6 36.Rg4 Qd7 37
World_Chess_Championship_1907
Overview of game 6 in 2021 World Chess championship
give him a difficult position to defend. 53. Rxa3 Qxh4+ 54. Kg1 Qe4 55. Ra4 Be5 56. Ne2 Qc2 57. R1a2 Qb3 58. Kg2 Qd5+ 59. f3 This move weakens the e3-pawn
Carlsen versus Nepomniachtchi, World Chess Championship 2021, Game 6
Carlsen_versus_Nepomniachtchi,_World_Chess_Championship_2021,_Game_6
Type of chess problem
different piece. The solutions are: a) diagram position: 1. Qf6 Nc5 2. Qb2 Ra4# b) with black rook at a6: 1. Rb6 Rb1 2. Rb3 Ra1# c) with black bishop at
Helpmate
33.Kd3 Rg2 34.fxe5 f5 35.Rb4 Be4+ 36.Kd4 Rg4 37.Be1 a5 38.Rb2 Bd5+ 39.Kd3 Ra4 40.Ke2 Rxa3 41.Rd2 Bc4+ 42.Kf2 Kd7 43.Rd4 Bb5 44.Bd2 a4 45.Bg5 Rd3 46.Rxd3
World_Chess_Championship_1957
GD32W5 Nordic nRF91, nRF5340, nRF54 NXP LPC5500, i.MX RT600 ON RSL15 Renesas RA4, RA6 ST STM32 C5, H5, L5, U5, WBA Silicon Labs Wireless Gecko Series 2 Cortex-M35P
List of ARM Cortex-M development tools
List_of_ARM_Cortex-M_development_tools
Behavior of projectiles in flight
G2, G5, G6, G7, G8, GL, GS Spherical 9/16"SAAMI, GS Spherical Don Miller, RA4, Soviet 1943, British 1909 Hatches Notebook and for some Lapua projectiles
External_ballistics
General principle in chess
the technique (or see annotated text). The position is after White's 54.Ra4. White won on move 82. Mecking vs. Korchnoi, 1974 Similar positions with
Tarrasch_rule
Eighteenth season of the Top Chess Engine Championship
21.b5 Nb4 22.Qxd4 Nc2 23.Qxd7 Nxe1 24.Nxe1 Rc7 25.Qd4 Qxd4 26.Rxd4 Rd8 27.Ra4 b6 28.Be3 Rd5 29.Bxb6 Rc1 30.Bxa5 Rxb5 31.Bd2 (see analysis diagram 3). Black
TCEC_Season_18
Chess match between Magnus Carlsen and Viswanathan Anand
Rh4+ Kc5 86. Kd1 Kb5 87. Kc2 Rg3 88. Ne4 Rg2+ 89. Kd3 a3 90. Nc3+ Kb6 91. Ra4 a2 92. Nxa2 Rg3+ 93. Kc2 Rg2+ 94. Kb3 Rg3+ 95. Nc3 Rh3 96. Rb4+ Kc7 97. Rg4
World_Chess_Championship_2014
Chess Match between Emanuel Lasker and Siegbert Tarrasch
Bb5 39.Qd1 Ra6 40.Rc2 Qe6 41.h3 Bd3 42.Rd2 f5 43.Kg3 Ra3 44.Kh2 a5 45.Qc1 Ra4 46.Qc3 Rb4 47.c6 Rc4 48.Qxa5 Rxc6 ½–½ French, McCutcheon (ECO C12) 1.e4 e6
World_Chess_Championship_1908
American chess player (born 1958)
15.Bxa6 Bxc3 16.bxc3 bxa6 17.c4 Re8 18.e5 Rb4 19.h3 Nh6 20.Qd3 a5 21.Ba3 Ra4 22.Qb3 Bd7 23.Rfe1 Nf5 24.g4 Nh4 25.Ng5 dxe5 26.Ne4 exf4 27.Nxc5 Rxa3 28
Peter_Winston_(chess_player)
Chess variant played on two boards
is now effectively 'pinned': 11...Q–c7/b6?? 12.Qd8#.) 11... Ne4/A 12. Bc7 Ra4/A 13. Ba6 Bg7 (The idea is 14...Rc4+ 15.c3/Nc3 Bxc3+/A.) 14. Bb5/A Rc4+ 15
Alice_chess
2020–2021 computer chess tournament
Ng5 58. Qg2 Nh7 59. Qe2 Bg5 60. Ng4 Ra4 61. Kg2 Rg8 62. Qd3 Ra8 63. Rcf2 Rf8 64. Rh1 Qb8 65. Ra1 Qc8 66. Bc3 Ra4 67. Rff1 Nf6 68. Nxf6 gxf6 69. Be1 Bxb5
TCEC_Season_20
1890-1891 at page 56, at https://books.google.com/books?id=nxooAAAAYAAJ&pg=RA4-PA56 (January 8, 2010); April 24, 1890, letter from H. W. McNeill (C&PS resident
List of White Pass and Yukon Route locomotives and cars
List_of_White_Pass_and_Yukon_Route_locomotives_and_cars
Model of IBM mainframe specially designed for use in air traffic control
Computer System (HCS) upgrade. The 3083s in turn were replaced with IBM 9672 RA4 parallel processing servers during the FAA's Host and Oceanic Computer System
IBM_9020
Chess match between Wilheilm Steinitz and Emanuel Lasker
Rg5 39.Nb4 Ree5 40.Rd4 Bb6 41.Rxf4+ Kg8 42.Nd3 Re2 43.Rd1 Be3 44.Rb4 b6 45.Ra4 a5 46.b4 d4 47.c4 Bd2 48.b5 Bc3 49.Rg1 Rd2 50.f4 Rxg4 51.Rxg4 Rxd3 52.c5
World_Chess_Championship_1894
Chess match between Magnus Carlsen and Sergey Karjakin
Nd5 30. Rg1 Bc7 31. Bg5 Re8 32. Qc4 Rb5 33. Qc2 Ra8 34. Bc4 Rba5 35. Bd2 Ra4 36. Qd3 Ra1 37. Rxa1 Rxa1+ 38. Kg2 Ne7 (diagram) 39. Bxf7+ Kxf7 40. Qc4+
World_Chess_Championship_2016
2001 RY3 — September 7, 2001 Socorro LINEAR · 3.6 km MPC · JPL 139788 2001 RA4 — September 8, 2001 Socorro LINEAR · 3.7 km MPC · JPL 139789 2001 RK5 —
List of minor planets: 139001–140000
List_of_minor_planets:_139001–140000
Brand of photographic printing hardware
The print is then processed using traditional photochemical means (usually RA4). After which the photographic print is handled just as any other photo-print
LightJet
cxb3 Bxe5 36.Kxe5 Ke7 37.a4 Rb8 38.Rxg5 Rxb3 39.Rg7+ Kd8 40.f4 Rb4 41.a5 Ra4 42.Kxe6 Re4+ 43.Kd6 Rd4+ 44.Kxc6 Rxf4 45.a6 Rc4+ 46.Kb5 Rc7 47.Rg8+ Kd7 48
MChess_Pro
2020 computer chess tournament
Qh5 gxh5 151. Rg7+ Ke8 152. Rxh7 Kd8 153. Rgg7 Na8 154. Rh8+ Kc7 155. Rhg8 Ra4 156. h7 Rxa5 157. h8=Q Nb6 158. Re8 Nc8 159. Rxc8+ Qxc8 160. Rxe7+ Kb8 161
TCEC_Season_19
Military unit
Installed in the Serra do Pilar Detach Batteries of the RA6, and in 1897 RA4 in 1899, both from Penafiel, and 5th Artillery Regiment of Viana do Castelo
5th Artillery Regiment (Portugal)
5th_Artillery_Regiment_(Portugal)
Australian artist and writer (born 1932)
Brengle, George. 1983, July. https://books.google.com/books?id=jB_G6kOxtX0C&pg=RA4-PA115 Brengle, George. 1981, July. Cruising World.https://books.google.com
Robin Hill (Australian artist)
Robin_Hill_(Australian_artist)
Chess endgame theory
46. Ra8+ Kh7 47. Ke6 Kg7 48. Ra7+ Kf8 49. Kf6 Kg8 50. Ra8+ Kh7 51. Rf8 Ra4! 52. Rf7+ Kg8 53. Re7 Kf8 54. Re6 Ra7 55. Rb6 Rf7+ 56. Kg5 Ra7 57. f6 Kf7
Rook and pawn versus rook endgame
Rook_and_pawn_versus_rook_endgame
only 16 tons, this meant that the BR Standard 4's route availability of RA4 was unrestricted and was able to work on all regions throughout Great Britain
BR Standard Class 4 2-6-0 76084
BR_Standard_Class_4_2-6-0_76084
English chess player (born 1986)
40. Kg2 Rc5 41. Ne2 a5 42. Ng3 Kf8 43. Kf1 Rc3 44. Kg2 Rc2 45. Kf1 c5 46. Ra4 Nc6 47. Nf5 Rh2 48.Nd6 Ke7 49. Nb7 Rc2 50. Na5 Na5 51. Ra5 Ke6 52. Ke1 f5
Lawrence_Trent
Military unit
January 8, 2010, https://books.google.com/books?id=3lFKAAAAMAAJ&q=militia&pg=RA4-PA6 ; See Also, Acts Passed at the Fourths Session of the General Assembly
5th Regiment, Arkansas State Troops
5th_Regiment,_Arkansas_State_Troops
Kg3 e6 23. h4 axb4 24. Rxb4 Qa5 25. h5 b5 26. Rb2 Qd8 27. Rh2 g5 28. fxg5 Ra4 29. Rhh1 Be8 30. Rhc1 Raa8 31. Bc5 Rxc5 32. Qxc5 Bf8 33. Qc7 Be7 34. Qxd8
TCEC_Season_16
QT100 — August 26, 1998 La Silla E. W. Elst · 3.3 km MPC · JPL 150196 1998 RA4 — September 14, 1998 Socorro LINEAR · 1.6 km MPC · JPL 150197 1998 RS9 —
List of minor planets: 150001–151000
List_of_minor_planets:_150001–151000
RE1 CTOE RL2, CSMIE, RTransp CIGeoE AM CM IPE RI14 RI13 RI15 RI10 RC3 RC6 RA4 RA5 RI1 Detach RI1 RI19 RE3 RT ES RMan EA ESE RAME RCms RAA1 UAGME Land Forces
Structure of the Portuguese Army
Structure_of_the_Portuguese_Army
2003 RT2 — September 1, 2003 Socorro LINEAR · 4.1 km MPC · JPL 128172 2003 RA4 — September 1, 2003 Socorro LINEAR · 4.6 km MPC · JPL 128173 2003 RD8 —
List of minor planets: 128001–129000
List_of_minor_planets:_128001–129000
RA4
RA4
RA4
RA4
RA4
RA4
RA4
RA4
RA4