| 1 | # The theme of this test suite is how to play inside an already living |
| 2 | # group to turn potential territory into a seki. A typical example |
| 3 | # would be this corner group |
| 4 | # |
| 5 | # |OOOOOO |
| 6 | # |XXXXXO |
| 7 | # |..a.XO |
| 8 | # |....XO |
| 9 | # +------ |
| 10 | # |
| 11 | # where white can make seki in sente by playing at 'a'. There are also |
| 12 | # numerous test cases to check the followup moves to get a seki. In |
| 13 | # many cases one or both players have the option to make ko for life |
| 14 | # and death of the entire corner (whereby black would get territory |
| 15 | # points if winning). Is is generally assumed in this test suite that |
| 16 | # white tries to achieve ko while black tries to avoid it, since the |
| 17 | # ko in most cases is favorable to white. |
| 18 | |
| 19 | loadsgf games/seki04.sgf |
| 20 | 1 reg_genmove white |
| 21 | #? [B2|B1|A2] |
| 22 | # B2 also secures life but leaves a much bigger ko threat behind. |
| 23 | 2 reg_genmove black |
| 24 | #? [A2|B1] |
| 25 | |
| 26 | play white B2 |
| 27 | # Tenuki lets white make ko with A1 |
| 28 | 3 reg_genmove black |
| 29 | #? [B1|A2] |
| 30 | |
| 31 | play black B1 |
| 32 | 4 reg_genmove white |
| 33 | #? [A2] |
| 34 | |
| 35 | undo |
| 36 | undo |
| 37 | play white B1 |
| 38 | 5 reg_genmove black |
| 39 | #? [A2] |
| 40 | 6 reg_genmove white |
| 41 | #? [A2] |
| 42 | |
| 43 | play black A2 |
| 44 | 7 reg_genmove white |
| 45 | #? [B2]* |
| 46 | |
| 47 | undo |
| 48 | # White kills through bent four in the corner. |
| 49 | play black B2 |
| 50 | 8 reg_genmove white |
| 51 | #? [A2] |
| 52 | |
| 53 | |
| 54 | loadsgf games/seki05.sgf |
| 55 | # C2 gives a sente seki, while B1 gives a gote seki. Other moves fail. |
| 56 | 101 reg_genmove white |
| 57 | #? [C2] |
| 58 | 102 reg_genmove black |
| 59 | #? [C2|C1|B2|B1] |
| 60 | |
| 61 | play white C2 |
| 62 | # Only B1 and A2 (oddly enough) avoids giving white a ko option. |
| 63 | 103 reg_genmove black |
| 64 | #? [B1|A2]* |
| 65 | |
| 66 | play black B1 |
| 67 | 104 reg_genmove white |
| 68 | #? [B2] |
| 69 | |
| 70 | play white B2 |
| 71 | 105 reg_genmove black |
| 72 | #? [C1] |
| 73 | |
| 74 | play black C1 |
| 75 | 106 reg_genmove white |
| 76 | #? [A2] |
| 77 | |
| 78 | play white A2 |
| 79 | 107 reg_genmove black |
| 80 | #? [D1] |
| 81 | |
| 82 | undo |
| 83 | undo |
| 84 | play black A2 |
| 85 | 108 reg_genmove white |
| 86 | #? [C1] |
| 87 | |
| 88 | undo |
| 89 | undo |
| 90 | undo |
| 91 | play black B2 |
| 92 | 109 reg_genmove white |
| 93 | #? [B1] |
| 94 | |
| 95 | undo |
| 96 | play black C1 |
| 97 | 110 reg_genmove white |
| 98 | #? [B1] |
| 99 | |
| 100 | undo |
| 101 | undo |
| 102 | play white B1 |
| 103 | 111 reg_genmove black |
| 104 | #? [C2]* |
| 105 | |
| 106 | undo |
| 107 | play white C1 |
| 108 | 112 reg_genmove black |
| 109 | #? [B1]* |
| 110 | |
| 111 | |
| 112 | loadsgf games/seki06.sgf |
| 113 | 201 reg_genmove white |
| 114 | #? [B2] |
| 115 | 202 reg_genmove black |
| 116 | #? [B2] |
| 117 | |
| 118 | # Both A2 and B1 lead to seki. Strictly speaking A2 is a better move |
| 119 | # since it leaves black the option to take sente and let white make a |
| 120 | # thousand-year ko. For now we accept both. |
| 121 | play white B2 |
| 122 | 203 reg_genmove black |
| 123 | #? [A2|B1] |
| 124 | |
| 125 | play black A2 |
| 126 | 204 reg_genmove white |
| 127 | #? [B1] |
| 128 | |
| 129 | # White gets a thousand-year ko if black plays tenuki. |
| 130 | play white B1 |
| 131 | 205 reg_genmove black |
| 132 | #? [C1|C2] |
| 133 | |
| 134 | # A1 makes a clean seki with no ko aji. |
| 135 | undo |
| 136 | play white C1 |
| 137 | 206 reg_genmove black |
| 138 | #? [A1] |
| 139 | |
| 140 | undo |
| 141 | undo |
| 142 | play black B1 |
| 143 | 207 reg_genmove white |
| 144 | #? [A2] |
| 145 | |
| 146 | play white A2 |
| 147 | 208 reg_genmove black |
| 148 | #? [C2] |
| 149 | 209 reg_genmove white |
| 150 | #? [A3] |
| 151 | |
| 152 | undo |
| 153 | undo |
| 154 | undo |
| 155 | play white B1 |
| 156 | 210 reg_genmove black |
| 157 | #? [B2] |
| 158 | |
| 159 | |
| 160 | loadsgf games/seki07.sgf |
| 161 | 301 reg_genmove white |
| 162 | #? [B2] |
| 163 | 302 reg_genmove black |
| 164 | #? [B2] |
| 165 | |
| 166 | play white B2 |
| 167 | 303 reg_genmove black |
| 168 | #? [A2|C1|C2] |
| 169 | |
| 170 | play black A2 |
| 171 | 304 reg_genmove white |
| 172 | #? [C1] |
| 173 | |
| 174 | # Black can start ko with B1 if desperate. |
| 175 | play white C1 |
| 176 | 305 reg_genmove black |
| 177 | #? [C2] |
| 178 | |
| 179 | play black C2 |
| 180 | 306 reg_genmove white |
| 181 | #? [B1] |
| 182 | |
| 183 | # Now black can live with territory. |
| 184 | undo |
| 185 | undo |
| 186 | play white B1 |
| 187 | 307 reg_genmove black |
| 188 | #? [C1] |
| 189 | |
| 190 | undo |
| 191 | undo |
| 192 | play black C1 |
| 193 | 308 reg_genmove white |
| 194 | #? [A2] |
| 195 | |
| 196 | # Tenuki is okay. What remains is a double-sided ko threat (0 points |
| 197 | # double sente). |
| 198 | play white A2 |
| 199 | 309 reg_genmove black |
| 200 | #? [B1|C2|C9] |
| 201 | |
| 202 | play black B1 |
| 203 | 310 reg_genmove white |
| 204 | #? [C2] |
| 205 | |
| 206 | undo |
| 207 | play black C2 |
| 208 | 311 reg_genmove white |
| 209 | #? [B1] |
| 210 | |
| 211 | # A2 also makes seki, but costs a prisoner. |
| 212 | undo |
| 213 | undo |
| 214 | undo |
| 215 | play black C2 |
| 216 | 312 reg_genmove white |
| 217 | #? [B1|C1] |
| 218 | |
| 219 | play white B1 |
| 220 | 313 reg_genmove black |
| 221 | #? [C1|A2] |
| 222 | |
| 223 | play black C1 |
| 224 | 314 reg_genmove white |
| 225 | #? [A2] |
| 226 | |
| 227 | undo |
| 228 | play black A2 |
| 229 | 315 reg_genmove white |
| 230 | #? [C1] |
| 231 | |
| 232 | undo |
| 233 | undo |
| 234 | play white C1 |
| 235 | 316 reg_genmove black |
| 236 | #? [A2] |
| 237 | |
| 238 | |
| 239 | loadsgf games/seki08.sgf |
| 240 | 401 reg_genmove white |
| 241 | #? [B1] |
| 242 | # Most moves secure territory but C1 and C2 are most natural. We also |
| 243 | # allow B1. |
| 244 | 402 reg_genmove black |
| 245 | #? [C1|C2|B1] |
| 246 | |
| 247 | # C1 and C2 both secure seki in sente, but C1 is one prisoner better. |
| 248 | # B2 leaves white the option to make ko. |
| 249 | play white B1 |
| 250 | 403 reg_genmove black |
| 251 | #? [C1|C2]* |
| 252 | |
| 253 | play black C1 |
| 254 | 404 reg_genmove white |
| 255 | #? [A2|D1] |
| 256 | |
| 257 | play white A2 |
| 258 | 405 reg_genmove black |
| 259 | #? [C2] |
| 260 | |
| 261 | play black C2 |
| 262 | 406 reg_genmove white |
| 263 | #? [D1|E1] |
| 264 | |
| 265 | undo |
| 266 | undo |
| 267 | play white D1 |
| 268 | 407 reg_genmove black |
| 269 | #? [C2|E1] |
| 270 | |
| 271 | play black C2 |
| 272 | 408 reg_genmove white |
| 273 | #? [A2] |
| 274 | |
| 275 | undo |
| 276 | play black E1 |
| 277 | 409 reg_genmove white |
| 278 | #? [A2] |
| 279 | |
| 280 | play white A2 |
| 281 | 410 reg_genmove black |
| 282 | #? [C2] |
| 283 | |
| 284 | undo |
| 285 | undo |
| 286 | undo |
| 287 | undo |
| 288 | |
| 289 | # D1 and A2 also give seki but are one point worse. |
| 290 | play black C2 |
| 291 | 411 reg_genmove white |
| 292 | #? [C1] |
| 293 | |
| 294 | # D1 and A2 are miai to get seki. Black can also opt for a difficult |
| 295 | # ko by playing B2, but this is usually not a good idea. Tenuki |
| 296 | # suffices for seki and leaves a big mutual ko threat. |
| 297 | play white C1 |
| 298 | 412 reg_genmove black |
| 299 | #? [D1|A2|C9] |
| 300 | |
| 301 | play black D1 |
| 302 | 413 reg_genmove white |
| 303 | #? [A2] |
| 304 | |
| 305 | loadsgf games/seki09.sgf |
| 306 | 501 reg_genmove white |
| 307 | #? [B1]* |
| 308 | 502 reg_genmove black |
| 309 | #? [C1]* |
| 310 | |
| 311 | play white B1 |
| 312 | 503 reg_genmove black |
| 313 | #? [C1] |
| 314 | |
| 315 | play black C1 |
| 316 | 504 reg_genmove white |
| 317 | #? [A2] |
| 318 | |
| 319 | loadsgf games/seki10.sgf |
| 320 | 601 reg_genmove white |
| 321 | #? [B1] |
| 322 | 602 reg_genmove black |
| 323 | #? [C1|B1] |
| 324 | |
| 325 | # B2 gives a hopeless ko. |
| 326 | play white B1 |
| 327 | 603 reg_genmove black |
| 328 | #? [C1] |
| 329 | |
| 330 | play black C1 |
| 331 | 604 reg_genmove white |
| 332 | #? [A2] |
| 333 | |
| 334 | |
| 335 | loadsgf games/seki11.sgf |
| 336 | 701 reg_genmove white |
| 337 | #? [C1] |
| 338 | 702 reg_genmove black |
| 339 | #? [C1|B1|B2] |
| 340 | |
| 341 | play white C1 |
| 342 | 703 reg_genmove black |
| 343 | #? [B2] |
| 344 | |
| 345 | play black B2 |
| 346 | 704 reg_genmove white |
| 347 | #? [B1] |
| 348 | |
| 349 | |
| 350 | loadsgf games/seki12.sgf |
| 351 | 801 reg_genmove white |
| 352 | #? [B2] |
| 353 | 802 reg_genmove black |
| 354 | #? [B2] |
| 355 | |
| 356 | # C2 is the best way to make seki since it leaves ko aji in black's |
| 357 | # favor unless white accepts gote. |
| 358 | play white B2 |
| 359 | 803 reg_genmove black |
| 360 | #? [C2] |
| 361 | |
| 362 | # B1 also makes seki but white definitely ends in gote. |
| 363 | play black C2 |
| 364 | 804 reg_genmove white |
| 365 | #? [C1] |
| 366 | |
| 367 | # After A2 black has the option to start ko with B1, unless white |
| 368 | # takes gote and fills at B1. Sooner or later that may be necessary. |
| 369 | play white C1 |
| 370 | 805 reg_genmove black |
| 371 | #? [A2] |
| 372 | |
| 373 | undo |
| 374 | play white B1 |
| 375 | # A2 is one point bigger than C1 regardless of scoring method. |
| 376 | 806 reg_genmove black |
| 377 | #? [A2|C1] |
| 378 | |
| 379 | play black C1 |
| 380 | # A3 is one point bigger than A2 under japanese scoring and a half |
| 381 | # point bigger under chinese scoring. |
| 382 | 807 reg_genmove white |
| 383 | #? [A3|A2] |
| 384 | |
| 385 | undo |
| 386 | undo |
| 387 | undo |
| 388 | |
| 389 | # B1 and A2 give gote seki. |
| 390 | play black C1 |
| 391 | 808 reg_genmove white |
| 392 | #? [C2] |
| 393 | |
| 394 | play white C2 |
| 395 | 809 reg_genmove black |
| 396 | #? [B1] |
| 397 | |
| 398 | # A2 is gote seki and may occasionally be better than allowing black |
| 399 | # to initiate a ko. |
| 400 | play black B1 |
| 401 | 810 reg_genmove white |
| 402 | #? [A3] |
| 403 | |
| 404 | # A1 secures seki, removing white's ko aji. |
| 405 | play white A3 |
| 406 | 811 reg_genmove black |
| 407 | #? [A1] |
| 408 | |
| 409 | |
| 410 | loadsgf games/seki13.sgf |
| 411 | 901 reg_genmove white |
| 412 | #? [B2] |
| 413 | 902 reg_genmove black |
| 414 | #? [B2] |
| 415 | |
| 416 | # Black probably have more moves to make seki in sente but C2 looks most |
| 417 | # natural. C1 is also good enough. B1 suffices to make sente seki as well |
| 418 | # but loses one point compared to C2 or C1. |
| 419 | play white B2 |
| 420 | 903 reg_genmove black |
| 421 | #? [C2|C1]* |
| 422 | |
| 423 | play black C2 |
| 424 | 904 reg_genmove white |
| 425 | #? [B3] |
| 426 | |
| 427 | # B1 gives ko or seki in gote. Tenuki also leaves a seki but compared |
| 428 | # to C1 the latter is 1 point double sente. |
| 429 | play white B3 |
| 430 | 905 reg_genmove black |
| 431 | #? [C1]* |
| 432 | |
| 433 | play black C1 |
| 434 | 906 reg_genmove white |
| 435 | #? [B1] |
| 436 | |
| 437 | # Black can play tenuki and still have seki but since A3 is one point |
| 438 | # double sente there is no reason to wait. |
| 439 | play white B1 |
| 440 | 907 reg_genmove black |
| 441 | #? [A3]* |
| 442 | |
| 443 | play black A3 |
| 444 | 908 reg_genmove white |
| 445 | #? [A2] |
| 446 | |
| 447 | # 1 point double sente, just like 907. |
| 448 | undo |
| 449 | 909 reg_genmove white |
| 450 | #? [A3]* |
| 451 | |
| 452 | play white A3 |
| 453 | 910 reg_genmove black |
| 454 | #? [A1|A2] |
| 455 | |
| 456 | # One point to pick up the A1 stone under Japanese rules. |
| 457 | play black A1 |
| 458 | play black C9 |
| 459 | 911 reg_genmove white |
| 460 | #? [A2] |
| 461 | |
| 462 | # After white C1 black can make ko with A2 or seki in gote with D1. |
| 463 | undo |
| 464 | undo |
| 465 | undo |
| 466 | undo |
| 467 | undo |
| 468 | play black B1 |
| 469 | 912 reg_genmove white |
| 470 | #? [C1] |
| 471 | |
| 472 | # White C1 was a mistake. Black makes life with territory at B3. |
| 473 | undo |
| 474 | undo |
| 475 | play white C1 |
| 476 | 913 reg_genmove black |
| 477 | #? [B3] |
| 478 | |
| 479 | |
| 480 | # Black should play B2. A2 and B1 leave an unnecessary ko threat. |
| 481 | loadsgf games/seki14.sgf |
| 482 | 1001 reg_genmove white |
| 483 | #? [B2] |
| 484 | 1002 reg_genmove black |
| 485 | #? [B2] |
| 486 | |
| 487 | |
| 488 | loadsgf games/seki15.sgf |
| 489 | 1101 reg_genmove white |
| 490 | #? [D1]* |
| 491 | 1102 reg_genmove black |
| 492 | #? [C1|C2|D2]* |
| 493 | |
| 494 | play white D1 |
| 495 | 1103 reg_genmove black |
| 496 | #? [E2] |
| 497 | |
| 498 | play black E2 |
| 499 | 1104 reg_genmove white |
| 500 | #? [B1]* |
| 501 | |
| 502 | play white B1 |
| 503 | 1105 reg_genmove black |
| 504 | #? [C2] |
| 505 | |
| 506 | play black C2 |
| 507 | 1106 reg_genmove white |
| 508 | #? [C1] |
| 509 | |
| 510 | |
| 511 | loadsgf games/seki16.sgf |
| 512 | 1201 reg_genmove white |
| 513 | #? [B2] |
| 514 | 1202 reg_genmove black |
| 515 | #? [B2] |
| 516 | |
| 517 | # Black can make seki in sente with most moves but B1 and A2 lose one |
| 518 | # point. Tenuki let's white kill with ko. |
| 519 | play white B2 |
| 520 | 1203 reg_genmove black |
| 521 | #? [C2|B3|C1|A3] |
| 522 | |
| 523 | # B3, A2, and A1 fail to make seki. |
| 524 | play black C2 |
| 525 | 1204 reg_genmove white |
| 526 | #? [B1|C1|A3] |
| 527 | |
| 528 | # A3, B3, and A2 all make seki, but B3 and A2 lose a point. |
| 529 | play white C1 |
| 530 | 1205 reg_genmove black |
| 531 | #? [A3]* |
| 532 | |
| 533 | play black A3 |
| 534 | 1206 reg_genmove white |
| 535 | #? [B3|A2|B1] |
| 536 | |
| 537 | play white B3 |
| 538 | 1207 reg_genmove black |
| 539 | #? [A2] |
| 540 | |
| 541 | play black A2 |
| 542 | 1208 reg_genmove white |
| 543 | #? [B1] |
| 544 | |
| 545 | undo |
| 546 | undo |
| 547 | play white A2 |
| 548 | 1209 reg_genmove black |
| 549 | #? [B3]* |
| 550 | |
| 551 | play black B3 |
| 552 | 1210 reg_genmove white |
| 553 | #? [B1] |
| 554 | |
| 555 | # A3 gains a point compared to A2. B1 is two points worse. |
| 556 | undo |
| 557 | undo |
| 558 | undo |
| 559 | play black B3 |
| 560 | 1211 reg_genmove white |
| 561 | #? [A3] |
| 562 | |
| 563 | # A3 gains a point compared to B3. B1 is two points worse. |
| 564 | undo |
| 565 | play black A2 |
| 566 | 1212 reg_genmove white |
| 567 | #? [A3] |
| 568 | |
| 569 | play white A3 |
| 570 | 1213 reg_genmove black |
| 571 | #? [B3] |
| 572 | |
| 573 | play black B3 |
| 574 | 1214 reg_genmove white |
| 575 | #? [A1] |
| 576 | |
| 577 | undo |
| 578 | undo |
| 579 | undo |
| 580 | undo |
| 581 | |
| 582 | # Tenuki leaves seki but loses a point. |
| 583 | play white B1 |
| 584 | 1215 reg_genmove black |
| 585 | #? [C1|A3|B3|A2|C9] |
| 586 | |
| 587 | # B3 and A2 both fail. |
| 588 | play black C1 |
| 589 | 1216 reg_genmove white |
| 590 | #? [A3] |
| 591 | |
| 592 | # A2 also gives seki but loses a point, as does tenuki. |
| 593 | play white A3 |
| 594 | 1217 reg_genmove black |
| 595 | #? [B3]* |
| 596 | |
| 597 | undo |
| 598 | undo |
| 599 | play black A3 |
| 600 | 1218 reg_genmove white |
| 601 | #? [C1] |
| 602 | |
| 603 | # Tenuki is fine. |
| 604 | play white C1 |
| 605 | 1219 reg_genmove black |
| 606 | #? [B3|A2|C9] |
| 607 | |
| 608 | undo |
| 609 | undo |
| 610 | play black B3 |
| 611 | 1220 reg_genmove white |
| 612 | #? [A2|A3]* |
| 613 | |
| 614 | undo |
| 615 | play black A2 |
| 616 | 1221 reg_genmove black |
| 617 | #? [B3|A3] |
| 618 | |
| 619 | # B1 and B3 lose a point. |
| 620 | undo |
| 621 | undo |
| 622 | play white A3 |
| 623 | 1222 reg_genmove black |
| 624 | #? [C1]* |
| 625 | |
| 626 | play black C1 |
| 627 | 1223 reg_genmove white |
| 628 | #? [B1] |
| 629 | |
| 630 | # Only A3 works. If black gets both C1 and A3, white can't do anything |
| 631 | # with two stones (in addition to B2). |
| 632 | undo |
| 633 | undo |
| 634 | undo |
| 635 | play black C1 |
| 636 | 1224 reg_genmove white |
| 637 | #? [A3] |
| 638 | |
| 639 | play white A3 |
| 640 | 1225 reg_genmove black |
| 641 | #? [B1|C2|B3] |
| 642 | |
| 643 | play black B1 |
| 644 | 1226 reg_genmove white |
| 645 | #? [C2] |
| 646 | |
| 647 | play white C2 |
| 648 | 1227 reg_genmove black |
| 649 | #? [B3]* |
| 650 | |
| 651 | # C1 is one point better than C2 and A3. |
| 652 | undo |
| 653 | undo |
| 654 | undo |
| 655 | undo |
| 656 | play black B1 |
| 657 | 1228 reg_genmove white |
| 658 | #? [C1]* |
| 659 | |
| 660 | loadsgf games/FSGCBot-dr.sgf 234 |
| 661 | 2010 reg_genmove white |
| 662 | #? [A19|B17] |
| 663 | |
| 664 | loadsgf games/seki_nakade1.sgf |
| 665 | 2020 dragon_status D9 |
| 666 | #? [alive] |
| 667 | |
| 668 | loadsgf games/seki_nakade2.sgf |
| 669 | 2030 dragon_status F9 |
| 670 | #? [critical H9 H9]* |
| 671 | |
| 672 | play white H9 |
| 673 | play white H7 |
| 674 | play white G7 |
| 675 | play white G9 |
| 676 | |
| 677 | 2050 dragon_status G8 |
| 678 | #? [alive] |