Links
ECO Overview
Database:GAMEBASE *** Complete overview ECO *** ECO (perc) Tot + ½ - Perc Elo A00 Irregular Openings ( 1.4) 4090 1447 1410 1233 52% 2400 A01 Larsen Opening ( 0.3) 804 279 253 272 50% 2397 A02 From's Gambit and Bird's ( 0.2) 476 159 125 192 46% 2353 A03 Bird's Opening ( 0.1) 372 115 104 153 44% 2345 A04 Dutch System ( 2.6) 7892 2703 3171 2018 54% 2432 A05 Transitions into various ( 5.0) 15051 5058 6666 3327 55% 2445 A06 Zukertort Opening ( 0.8) 2376 767 1086 523 55% 2464 A07 Barcza System (with ( 0.7) 2067 688 890 489 54% 2431 A08 Barcza System ( 0.1) 237 88 87 62 55% 2418 A09 Reti Opening ( 0.6) 1676 590 710 376 56% 2439 A10 Dutch, Queen's Indian and ( 1.3) 4006 1393 1537 1076 53% 2425 A11 Reti Opening ( 0.4) 1267 454 538 275 57% 2432 A12 Reti Opening ( 0.0) 95 35 36 24 55% 2379 A13 Reti Opening ( 1.1) 3313 1135 1465 713 56% 2448 A14 Reti Opening ( 0.0) 73 33 29 11 65% 2397 A15 English counter King's ( 1.0) 3046 1072 1284 690 56% 2426 A16 English Opening ( 1.4) 4155 1642 1522 991 57% 2429 A17 English Opening ( 0.4) 1193 447 506 240 58% 2463 A18 English Opening ( 0.1) 237 109 76 52 62% 2401 A19 English Opening ( 0.0) 143 53 57 33 56% 2454 A20 English Opening ( 0.4) 1144 416 433 295 55% 2453 A21 English Opening ( 0.3) 952 351 321 280 53% 2445 A22 English Opening ( 0.5) 1653 517 692 444 52% 2471 A23 English Opening ( 0.0) 87 27 32 28 49% 2378 A24 English Opening ( 0.0) 14 8 4 2 71% 2434 A25 English Opening (Sicilian ( 0.2) 638 216 246 176 53% 2432 A26 English Opening (Sicilian ( 0.0) 87 23 43 21 51% 2467 A27 English Opening (Dutch ( 0.1) 249 85 97 67 53% 2433 A28 English Opening (Four ( 0.0) 79 28 28 23 53% 2415 A29 English Opening (Four ( 0.0) 79 24 40 15 55% 2475 A30 English Opening (Symmetrical ( 0.6) 1964 697 919 348 58% 2464 A31 English Opening (Symmetrical ( 0.0) 39 16 14 9 58% 2425 A32 English Opening (Symmetrical ( 0.0) 22 4 15 3 52% 2436 A33 English Opening (Symmetrical ( 0.0) 1 0 1 0 50% 2390 A34 English Opening (Symmetrical ( 0.2) 563 145 258 160 48% 2434 A35 English Opening (Symmetrical ( 0.1) 165 55 67 43 53% 2404 A36 English Opening (Botvinnik ( 0.1) 174 56 85 33 56% 2391 A37 English Opening (Symmetrical ( 0.0) 43 7 21 15 40% 2432 A38 English Opening (Symmetrical ( 0.0) 10 2 7 1 55% 2355 A39 English Opening (Symmetrical ( 0.0) 5 1 2 2 40% 2471 A40 Unusual Replies to 1.d4 ( 2.7) 8058 3087 2879 2092 56% 2418 A41 Modern Defence counter 1.d4 ( 0.9) 2708 982 994 732 54% 2453 A42 Modern Defence (with ( 0.0) 95 44 23 28 58% 2406 A43 Old Benoni ( 0.2) 751 297 229 225 54% 2385 A44 Old Benoni ( 0.1) 353 167 102 84 61% 2367 A45 Queen's Pawn Opening ( 1.1) 3223 1122 1000 1101 50% 2403 A46 Queen's Pawn Opening ( 2.8) 8517 2838 3418 2261 53% 2441 A47 Queen's Indian (without ( 0.2) 577 192 241 144 54% 2400 A48 King's Indian Defence ( 1.7) 5101 1833 1919 1349 54% 2419 A49 King's Indian Defence ( 0.4) 1196 372 503 321 52% 2442 A50 Queen's Indian (without ( 0.2) 728 309 256 163 60% 2417 A51 Budapest Defence (Fajarowicz ( 0.0) 136 58 41 37 57% 2347 A52 Budapest Defence (Main Line) ( 0.2) 479 216 142 121 59% 2358 A53 Old Indian Defence ( 0.5) 1434 567 502 365 57% 2411 A54 Old Indian Defence ( 0.1) 328 118 112 98 53% 2397 A55 Old Indian Defence ( 0.0) 100 55 26 19 68% 2396 A56 Old Indian Defence ( 0.9) 2625 996 861 768 54% 2413 A57 Volga Gambit ( 0.5) 1519 631 447 441 56% 2401 A58 Volga Gambit ( 0.2) 622 241 202 179 54% 2410 A59 Volga Gambit ( 0.0) 42 15 15 12 53% 2357 A60 Modern Benoni Defence ( 0.0) 133 55 36 42 54% 2389 A61 Benoni Defence ( 0.1) 265 124 78 63 61% 2403 A62 Benoni Defence ( 0.0) 52 25 9 18 56% 2386 A63 Benoni Defence ( 0.0) 10 1 4 5 30% 2555 A64 Benoni Defence ( 0.0) 1 1 0 0 100% 2225 A65 Benoni Defence ( 0.1) 241 121 57 63 62% 2387 A66 Benoni Defence (Central ( 0.0) 18 8 3 7 52% 2306 A67 Benoni Defence (Three Pawns' ( 0.1) 154 77 28 49 59% 2365 A68 Benoni Defence (Three Pawns' ( 0.0) 16 7 1 8 46% 2362 A69 Benoni Defence (Three Pawns' ( 0.0) 13 4 5 4 50% 2337 A70 Benoni Defence (Main Line) ( 0.0) 50 17 15 18 49% 2374 A71 Benoni Defence (Main ( 0.0) 35 13 10 12 51% 2413 A72 Benoni Defence (Main ( 0.0) 15 5 4 6 46% 2355 A73 Benoni Defence (Main Line) ( 0.0) 13 5 4 4 53% 2406 A74 Benoni Defence (Main Line) ( 0.0) 1 1 0 0 100% 2255 A75 Benoni Defence (Main Line) ( 0.0) 11 5 4 2 63% 2400 A76 Benoni Defence (Main Line) ( 0.0) 7 4 1 2 64% 2465 A77 Benoni Defence (Main Line) ( 0.0) 27 10 5 12 46% 2444 A78 Benoni Defence (Main Line) ( 0.0) 7 2 1 4 35% 2367 A79 Benoni Defence (Main Line) ( 0.0) 13 4 6 3 53% 2351 A80 Dutch Defence ( 0.4) 1187 498 366 323 57% 2399 A81 Dutch Defence (Leningrad ( 0.4) 1289 524 472 293 58% 2422 A82 Dutch Defence (Staunton ( 0.0) 57 23 11 23 50% 2337 A83 Dutch Defence (Staunton ( 0.0) 96 37 21 38 49% 2357 A84 Dutch Defence ( 0.1) 155 52 49 54 49% 2364 A85 Dutch Defence ( 0.1) 216 85 58 73 52% 2369 A86 Dutch Defence (Leningrad ( 0.0) 46 16 19 11 55% 2394 A87 Dutch Defence (Leningrad ( 0.0) 31 14 8 9 58% 2415 A88 Dutch Defence (Leningrad ( 0.0) 1 1 0 0 100% 2445 A89 Dutch Defence (Leningrad ( 0.0) 6 3 2 1 66% 2406 A90 Dutch Defence (Classical ( 0.0) 20 8 7 5 57% 2516 A91 Dutch Defence (Classical ( 0.0) 7 2 3 2 50% 0 A92 Dutch Defence (Stonewall) ( 0.0) 2 1 1 0 75% 2335 A98 Dutch Defence (Main Line) ( 0.0) 2 0 0 2 0% 2435 B00 Owen Defence, Nimzowitsch ( 0.9) 2706 1143 763 800 56% 2403 B01 Centre Counter ( 0.7) 2147 860 686 601 56% 2368 B02 Alekhine's Defence (Two ( 0.4) 1195 402 369 424 49% 2366 B03 Alekhine's Defence (Four ( 0.2) 686 267 208 211 54% 2372 B04 Alekhine's Defence (Modern ( 0.3) 867 357 315 195 59% 2407 B05 Alekhine's Defence (Modern ( 0.2) 703 303 226 174 59% 2402 B06 Modern Defence ( 1.4) 4363 1597 1419 1347 52% 2404 B07 Pirc Defence ( 0.7) 2208 910 698 600 57% 2403 B08 Pirc Defence ( 0.2) 695 246 282 167 55% 2434 B09 Pirc Defence (Three Pawns' ( 0.3) 811 323 279 209 57% 2418 B10 Caro Kann ( 0.5) 1595 574 637 384 55% 2417 B11 Caro Kann (Two Knights' ( 0.1) 273 96 106 71 54% 2427 B12 Caro Kann (Advance Variation) ( 1.0) 3061 1092 1196 773 55% 2441 B13 Caro Kann (Exchange ( 0.3) 947 324 385 238 54% 2387 B14 Caro Kann (Panov Attack) ( 0.3) 893 305 346 242 53% 2425 B15 Caro Kann (Flohr Variation) ( 0.1) 349 133 130 86 56% 2379 B16 Caro Kann (Nimzowitsch ( 0.1) 227 85 81 61 55% 2378 B17 Caro Kann ( 0.2) 677 212 322 143 55% 2455 B18 Caro Kann (Main Line) ( 0.2) 596 194 266 136 54% 2422 B19 Caro Kann (Main Line) ( 0.1) 242 71 125 46 55% 2437 B20 Sicilian Defence (Sicilian ( 0.5) 1521 502 466 553 48% 2407 B21 Sicilian Defence (Morra ( 0.4) 1092 369 282 441 46% 2383 B22 Sicilian Defence (Alapin ( 1.3) 4062 1265 1538 1259 50% 2411 B23 Sicilian Defence (Closed ( 1.0) 2928 996 992 940 50% 2415 B24 Sicilian Defence (Closed ( 0.2) 737 238 218 281 47% 2364 B25 Sicilian Defence (Closed ( 0.2) 511 146 190 175 47% 2411 B26 Sicilian Defence (Closed ( 0.1) 317 85 116 116 45% 2396 B27 Sicilian Defence (Early ( 0.2) 688 255 248 185 55% 2394 B28 Sicilian Defence (Early ( 0.1) 410 154 134 122 53% 2389 B29 Sicilian Defence ( 0.1) 431 184 132 115 58% 2362 B30 Sicilian Defence (Rossolimo ( 0.7) 2245 806 794 645 53% 2417 B31 Sicilian Defence (Rossolimo ( 0.4) 1148 467 406 275 58% 2413 B32 Sicilian Defence ( 0.9) 2645 908 986 751 52% 2430 B33 Sicilian Defence ( 1.5) 4542 1564 1624 1354 52% 2419 B34 Sicilian Defence ( 0.1) 284 100 78 106 48% 2352 B35 Sicilian Defence ( 0.1) 362 146 123 93 57% 2395 B36 Sicilian Defence (Maroczy ( 0.1) 334 100 181 53 57% 2450 B37 Sicilian Defence (Maroczy ( 0.0) 41 13 16 12 51% 2381 B38 Sicilian Defence (Maroczy ( 0.1) 266 99 120 47 59% 2383 B39 Sicilian Defence (Maroczy ( 0.1) 193 84 69 40 61% 2391 B40 Sicilian Defence (Classical ( 2.0) 6061 2144 2124 1793 52% 2423 B41 Sicilian Defence (Paulsen ( 0.2) 463 130 160 173 45% 2409 B42 Sicilian Defence (Paulsen ( 0.5) 1493 546 525 422 54% 2455 B43 Sicilian Defence (Paulsen ( 0.4) 1088 324 370 394 46% 2445 B44 Sicilian Defence (Paulsen ( 0.3) 761 240 290 231 50% 2436 B45 Sicilian Defence (Classical ( 0.1) 395 152 140 103 56% 2446 B46 Sicilian Defence (Paulsen ( 0.2) 631 206 264 161 53% 2456 B47 Sicilian Defence (Paulsen ( 0.2) 682 225 280 177 53% 2450 B48 Sicilian Defence (Paulsen ( 0.1) 206 68 72 66 50% 2452 B49 Sicilian Defence (Paulsen ( 0.0) 33 7 10 16 36% 2425 B50 Sicilian Defence (Variations ( 0.7) 2089 658 720 711 48% 2438 B51 Sicilian Defence (Rossolimo ( 0.2) 634 195 241 198 49% 2456 B52 Sicilian Defence (Rossolimo ( 0.3) 1055 260 538 257 50% 2461 B53 Sicilian Defence (Hungarian ( 0.2) 549 185 189 175 50% 2409 B54 Sicilian Defence (Rauzer ( 0.1) 325 132 102 91 56% 2409 B55 Sicilian Defence (Rauzer ( 0.0) 46 18 14 14 54% 2403 B56 Sicilian Defence (Deviations ( 0.3) 855 271 322 262 50% 2450 B57 Sicilian Defence (Sozin ( 0.2) 718 243 249 226 51% 2451 B58 Sicilian Defence ( 0.2) 469 157 154 158 49% 2434 B59 Sicilian Defence ( 0.0) 149 31 67 51 43% 2395 B60 Sicilian Defence (Rauzer ( 0.0) 136 34 56 46 45% 2455 B61 Sicilian Defence (Rauzer ( 0.0) 92 29 38 25 52% 2443 B62 Sicilian Defence (Rauzer ( 0.0) 57 23 16 18 54% 2452 B63 Sicilian Defence (Rauzer ( 0.1) 253 107 76 70 57% 2476 B64 Sicilian Defence (Rauzer ( 0.0) 97 37 36 24 56% 2484 B65 Sicilian Defence (Rauzer ( 0.0) 62 18 32 12 54% 2505 B66 Sicilian Defence (Rauzer ( 0.2) 514 154 237 123 53% 2499 B67 Sicilian Defence (Rauzer ( 0.1) 203 73 73 57 53% 2464 B68 Sicilian Defence (Rauzer ( 0.0) 33 15 13 5 65% 2464 B69 Sicilian Defence (Rauzer ( 0.0) 41 13 20 8 56% 2474 B70 Sicilian Defence (Dragon ( 0.3) 976 360 333 283 53% 2405 B71 Sicilian Defence (Dragon ( 0.0) 108 32 37 39 46% 2382 B72 Sicilian Defence (Dragon ( 0.1) 199 77 60 62 53% 2375 B73 Sicilian Defence (Dragon ( 0.0) 21 4 13 4 50% 2377 B74 Sicilian Defence (Dragon ( 0.0) 12 5 4 3 58% 2271 B75 Sicilian Defence (Modern ( 0.2) 621 282 198 141 61% 2438 B76 Sicilian Defence (Modern ( 0.1) 403 181 124 98 60% 2375 B77 Sicilian Defence (Modern ( 0.1) 189 91 47 51 60% 2386 B78 Sicilian Defence (Modern ( 0.1) 167 72 41 54 55% 2367 B79 Sicilian Defence (Modern ( 0.0) 1 0 0 1 0% 0 B80 Sicilian Defence ( 0.1) 273 97 81 95 50% 2449 B81 Sicilian Defence (Keres ( 0.1) 275 112 101 62 59% 2486 B82 Sicilian Defence ( 0.0) 145 47 60 38 53% 2469 B83 Sicilian Defence ( 0.1) 275 71 115 89 46% 2473 B84 Sicilian Defence ( 0.0) 100 33 25 42 45% 2441 B85 Sicilian Defence ( 0.0) 2 1 0 1 50% 0 B86 Sicilian Defence (Sozin ( 0.0) 48 16 13 19 46% 2392 B87 Sicilian Defence (Sozin ( 0.0) 14 5 5 4 53% 2471 B88 Sicilian Defence (Sozin ( 0.0) 3 2 1 0 83% 2272 B89 Sicilian Defence (Sozin ( 0.0) 3 1 1 1 50% 2532 B90 Sicilian Defence (Najdorf ( 0.8) 2549 982 800 767 54% 2460 B91 Sicilian Defence (Najdorf ( 0.1) 338 99 129 110 48% 2452 B92 Sicilian Defence (Najdorf ( 0.6) 1697 530 674 493 51% 2467 B93 Sicilian Defence (Najdorf ( 0.3) 1035 367 348 320 52% 2470 B94 Sicilian Defence (Najdorf ( 0.1) 196 68 58 70 49% 2446 B95 Sicilian Defence (Najdorf ( 0.1) 233 77 65 91 46% 2406 B96 Sicilian Defence (Najdorf ( 0.2) 456 156 141 159 49% 2454 B97 Sicilian Defence (Najdorf ( 0.1) 391 120 134 137 47% 2488 B98 Sicilian Defence (Najdorf ( 0.1) 183 73 40 70 50% 2391 B99 Sicilian Defence (Najdorf ( 0.1) 281 106 81 94 52% 2425 C00 French Defence (Unusual ( 0.7) 2256 872 692 692 53% 2374 C01 French Defence (Exchange ( 0.3) 900 229 432 239 49% 2420 C02 French Defence (Advance ( 0.5) 1645 657 434 554 53% 2372 C03 French Defence (Tarrasch ( 0.3) 985 382 387 216 58% 2429 C04 French Defence (Tarrasch ( 0.1) 322 147 99 76 61% 2405 C05 French Defence (Tarrasch ( 0.5) 1631 717 496 418 59% 2380 C06 French Defence (Tarrasch ( 0.2) 456 184 138 134 55% 2375 C07 French Defence (Tarrasch ( 0.4) 1309 403 635 271 55% 2464 C08 French Defence (Tarrasch ( 0.2) 520 148 268 104 54% 2485 C09 French Defence (Tarrasch ( 0.1) 281 89 143 49 57% 2468 C10 French Defence (Rubinstein ( 0.2) 751 300 310 141 60% 2423 C11 French Defence ( 0.4) 1343 478 541 324 55% 2457 C12 French Defence (MacCutcheon ( 0.1) 324 123 104 97 54% 2386 C13 French Defence (Classical ( 0.1) 275 135 70 70 61% 2394 C14 French Defence (Classical ( 0.1) 348 153 104 91 58% 2403 C15 French Defence (Winawer ( 0.3) 987 389 334 264 56% 2391 C16 French Defence (Winawer ( 0.4) 1231 495 402 334 56% 2434 C17 French Defence (Winawer ( 0.2) 665 280 183 202 55% 2403 C18 French Defence (Winawer ( 0.1) 405 188 124 93 61% 2371 C19 French Defence (Winawer ( 0.4) 1182 509 329 344 56% 2424 C20 Unusual Moves ( 0.0) 75 16 24 35 37% 2358 C21 Danish Gambit etc ( 0.1) 160 66 41 53 54% 2251 C22 Centre Gambit ( 0.0) 86 35 16 35 50% 2409 C23 Bishop's Opening ( 0.1) 193 84 55 54 57% 2361 C24 Bishop's Opening ( 0.2) 713 284 239 190 56% 2410 C25 Vienna Game ( 0.1) 446 169 139 138 53% 2385 C26 Vienna Game ( 0.2) 458 166 173 119 55% 2395 C27 Vienna Game ( 0.0) 56 17 20 19 48% 2394 C28 Vienna Game ( 0.0) 76 21 27 28 45% 2413 C29 Vienna Game ( 0.1) 215 80 65 70 52% 2390 C30 King's Gambit Declined ( 0.1) 264 117 65 82 56% 2349 C31 Falkbeer Counter Gambit ( 0.1) 187 71 44 72 49% 2365 C32 Falkbeer Counter Gambit ( 0.0) 72 36 19 17 63% 2349 C33 King's Gambit (Bishop's ( 0.1) 221 69 57 95 44% 2400 C34 King's Gambit (Knight's ( 0.1) 223 82 45 96 46% 2402 C35 King's Gambit (Cunningham ( 0.0) 91 30 25 36 46% 2440 C36 King's Gambit (Modern ( 0.0) 143 50 38 55 48% 2291 C37 Knight's Gambit (Muzio ( 0.0) 34 20 5 9 66% 2374 C38 King's Gambit (Philidor and ( 0.0) 38 20 4 14 57% 2298 C39 King's Gambit (Allgaier ( 0.0) 130 56 27 47 53% 2429 C40 Latvian Gambit ( 0.2) 564 280 86 198 57% 2202 C41 Philidor's Defence ( 0.3) 829 379 256 194 61% 2383 C42 Petroff's Defence ( 0.6) 1843 640 877 326 58% 2433 C43 Petroff's Defence ( 0.2) 565 256 224 85 65% 2457 C44 Scotch Gambit ( 0.3) 958 354 307 297 52% 2378 C45 Scotch Game ( 0.4) 1211 416 455 340 53% 2430 C46 Four Knight's Game (Unusual ( 0.1) 357 122 122 113 51% 2433 C47 Four Knight's Game ( 0.2) 478 145 232 101 54% 2428 C48 Four Knight's Game ( 0.1) 353 102 184 67 54% 2462 C49 Four Knight's Game (Metger ( 0.1) 359 111 155 93 52% 2446 C50 Giuoco Piano ( 0.2) 611 216 207 188 52% 2409 C51 Evans Gambit ( 0.1) 157 64 35 58 51% 2413 C52 Evans Gambit (Main Line) ( 0.0) 121 59 27 35 59% 2367 C53 Giuoco Piano ( 0.2) 543 212 175 156 55% 2433 C54 Giuoco Piano (Main Line) ( 0.0) 128 34 46 48 44% 2366 C55 Two Knight's Defence ( 0.3) 1008 338 348 322 50% 2420 C56 Two Knight's Defence ( 0.0) 86 19 29 38 38% 2384 C57 Two Knight's Defence ( 0.1) 193 58 46 89 41% 2383 C58 Two Knight's Defence ( 0.0) 84 34 17 33 50% 2368 C59 Two Knight's Defence ( 0.0) 116 44 35 37 53% 2435 C60 Ruy Lopez ( 0.2) 556 200 221 135 55% 2424 C61 Ruy Lopez (Bird's Defence) ( 0.1) 263 117 85 61 60% 2426 C62 Ruy Lopez (Old Steinitz ( 0.1) 188 93 58 37 64% 2390 C63 Ruy Lopez (Schliemann ( 0.2) 628 270 180 178 57% 2363 C64 Ruy Lopez (Classical Defence) ( 0.1) 445 191 155 99 60% 2387 C65 Ruy Lopez (Berlin Defence) ( 0.2) 573 221 204 148 56% 2448 C66 Ruy Lopez (Berlin Defence) ( 0.0) 133 57 49 27 61% 2387 C67 Ruy Lopez (Rio de Janeiro ( 0.2) 599 196 285 118 56% 2471 C68 Ruy Lopez (Exchange ( 0.1) 379 105 163 111 49% 2419 C69 Ruy Lopez (Exchange ( 0.3) 1024 315 455 254 52% 2456 C70 Ruy Lopez (Deviations in the ( 0.1) 348 156 94 98 58% 2394 C71 Ruy Lopez (Modern Steinitz ( 0.1) 160 50 55 55 48% 2410 C72 Ruy Lopez (Modern Steinitz ( 0.1) 431 183 147 101 59% 2441 C73 Ruy Lopez (Modern Steinitz ( 0.1) 270 91 99 80 52% 2443 C74 Ruy Lopez (Modern Steinitz ( 0.1) 195 74 67 54 55% 2432 C75 Ruy Lopez (Modern Steinitz ( 0.1) 259 106 97 56 59% 2468 C76 Ruy Lopez (Modern Steinitz ( 0.0) 79 20 45 14 53% 2556 C77 Ruy Lopez (Anderssen ( 0.4) 1321 471 457 393 52% 2413 C78 Ruy Lopez (Moeller Defence) ( 0.3) 1049 405 394 250 57% 2449 C79 Ruy Lopez (Russian Defence) ( 0.1) 212 88 85 39 61% 2433 C80 Ruy Lopez (Open Defence) ( 0.2) 630 214 278 138 56% 2471 C81 Ruy Lopez (Open ( 0.1) 179 66 79 34 58% 2447 C82 Ruy Lopez (Open ( 0.1) 309 99 120 90 51% 2488 C83 Ruy Lopez (Open Defence/Main ( 0.1) 197 75 88 34 60% 2440 C84 Ruy Lopez (Centre Attack) ( 0.1) 336 107 146 83 53% 2438 C85 Ruy Lopez (Steenwijker ( 0.2) 502 149 246 107 54% 2449 C86 Ruy Lopez (English ( 0.1) 304 110 113 81 54% 2460 C87 Ruy Lopez (Russian Defence ( 0.1) 168 75 63 30 63% 2525 C88 Ruy Lopez (Closed System) ( 1.5) 4641 1624 2134 883 57% 2481 C89 Ruy Lopez (Marshall Attack) ( 0.1) 419 145 180 94 56% 2481 C90 Ruy Lopez (Deviations from ( 0.0) 20 7 10 3 60% 2511 C91 Ruy Lopez (Deviations from ( 0.0) 39 11 12 16 43% 2495 C92 Ruy Lopez (Tchigorin ( 0.1) 258 73 133 52 54% 2472 C93 Ruy Lopez (Smyslov Variation) ( 0.0) 67 17 38 12 53% 2504 C94 Ruy Lopez (Breyer Variation) ( 0.0) 20 6 12 2 60% 2475 C95 Ruy Lopez (Breyer Variation) ( 0.0) 82 25 40 17 54% 2480 C96 Ruy Lopez (Deviations from ( 0.0) 89 19 48 22 48% 2490 C97 Ruy Lopez (Deviations from ( 0.0) 110 35 52 23 55% 2489 C98 Ruy Lopez (Tchigorin ( 0.0) 38 13 17 8 56% 2441 C99 Ruy Lopez (Tchigorin ( 0.0) 72 26 31 15 57% 2453 D00 Queen's Pawn Game ( 0.4) 1143 494 284 365 55% 2384 D01 Queen's Pawn Game ( 0.0) 103 36 38 29 53% 2396 D02 Queen's Pawn Game ( 1.4) 4375 1547 1767 1061 55% 2414 D03 Queen's Pawn Game ( 0.1) 166 58 57 51 52% 2377 D04 Queen's Pawn Game ( 0.1) 213 60 87 66 48% 2378 D05 Queen's Pawn Game (Colle ( 0.0) 104 40 38 26 56% 2292 D06 Queen's Pawn Gambit (Unusual ( 0.1) 308 146 95 67 62% 2342 D07 Queen's Pawn Gambit ( 0.1) 359 168 98 93 60% 2380 D08 Queen's Pawn Gambit (Albin ( 0.0) 118 60 24 34 61% 2275 D09 Queen's Pawn Gambit (Albin ( 0.0) 105 65 15 25 69% 2270 D10 Queen's Pawn Gambit (Slav ( 1.0) 2938 1043 1349 546 58% 2470 D11 Queen's Pawn Gambit (Slav ( 0.3) 840 335 337 168 59% 2412 D12 Queen's Pawn Gambit (Slav ( 0.1) 160 41 84 35 51% 2497 D13 Queen's Pawn Gambit (Slav ( 0.0) 105 23 74 8 57% 2456 D14 Queen's Pawn Gambit (Slav ( 0.0) 99 12 83 4 54% 2449 D15 Queen's Pawn Gambit (Slav ( 0.5) 1570 629 599 342 59% 2463 D16 Queen's Pawn Gambit (Slav ( 0.0) 146 58 51 37 57% 2430 D17 Queen's Pawn Gambit (Slav ( 0.1) 250 103 101 46 61% 2452 D18 Queen's Pawn Gambit (Slav ( 0.0) 40 18 15 7 63% 2413 D19 Queen's Pawn Gambit (Slav ( 0.1) 367 134 165 68 58% 2461 D20 Queen's Gambit Accepted ( 0.4) 1291 481 504 306 56% 2478 D21 Queen's Gambit Accepted ( 0.1) 237 82 90 65 53% 2434 D22 Queen's Gambit Accepted ( 0.1) 405 111 201 93 52% 2480 D23 Queen's Gambit Accepted ( 0.0) 84 31 28 25 53% 2411 D24 Queen's Gambit Accepted ( 0.1) 238 89 91 58 56% 2426 D25 Queen's Gambit Accepted ( 0.1) 316 113 146 57 58% 2423 D26 Queen's Gambit Accepted ( 0.1) 203 77 89 37 59% 2449 D27 Queen's Gambit Accepted ( 0.1) 245 70 139 36 56% 2467 D28 Queen's Gambit Accepted ( 0.0) 45 21 20 4 68% 2436 D29 Queen's Gambit Accepted ( 0.0) 72 26 24 22 52% 2447 D30 Queen's Gambit (without Nc3) ( 0.7) 2030 768 859 403 58% 2430 D31 Queen's Gambit (Semi-Slav ( 0.7) 2196 757 918 521 55% 2445 D32 Queen's Gambit (Tarrasch ( 0.1) 375 152 117 106 56% 2353 D33 Queen's Gambit (Tarrasch ( 0.0) 81 30 28 23 54% 2443 D34 Queen's Gambit (Tarrasch ( 0.1) 286 113 120 53 60% 2418 D35 Queen's Gambit (Exchange ( 0.2) 458 200 188 70 64% 2390 D36 Queen's Gambit (Exchange ( 0.0) 37 17 14 6 64% 2441 D37 Queen's Gambit (5.Bf4) ( 0.1) 342 118 145 79 55% 2440 D38 Queen's Gambit (Ragozin ( 0.0) 16 8 6 2 68% 2439 D40 Queen's Gambit ( 0.0) 16 5 9 2 59% 2402 D41 Queen's Gambit ( 0.0) 27 15 9 3 72% 2326 D42 Queen's Gambit ( 0.0) 9 7 1 1 83% 2365 D43 Queen's Gambit (Anti-Meran ( 0.0) 30 12 14 4 63% 2357 D44 Queen's Gambit (Anti-Meran ( 0.0) 2 1 1 0 75% 0 D45 Queen's Gambit (Anti-Meran ( 0.0) 29 18 5 6 70% 2309 D46 Queen's Gambit (Semi-Slav ( 0.0) 8 3 3 2 56% 0 D47 Queen's Gambit (Meran ( 0.0) 3 1 1 1 50% 2371 D48 Queen's Gambit (Meran ( 0.0) 3 1 2 0 66% 2357 D49 Queen's Gambit (Meran ( 0.0) 2 0 2 0 50% 2260 D50 Queen's Gambit (Canal's ( 0.0) 120 43 50 27 56% 2347 D51 Queen's Gambit (Cambridge ( 0.1) 295 130 102 63 61% 2371 D52 Queen's Gambit (Cambridge ( 0.0) 63 23 20 20 52% 2400 D53 Queen's Gambit (Main Line - ( 0.2) 535 197 235 103 58% 2402 D54 Queen's Gambit (Main Line - ( 0.0) 34 11 21 2 63% 2496 D55 Queen's Gambit (Main Line - ( 0.0) 65 17 30 18 49% 2384 D56 Queen's Gambit (Lasker's ( 0.0) 18 4 12 2 55% 2421 D57 Queen's Gambit (Lasker's ( 0.0) 7 3 4 0 71% 0 D58 Queen's Gambit (Tartakover's ( 0.0) 33 8 21 4 56% 2466 D59 Queen's Gambit (Tartakover's ( 0.0) 13 1 8 4 38% 2488 D60 Queen's Gambit (Main Line) ( 0.0) 26 9 13 4 59% 2308 D61 Queen's Gambit (Main Line ( 0.0) 22 9 7 6 56% 2407 D62 Queen's Gambit (Main Line ( 0.0) 10 3 6 1 60% 2290 D63 Queen's Gambit (Main Line ( 0.0) 27 10 12 5 59% 2438 D64 Queen's Gambit (Fight for ( 0.0) 5 4 0 1 80% 2437 D65 Queen's Gambit (Fight for ( 0.0) 1 1 0 0 100% 0 D66 Queen's Gambit (Extended ( 0.0) 10 4 5 1 65% 2320 D67 Queen's Gambit (Main Line - ( 0.0) 14 0 10 4 35% 2358 D68 Queen's Gambit (Main Line - ( 0.0) 10 3 6 1 60% 2293 D69 Queen's Gambit (Main Line - ( 0.0) 5 0 5 0 50% 2413 E00 Catalan System ( 1.2) 3567 1347 1442 778 57% 2441 E01 Catalan System ( 0.1) 169 71 65 33 61% 2455 E02 Catalan System ( 0.0) 72 20 39 13 54% 2461 E03 Catalan System ( 0.0) 23 6 15 2 58% 2487 E04 Catalan System ( 0.1) 183 70 80 33 60% 2490 E05 Catalan System ( 0.0) 9 3 5 1 61% 2426 E06 Catalan System ( 0.1) 265 96 127 42 60% 2483 E07 Catalan System ( 0.0) 16 6 6 4 56% 2478 E08 Catalan System ( 0.0) 22 14 7 1 79% 2458 E09 Catalan System ( 0.0) 10 4 5 1 65% 2401 E10 Blumenfeld Counter Gambit ( 1.3) 3948 1243 1845 860 54% 2485 E11 Bogo Indian Defence ( 0.6) 1940 618 918 404 55% 2470 E12 Queen's Indian Defence ( 0.7) 2136 697 941 498 54% 2501 E13 Queen's Indian Defence ( 0.0) 14 6 4 4 57% 2492 E14 Queen's Indian Defence (4.e3) ( 0.1) 436 133 200 103 53% 2482 E15 Queen's Indian Defence (Main ( 0.6) 1678 495 873 310 55% 2520 E16 Queen's Indian Defence (Main ( 0.1) 242 81 114 47 57% 2451 E17 Queen's Indian Defence (Main ( 0.1) 375 130 176 69 58% 2484 E18 Queen's Indian Defence (Main ( 0.1) 304 53 207 44 51% 2500 E19 Queen's Indian Defence (Main ( 0.1) 234 40 167 27 52% 2537 E20 Nimzo Indian Defence ( 0.2) 739 254 275 210 52% 2440 E21 Nimzo Indian Defence (4.Nf3) ( 0.2) 677 226 281 170 54% 2454 E22 Nimzo Indian Defence (4.Qb3) ( 0.0) 97 29 35 33 47% 2470 E23 Nimzo Indian Defence (4.Qb3) ( 0.0) 49 18 21 10 58% 2466 E24 Nimzo Indian Defence ( 0.1) 182 63 51 68 48% 2434 E25 Nimzo Indian Defence ( 0.0) 68 26 27 15 58% 2446 E26 Nimzo Indian Defence ( 0.0) 149 52 44 53 49% 2405 E27 Nimzo Indian Defence ( 0.0) 46 19 13 14 55% 2353 E28 Nimzo Indian Defence ( 0.0) 12 2 4 6 33% 2197 E30 Nimzo Indian Defence ( 0.1) 387 133 133 121 51% 2433 E31 Nimzo Indian Defence ( 0.0) 79 27 30 22 53% 2473 E32 Nimzo Indian Defence (4.Qc2) ( 0.4) 1233 371 544 318 52% 2493 E33 Nimzo Indian Defence (4.Qc2) ( 0.1) 191 75 73 43 58% 2413 E34 Nimzo Indian Defence (4.Qc2) ( 0.1) 155 42 77 36 51% 2527 E35 Nimzo Indian Defence (4.Qc2) ( 0.1) 155 49 76 30 56% 2515 E36 Nimzo Indian Defence (4.Qc2) ( 0.0) 31 15 10 6 64% 2452 E37 Nimzo Indian Defence (4.Qc2) ( 0.0) 84 31 41 12 61% 2514 E38 Nimzo Indian Defence (4.Qc2) ( 0.1) 420 170 150 100 58% 2455 E39 Nimzo Indian Defence (4.Qc2) ( 0.1) 316 106 155 55 58% 2458 E40 Nimzo Indian Defence ( 0.1) 296 133 105 58 62% 2414 E41 Nimzo Indian Defence ( 0.4) 1200 350 524 326 51% 2475 E42 Nimzo Indian Defence ( 0.1) 431 151 185 95 56% 2460 E43 Nimzo Indian Defence ( 0.1) 321 89 124 108 47% 2451 E44 Nimzo Indian Defence ( 0.1) 239 91 96 52 58% 2457 E45 Nimzo Indian Defence ( 0.1) 206 74 76 56 54% 2465 E46 Nimzo Indian Defence ( 0.1) 358 98 154 106 48% 2475 E47 Nimzo Indian Defence (Normal ( 0.2) 500 178 214 108 57% 2482 E48 Nimzo Indian Defence (Normal ( 0.3) 826 252 396 178 54% 2490 E49 Nimzo Indian Defence (Normal ( 0.0) 94 34 34 26 54% 2506 E50 Nimzo Indian Defence (Normal ( 0.0) 74 24 34 16 55% 2578 E51 Nimzo Indian Defence (Normal ( 0.0) 23 6 13 4 54% 2543 E52 Nimzo Indian Defence (Normal ( 0.0) 4 1 2 1 50% 0 E53 Nimzo Indian Defence (Normal ( 0.0) 4 3 1 0 87% 2430 E54 Nimzo Indian Defence (Normal ( 0.0) 2 2 0 0 100% 2440 E55 Nimzo Indian Defence (Normal ( 0.0) 5 1 1 3 30% 2585 E58 Nimzo Indian Defence (Normal ( 0.0) 3 1 1 1 50% 2365 E59 Nimzo Indian Defence (Normal ( 0.0) 6 1 2 3 33% 2135 E60 King's Indian Defence ( 1.0) 3020 1065 1253 702 56% 2451 E61 King's Indian Defence ( 1.9) 5875 2018 2378 1479 54% 2442 E62 King's Indian Defence ( 0.0) 12 9 1 2 79% 2235 E63 King's Indian Defence ( 0.0) 2 0 2 0 50% 0 E64 King's Indian Defence ( 0.0) 2 1 1 0 75% 2215 E66 King's Indian Defence ( 0.0) 1 0 0 1 0% 0 E67 King's Indian Defence ( 0.0) 5 1 2 2 40% 2257 E68 King's Indian Defence ( 0.0) 4 2 1 1 62% 2360 E69 King's Indian Defence ( 0.0) 4 1 3 0 62% 2426 E70 King's Indian Defence (White ( 0.4) 1357 551 391 415 55% 2405 E71 King's Indian Defence (5.h3) ( 0.1) 313 155 94 64 64% 2424 E72 King's Indian Defence ( 0.0) 77 32 25 20 57% 2377 E73 King's Indian Defence ( 0.6) 1952 771 669 512 56% 2425 E74 King's Indian Defence ( 0.1) 287 129 93 65 61% 2401 E75 King's Indian Defence ( 0.0) 81 31 33 17 58% 2409 E76 King's Indian Defence (Four ( 0.2) 598 252 166 180 56% 2394 E77 King's Indian Defence (Four ( 0.0) 17 9 4 4 64% 2270 E78 King's Indian Defence (Four ( 0.0) 1 0 0 1 0% 0 E79 King's Indian Defence (Four ( 0.0) 4 1 0 3 25% 2210 E80 King's Indian Defence ( 0.1) 444 189 136 119 57% 2419 E81 King's Indian Defence ( 0.3) 1024 386 371 267 55% 2449 E82 King's Indian Defence ( 0.0) 125 47 44 34 55% 2411 E83 King's Indian Defence ( 0.1) 249 83 88 78 51% 2400 E84 King's Indian Defence ( 0.0) 149 59 51 39 56% 2398 E85 King's Indian Defence ( 0.0) 86 42 24 20 62% 2355 E86 King's Indian Defence ( 0.0) 130 48 53 29 57% 2469 E87 King's Indian Defence ( 0.1) 159 72 44 43 59% 2425 E88 King's Indian Defence ( 0.1) 168 76 49 43 59% 2449 E89 King's Indian Defence ( 0.0) 11 5 1 5 50% 2440 E90 King's Indian Defence ( 0.1) 276 123 73 80 57% 2415 E91 King's Indian Defence ( 0.1) 389 152 125 112 55% 2404 E92 King's Indian Defence ( 0.2) 581 197 259 125 56% 2432 E93 King's Indian Defence ( 0.0) 47 20 15 12 58% 2376 E94 King's Indian Defence ( 0.1) 267 119 90 58 61% 2438 E95 King's Indian Defence ( 0.0) 42 13 20 9 54% 2419 E96 King's Indian Defence ( 0.0) 6 2 3 1 58% 2375 E97 King's Indian Defence ( 0.2) 580 217 187 176 53% 2456 E98 King's Indian Defence ( 0.1) 269 111 81 77 56% 2422