Parity checks
X-checks 300 (max weight 4) · Z-checks 300 (max weight 4)
H_X (300 checks, sparse supports)
[0, 1]
[2, 3]
[4, 5]
[7, 8]
[9, 10]
[11, 12]
[14, 15]
[16, 17]
[18, 19]
[1, 2, 22, 23]
[3, 4, 24, 25]
[5, 6, 26, 27]
[8, 9, 29, 30]
[10, 11, 31, 32]
[12, 13, 33, 34]
[15, 16, 36, 37]
[17, 18, 38, 39]
[19, 20, 40, 41]
[21, 22, 42, 43]
[23, 24, 44, 45]
[25, 26, 46, 47]
[28, 29, 49, 50]
[30, 31, 51, 52]
[32, 33, 53, 54]
[35, 36, 56, 57]
[37, 38, 58, 59]
[39, 40, 60, 61]
[43, 44, 64, 65]
[45, 46, 66, 67]
[47, 48, 68, 69]
[50, 51, 71, 72]
[52, 53, 73, 74]
[54, 55, 75, 76]
[57, 58, 78, 79]
[59, 60, 80, 81]
[61, 62, 82, 83]
[63, 64, 84, 85]
[65, 66, 86, 87]
[67, 68, 88, 89]
[70, 71, 91, 92]
[72, 73, 93, 94]
[74, 75, 95, 96]
[77, 78, 98, 99]
[79, 80, 100, 101]
[81, 82, 102, 103]
[85, 86, 106, 107]
[87, 88, 108, 109]
[89, 90, 110, 111]
[92, 93, 114, 115]
[94, 95, 116, 117]
[96, 97, 118, 119]
[99, 100, 122, 123]
[101, 102, 124, 125]
[103, 104, 126, 127]
[105, 106, 128, 129]
[107, 108, 130, 131]
[109, 110, 132, 133]
[111, 112, 134, 135]
[113, 114, 136, 137]
[115, 116, 138, 139]
[117, 118, 140, 141]
[119, 120, 142, 143]
[121, 122, 144, 145]
[123, 124, 146, 147]
[125, 126, 148, 149]
[129, 130]
[131, 132, 151]
[133, 134, 152, 153]
[135, 136, 154, 155]
[137, 138, 156, 157]
[139, 140, 158]
[141, 142, 159, 160]
[143, 144, 161, 162]
[145, 146, 163, 164]
[147, 148]
[149, 150]
[151, 152, 165, 166]
[153, 154, 167, 168]
[155, 156, 169, 170]
[157, 171]
[158, 159, 172, 173]
[160, 161, 174, 175]
[162, 163, 176, 177]
[164, 178]
[165, 179]
[166, 167, 180, 181]
[168, 169, 182, 183]
[170, 171, 184, 185]
[172, 186]
[173, 174, 187, 188]
[175, 176, 189, 190]
[177, 178, 191, 192]
[193, 194]
[195, 196]
[179, 180, 197, 198]
[181, 182, 199, 200]
[183, 184, 201, 202]
[185, 203, 204]
[186, 187, 205, 206]
[188, 189, 207, 208]
[190, 191, 209, 210]
[192, 211, 212]
[213, 214]
[194, 195, 217, 218]
[196, 197, 219, 220]
[198, 199, 221, 222]
[200, 201, 223, 224]
[202, 203, 225, 226]
[204, 205, 227, 228]
[206, 207, 229, 230]
[208, 209, 231, 232]
[210, 211, 233, 234]
[212, 213, 235, 236]
[214, 215, 237, 238]
[216, 217, 239, 240]
[218, 219, 241, 242]
[220, 221, 243, 244]
[224, 225, 246, 247]
[226, 227, 248, 249]
[228, 229, 250, 251]
[232, 233, 253, 254]
[234, 235, 255, 256]
[236, 237, 257, 258]
[240, 241, 261, 262]
[242, 243, 263, 264]
[244, 245, 265, 266]
[247, 248, 268, 269]
[249, 250, 270, 271]
[251, 252, 272, 273]
[254, 255, 275, 276]
[256, 257, 277, 278]
[258, 259, 279, 280]
[260, 261, 281, 282]
[262, 263, 283, 284]
[264, 265, 285, 286]
[267, 268, 288, 289]
[269, 270, 290, 291]
[271, 272, 292, 293]
[274, 275, 295, 296]
[276, 277, 297, 298]
[278, 279, 299, 300]
[282, 283, 303, 304]
[284, 285, 305, 306]
[286, 287, 307, 308]
[289, 290, 311, 312]
[291, 292, 313, 314]
[293, 294, 315, 316]
[296, 297, 319, 320]
[298, 299, 321, 322]
[300, 301, 323, 324]
[302, 303, 325, 326]
[304, 305, 327, 328]
[306, 307, 329, 330]
[308, 309, 331, 332]
[310, 311, 333, 334]
[312, 313, 335, 336]
[314, 315, 337, 338]
[316, 317, 339, 340]
[318, 319, 341, 342]
[320, 321, 343, 344]
[322, 323, 345, 346]
[326, 327]
[328, 329, 348]
[330, 331, 349, 350]
[332, 333, 351, 352]
[334, 335, 353, 354]
[336, 337, 355]
[338, 339, 356, 357]
[340, 341, 358, 359]
[342, 343, 360, 361]
[344, 345]
[346, 347]
[348, 349, 362, 363]
[350, 351, 364, 365]
[352, 353, 366, 367]
[354, 368]
[355, 356, 369, 370]
[357, 358, 371, 372]
[359, 360, 373, 374]
[361, 375]
[362, 376]
[363, 364, 377, 378]
[365, 366, 379, 380]
[367, 368, 381, 382]
[369, 383]
[370, 371, 384, 385]
[372, 373, 386, 387]
[374, 375, 388, 389]
[390, 391]
[392, 393]
[376, 377, 394, 395]
[378, 379, 396, 397]
[380, 381, 398, 399]
[382, 400, 401]
[383, 384, 402, 403]
[385, 386, 404, 405]
[387, 388, 406, 407]
[389, 408, 409]
[410, 411]
[391, 392, 414, 415]
[393, 394, 416, 417]
[395, 396, 418, 419]
[397, 398, 420, 421]
[399, 400, 422, 423]
[401, 402, 424, 425]
[403, 404, 426, 427]
[405, 406, 428, 429]
[407, 408, 430, 431]
[409, 410, 432, 433]
[411, 412, 434, 435]
[413, 414, 436, 437]
[415, 416, 438, 439]
[417, 418, 440, 441]
[421, 422, 443, 444]
[423, 424, 445, 446]
[425, 426, 447, 448]
[429, 430, 450, 451]
[431, 432, 452, 453]
[433, 434, 454, 455]
[437, 438, 458, 459]
[439, 440, 460, 461]
[441, 442, 462, 463]
[444, 445, 465, 466]
[446, 447, 467, 468]
[448, 449, 469, 470]
[451, 452, 472, 473]
[453, 454, 474, 475]
[455, 456, 476, 477]
[457, 458, 478, 479]
[459, 460, 480, 481]
[461, 462, 482, 483]
[464, 465, 485, 486]
[466, 467, 487, 488]
[468, 469, 489, 490]
[471, 472, 492, 493]
[473, 474, 494, 495]
[475, 476, 496, 497]
[479, 480, 500, 501]
[481, 482, 502, 503]
[483, 484, 504, 505]
[486, 487, 508, 509]
[488, 489, 510, 511]
[490, 491, 512, 513]
[493, 494, 516, 517]
[495, 496, 518, 519]
[497, 498, 520, 521]
[499, 500, 522, 523]
[501, 502, 524, 525]
[503, 504, 526, 527]
[505, 506, 528, 529]
[507, 508, 530, 531]
[509, 510, 532, 533]
[511, 512, 534, 535]
[513, 514, 536, 537]
[515, 516, 538, 539]
[517, 518, 540, 541]
[519, 520, 542, 543]
[523, 524]
[525, 526, 545]
[527, 528, 546, 547]
[529, 530, 548, 549]
[531, 532, 550, 551]
[533, 534, 552]
[535, 536, 553, 554]
[537, 538, 555, 556]
[539, 540, 557, 558]
[541, 542]
[543, 544]
[545, 546, 559, 560]
[547, 548, 561, 562]
[549, 550, 563, 564]
[551, 565]
[552, 553, 566, 567]
[554, 555, 568, 569]
[556, 557, 570, 571]
[558, 572]
[559, 573]
[560, 561, 574, 575]
[562, 563, 576, 577]
[564, 565, 578, 579]
[566, 580]
[567, 568, 581, 582]
[569, 570, 583, 584]
[571, 572, 585, 586]
[573, 574, 587, 588]
[575, 576, 589, 590]
[577, 578, 591, 592]
[579, 593]
[580, 581, 594, 595]
[582, 583, 596, 597]
[584, 585, 598, 599]
[586, 600]
[587, 601]
[588, 589, 602, 603]
[590, 591, 604, 605]
[592, 593, 606, 607]
[594, 608]
[595, 596, 609, 610]
[597, 598, 611, 612]
[599, 600, 613, 614]
H_Z (300 checks, sparse supports)
[0, 1, 21, 22]
[2, 3, 23, 24]
[4, 5, 25, 26]
[6, 27]
[7, 8, 28, 29]
[9, 10, 30, 31]
[11, 12, 32, 33]
[13, 34]
[14, 15, 35, 36]
[16, 17, 37, 38]
[18, 19, 39, 40]
[20, 41]
[21, 42]
[22, 23, 43, 44]
[24, 25, 45, 46]
[26, 27, 47, 48]
[28, 49]
[29, 30, 50, 51]
[31, 32, 52, 53]
[33, 34, 54, 55]
[35, 56]
[36, 37, 57, 58]
[38, 39, 59, 60]
[40, 41, 61, 62]
[42, 43, 63, 64]
[44, 45, 65, 66]
[46, 47, 67, 68]
[48, 69]
[49, 50, 70, 71]
[51, 52, 72, 73]
[53, 54, 74, 75]
[55, 76]
[56, 57, 77, 78]
[58, 59, 79, 80]
[60, 61, 81, 82]
[62, 83]
[63, 84]
[64, 65, 85, 86]
[66, 67, 87, 88]
[68, 69, 89, 90]
[70, 91]
[71, 72, 92, 93]
[73, 74, 94, 95]
[75, 76, 96, 97]
[77, 98]
[78, 79, 99, 100]
[80, 81, 101, 102]
[82, 83, 103, 104]
[84, 85, 105, 106]
[86, 87, 107, 108]
[88, 89, 109, 110]
[90, 111, 112]
[91, 92, 113, 114]
[93, 94, 115, 116]
[95, 96, 117, 118]
[97, 119, 120]
[98, 99, 121, 122]
[100, 101, 123, 124]
[102, 103, 125, 126]
[104, 127]
[105, 128]
[106, 107, 129, 130]
[108, 109, 131, 132]
[110, 111, 133, 134]
[112, 113, 135, 136]
[114, 115, 137, 138]
[116, 117, 139, 140]
[118, 119, 141, 142]
[120, 121, 143, 144]
[122, 123, 145, 146]
[124, 125, 147, 148]
[126, 127, 149, 150]
[132, 133, 151, 152]
[134, 135, 153, 154]
[136, 137, 155, 156]
[140, 141, 158, 159]
[142, 143, 160, 161]
[144, 145, 162, 163]
[152, 153, 166, 167]
[154, 155, 168, 169]
[156, 157, 170, 171]
[159, 160, 173, 174]
[161, 162, 175, 176]
[163, 164, 177, 178]
[165, 166, 179, 180]
[167, 168, 181, 182]
[169, 170, 183, 184]
[172, 173, 186, 187]
[174, 175, 188, 189]
[176, 177, 190, 191]
[180, 181, 198, 199]
[182, 183, 200, 201]
[184, 185, 202, 203]
[187, 188, 206, 207]
[189, 190, 208, 209]
[191, 192, 210, 211]
[193, 194, 216, 217]
[195, 196, 218, 219]
[197, 198, 220, 221]
[199, 200, 222, 223]
[201, 202, 224, 225]
[203, 204, 226, 227]
[205, 206, 228, 229]
[207, 208, 230, 231]
[209, 210, 232, 233]
[211, 212, 234, 235]
[213, 214, 236, 237]
[215, 238]
[216, 239]
[217, 218, 240, 241]
[219, 220, 242, 243]
[221, 222, 244, 245]
[223, 224, 246]
[225, 226, 247, 248]
[227, 228, 249, 250]
[229, 230, 251, 252]
[231, 232, 253]
[233, 234, 254, 255]
[235, 236, 256, 257]
[237, 238, 258, 259]
[239, 240, 260, 261]
[241, 242, 262, 263]
[243, 244, 264, 265]
[245, 266]
[246, 247, 267, 268]
[248, 249, 269, 270]
[250, 251, 271, 272]
[252, 273]
[253, 254, 274, 275]
[255, 256, 276, 277]
[257, 258, 278, 279]
[259, 280]
[260, 281]
[261, 262, 282, 283]
[263, 264, 284, 285]
[265, 266, 286, 287]
[267, 288]
[268, 269, 289, 290]
[270, 271, 291, 292]
[272, 273, 293, 294]
[274, 295]
[275, 276, 296, 297]
[277, 278, 298, 299]
[279, 280, 300, 301]
[281, 282, 302, 303]
[283, 284, 304, 305]
[285, 286, 306, 307]
[287, 308, 309]
[288, 289, 310, 311]
[290, 291, 312, 313]
[292, 293, 314, 315]
[294, 316, 317]
[295, 296, 318, 319]
[297, 298, 320, 321]
[299, 300, 322, 323]
[301, 324]
[302, 325]
[303, 304, 326, 327]
[305, 306, 328, 329]
[307, 308, 330, 331]
[309, 310, 332, 333]
[311, 312, 334, 335]
[313, 314, 336, 337]
[315, 316, 338, 339]
[317, 318, 340, 341]
[319, 320, 342, 343]
[321, 322, 344, 345]
[323, 324, 346, 347]
[329, 330, 348, 349]
[331, 332, 350, 351]
[333, 334, 352, 353]
[337, 338, 355, 356]
[339, 340, 357, 358]
[341, 342, 359, 360]
[349, 350, 363, 364]
[351, 352, 365, 366]
[353, 354, 367, 368]
[356, 357, 370, 371]
[358, 359, 372, 373]
[360, 361, 374, 375]
[362, 363, 376, 377]
[364, 365, 378, 379]
[366, 367, 380, 381]
[369, 370, 383, 384]
[371, 372, 385, 386]
[373, 374, 387, 388]
[377, 378, 395, 396]
[379, 380, 397, 398]
[381, 382, 399, 400]
[384, 385, 403, 404]
[386, 387, 405, 406]
[388, 389, 407, 408]
[390, 391, 413, 414]
[392, 393, 415, 416]
[394, 395, 417, 418]
[396, 397, 419, 420]
[398, 399, 421, 422]
[400, 401, 423, 424]
[402, 403, 425, 426]
[404, 405, 427, 428]
[406, 407, 429, 430]
[408, 409, 431, 432]
[410, 411, 433, 434]
[412, 435]
[413, 436]
[414, 415, 437, 438]
[416, 417, 439, 440]
[418, 419, 441, 442]
[420, 421, 443]
[422, 423, 444, 445]
[424, 425, 446, 447]
[426, 427, 448, 449]
[428, 429, 450]
[430, 431, 451, 452]
[432, 433, 453, 454]
[434, 435, 455, 456]
[436, 437, 457, 458]
[438, 439, 459, 460]
[440, 441, 461, 462]
[442, 463]
[443, 444, 464, 465]
[445, 446, 466, 467]
[447, 448, 468, 469]
[449, 470]
[450, 451, 471, 472]
[452, 453, 473, 474]
[454, 455, 475, 476]
[456, 477]
[457, 478]
[458, 459, 479, 480]
[460, 461, 481, 482]
[462, 463, 483, 484]
[464, 485]
[465, 466, 486, 487]
[467, 468, 488, 489]
[469, 470, 490, 491]
[471, 492]
[472, 473, 493, 494]
[474, 475, 495, 496]
[476, 477, 497, 498]
[478, 479, 499, 500]
[480, 481, 501, 502]
[482, 483, 503, 504]
[484, 505, 506]
[485, 486, 507, 508]
[487, 488, 509, 510]
[489, 490, 511, 512]
[491, 513, 514]
[492, 493, 515, 516]
[494, 495, 517, 518]
[496, 497, 519, 520]
[498, 521]
[499, 522]
[500, 501, 523, 524]
[502, 503, 525, 526]
[504, 505, 527, 528]
[506, 507, 529, 530]
[508, 509, 531, 532]
[510, 511, 533, 534]
[512, 513, 535, 536]
[514, 515, 537, 538]
[516, 517, 539, 540]
[518, 519, 541, 542]
[520, 521, 543, 544]
[526, 527, 545, 546]
[528, 529, 547, 548]
[530, 531, 549, 550]
[534, 535, 552, 553]
[536, 537, 554, 555]
[538, 539, 556, 557]
[546, 547, 560, 561]
[548, 549, 562, 563]
[550, 551, 564, 565]
[553, 554, 567, 568]
[555, 556, 569, 570]
[557, 558, 571, 572]
[559, 560, 573, 574]
[561, 562, 575, 576]
[563, 564, 577, 578]
[566, 567, 580, 581]
[568, 569, 582, 583]
[570, 571, 584, 585]
[574, 575, 588, 589]
[576, 577, 590, 591]
[578, 579, 592, 593]
[581, 582, 595, 596]
[583, 584, 597, 598]
[585, 586, 599, 600]
[587, 588, 601, 602]
[589, 590, 603, 604]
[591, 592, 605, 606]
[594, 595, 608, 609]
[596, 597, 610, 611]
[598, 599, 612, 613]
[602, 603]
[604, 605]
[606, 607]
[609, 610]
[611, 612]
[613, 614]