| Step | Hyp | Ref
| Expression |
| 1 | | 0z 9490 |
. . . . . . 7
 |
| 2 | | 3z 9508 |
. . . . . . 7
 |
| 3 | | fzfig 10693 |
. . . . . . 7
 
       |
| 4 | 1, 2, 3 | mp2an 426 |
. . . . . 6
     |
| 5 | 4 | elexi 2815 |
. . . . 5
     |
| 6 | | 1zzd 9506 |
. . . . . . . . 9
  |
| 7 | | prexg 4301 |
. . . . . . . . 9
 
      |
| 8 | 1, 6, 7 | sylancr 414 |
. . . . . . . 8
     |
| 9 | 1 | a1i 9 |
. . . . . . . . 9
  |
| 10 | | 2z 9507 |
. . . . . . . . 9
 |
| 11 | | prexg 4301 |
. . . . . . . . 9
 
      |
| 12 | 9, 10, 11 | sylancl 413 |
. . . . . . . 8
     |
| 13 | | prexg 4301 |
. . . . . . . . 9
 
      |
| 14 | 9, 2, 13 | sylancl 413 |
. . . . . . . 8
     |
| 15 | | prexg 4301 |
. . . . . . . . 9
 
      |
| 16 | 6, 10, 15 | sylancl 413 |
. . . . . . . 8
     |
| 17 | 10 | a1i 9 |
. . . . . . . . 9
  |
| 18 | | prexg 4301 |
. . . . . . . . 9
 
      |
| 19 | 17, 2, 18 | sylancl 413 |
. . . . . . . 8
     |
| 20 | 8, 12, 14, 16, 16, 19 | s6cld 11367 |
. . . . . . 7
                      Word   |
| 21 | 20 | mptru 1406 |
. . . . . 6
                      Word  |
| 22 | 21 | elexi 2815 |
. . . . 5
                       |
| 23 | 5, 22 | opvtxfvi 15897 |
. . . 4
Vtx                                    |
| 24 | 23 | eqcomi 2235 |
. . 3
    Vtx                                |
| 25 | | 3nn0 9420 |
. . . . 5
 |
| 26 | | 0elfz 10353 |
. . . . 5

      |
| 27 | 25, 26 | ax-mp 5 |
. . . 4
     |
| 28 | 27 | a1i 9 |
. . 3
      |
| 29 | 5, 22 | opiedgfvi 15898 |
. . . 4
iEdg                                                      |
| 30 | 29 | eqcomi 2235 |
. . 3
                      iEdg                                |
| 31 | 19 | s1cld 11203 |
. . . . . 6
       Word   |
| 32 | 31 | mptru 1406 |
. . . . 5
       Word  |
| 33 | | df-s7 11346 |
. . . . 5
                                                ++          |
| 34 | | eqid 2231 |
. . . . . 6
         |
| 35 | | eqid 2231 |
. . . . . 6
                                                   |
| 36 | | eqid 2231 |
. . . . . 6
                                                                 |
| 37 | 34, 35, 36 | konigsbergssiedgwen 16356 |
. . . . 5
                        Word
       Word                                                 ++                                Word       
    |
| 38 | 21, 32, 33, 37 | mp3an 1373 |
. . . 4
                      Word       
   |
| 39 | 38 | a1i 9 |
. . 3
                      Word            |
| 40 | 8, 12, 14, 16, 16 | s5cld 11366 |
. . . . . . . 8
                   Word   |
| 41 | 40 | mptru 1406 |
. . . . . . 7
                   Word  |
| 42 | 41 | elexi 2815 |
. . . . . 6
                    |
| 43 | 5, 42 | opvtxfvi 15897 |
. . . . 5
Vtx                                 |
| 44 | 43 | eqcomi 2235 |
. . . 4
    Vtx                             |
| 45 | 5, 42 | opiedgfvi 15898 |
. . . . 5
iEdg                                                |
| 46 | 45 | eqcomi 2235 |
. . . 4
                   iEdg                             |
| 47 | 19, 19 | s2cld 11363 |
. . . . 5
          Word   |
| 48 | 8, 12, 14, 16, 16, 19, 19 | s5s2d 11390 |
. . . . 5
                                             ++              |
| 49 | 34, 35, 36 | konigsbergssiedgwen 16356 |
. . . . 5
                     Word           Word                                              ++                                Word       
    |
| 50 | 40, 47, 48, 49 | syl3anc 1273 |
. . . 4
                   Word       
    |
| 51 | 8, 12, 14, 16 | s4cld 11365 |
. . . . . . . . 9
                Word   |
| 52 | 51 | mptru 1406 |
. . . . . . . 8
                Word  |
| 53 | 52 | elexi 2815 |
. . . . . . 7
                 |
| 54 | 5, 53 | opvtxfvi 15897 |
. . . . . 6
Vtx                              |
| 55 | 54 | eqcomi 2235 |
. . . . 5
    Vtx                          |
| 56 | 5, 53 | opiedgfvi 15898 |
. . . . . 6
iEdg                                          |
| 57 | 56 | eqcomi 2235 |
. . . . 5
                iEdg                          |
| 58 | 16, 19, 19 | s3cld 11364 |
. . . . . 6
             Word   |
| 59 | 8, 12, 14, 16, 16, 19, 19 | s4s3d 11387 |
. . . . . 6
                                          ++                 |
| 60 | 34, 35, 36 | konigsbergssiedgwen 16356 |
. . . . . 6
                  Word              Word                                           ++                                Word       
    |
| 61 | 51, 58, 59, 60 | syl3anc 1273 |
. . . . 5
                Word       
    |
| 62 | 8 | mptru 1406 |
. . . . . . . . . 10
    |
| 63 | 1, 10, 11 | mp2an 426 |
. . . . . . . . . 10
    |
| 64 | 1, 2, 13 | mp2an 426 |
. . . . . . . . . 10
    |
| 65 | | s3cl 11371 |
. . . . . . . . . 10
                         Word   |
| 66 | 62, 63, 64, 65 | mp3an 1373 |
. . . . . . . . 9
             Word  |
| 67 | 66 | elexi 2815 |
. . . . . . . 8
              |
| 68 | 5, 67 | opvtxfvi 15897 |
. . . . . . 7
Vtx                           |
| 69 | 68 | eqcomi 2235 |
. . . . . 6
    Vtx                       |
| 70 | 5, 67 | opiedgfvi 15898 |
. . . . . . 7
iEdg                                    |
| 71 | 70 | eqcomi 2235 |
. . . . . 6
             iEdg                       |
| 72 | 16, 16, 19, 19 | s4cld 11365 |
. . . . . . . . 9
                Word   |
| 73 | 72 | mptru 1406 |
. . . . . . . 8
                Word  |
| 74 | 8, 12, 14, 16, 16, 19, 19 | s3s4d 11388 |
. . . . . . . . 9
                                       ++                    |
| 75 | 74 | mptru 1406 |
. . . . . . . 8
                                       ++                   |
| 76 | 34, 35, 36 | konigsbergssiedgwen 16356 |
. . . . . . . 8
               Word                 Word                                        ++                                Word       
    |
| 77 | 66, 73, 75, 76 | mp3an 1373 |
. . . . . . 7
             Word       
   |
| 78 | 77 | a1i 9 |
. . . . . 6
             Word       
    |
| 79 | | s2cl 11370 |
. . . . . . . . . . . 12
                   Word   |
| 80 | 62, 63, 79 | mp2an 426 |
. . . . . . . . . . 11
          Word  |
| 81 | 80 | elexi 2815 |
. . . . . . . . . 10
           |
| 82 | 5, 81 | opvtxfvi 15897 |
. . . . . . . . 9
Vtx                        |
| 83 | 82 | eqcomi 2235 |
. . . . . . . 8
    Vtx                    |
| 84 | 5, 81 | opiedgfvi 15898 |
. . . . . . . . 9
iEdg                              |
| 85 | 84 | eqcomi 2235 |
. . . . . . . 8
          iEdg                    |
| 86 | | s1fv 11207 |
. . . . . . . . . . . 12
                    |
| 87 | 62, 86 | ax-mp 5 |
. . . . . . . . . . 11
               |
| 88 | | 1nn 9154 |
. . . . . . . . . . . 12
 |
| 89 | | s1cl 11202 |
. . . . . . . . . . . . . . 15
           Word   |
| 90 | 62, 89 | ax-mp 5 |
. . . . . . . . . . . . . 14
       Word  |
| 91 | 12, 14, 16, 16, 19, 19 | s6cld 11367 |
. . . . . . . . . . . . . . 15
                      Word   |
| 92 | 91 | mptru 1406 |
. . . . . . . . . . . . . 14
                      Word  |
| 93 | 8, 12, 14, 16, 16, 19, 19 | s1s6d 11383 |
. . . . . . . . . . . . . . 15
                                 ++                          |
| 94 | 93 | mptru 1406 |
. . . . . . . . . . . . . 14
                                 ++
                        |
| 95 | 34, 35, 36 | konigsbergssiedgwen 16356 |
. . . . . . . . . . . . . 14
         Word                       Word                                  ++                                Word       
    |
| 96 | 90, 92, 94, 95 | mp3an 1373 |
. . . . . . . . . . . . 13
       Word           |
| 97 | | s1leng 11205 |
. . . . . . . . . . . . . 14
    ♯        
  |
| 98 | 62, 97 | ax-mp 5 |
. . . . . . . . . . . . 13
♯          |
| 99 | 96, 98 | pm3.2i 272 |
. . . . . . . . . . . 12
        Word       
  ♯           |
| 100 | | fstwrdne0 11157 |
. . . . . . . . . . . 12
          Word       
  ♯        
                   
    |
| 101 | 88, 99, 100 | mp2an 426 |
. . . . . . . . . . 11
                     |
| 102 | 87, 101 | eqeltrri 2305 |
. . . . . . . . . 10
         
   |
| 103 | 102 | a1i 9 |
. . . . . . . . 9
              |
| 104 | | 2nn0 9419 |
. . . . . . . . . . . . 13
 |
| 105 | | 2re 9213 |
. . . . . . . . . . . . . 14
 |
| 106 | | 3re 9217 |
. . . . . . . . . . . . . 14
 |
| 107 | | 2lt3 9314 |
. . . . . . . . . . . . . 14
 |
| 108 | 105, 106,
107 | ltleii 8282 |
. . . . . . . . . . . . 13
 |
| 109 | | elfz2nn0 10347 |
. . . . . . . . . . . . 13
    

   |
| 110 | 104, 25, 108, 109 | mpbir3an 1205 |
. . . . . . . . . . . 12
     |
| 111 | | prelpwi 4306 |
. . . . . . . . . . . 12
     
               |
| 112 | 27, 110, 111 | mp2an 426 |
. . . . . . . . . . 11
         |
| 113 | | 0ne2 9349 |
. . . . . . . . . . . . 13
 |
| 114 | | pr2ne 7397 |
. . . . . . . . . . . . . 14
 
        |
| 115 | 1, 10, 114 | mp2an 426 |
. . . . . . . . . . . . 13
   
  |
| 116 | 113, 115 | mpbir 146 |
. . . . . . . . . . . 12
    |
| 117 | 116 | olci 739 |
. . . . . . . . . . 11
   
     |
| 118 | | breq1 4091 |
. . . . . . . . . . . . 13
    
      |
| 119 | | breq1 4091 |
. . . . . . . . . . . . 13
    
      |
| 120 | 118, 119 | orbi12d 800 |
. . . . . . . . . . . 12
     
            |
| 121 | 120 | elrab 2962 |
. . . . . . . . . . 11
                     
   
       |
| 122 | 112, 117,
121 | mpbir2an 950 |
. . . . . . . . . 10
         
   |
| 123 | 122 | a1i 9 |
. . . . . . . . 9
              |
| 124 | 103, 123 | s2cld 11363 |
. . . . . . . 8
          Word            |
| 125 | 90 | elexi 2815 |
. . . . . . . . . . . 12
        |
| 126 | 5, 125 | opvtxfvi 15897 |
. . . . . . . . . . 11
Vtx                     |
| 127 | 126 | eqcomi 2235 |
. . . . . . . . . 10
    Vtx                 |
| 128 | 5, 125 | opiedgfvi 15898 |
. . . . . . . . . . 11
iEdg                        |
| 129 | 128 | eqcomi 2235 |
. . . . . . . . . 10
       iEdg                 |
| 130 | 96 | a1i 9 |
. . . . . . . . . 10
       Word       
    |
| 131 | | 0ex 4216 |
. . . . . . . . . . . . . 14
 |
| 132 | 5, 131 | opvtxfvi 15897 |
. . . . . . . . . . . . 13
Vtx              |
| 133 | 132 | eqcomi 2235 |
. . . . . . . . . . . 12
    Vtx          |
| 134 | 5, 131 | opiedgfvi 15898 |
. . . . . . . . . . . . 13
iEdg          |
| 135 | 134 | eqcomi 2235 |
. . . . . . . . . . . 12
iEdg          |
| 136 | | wrd0 11142 |
. . . . . . . . . . . . 13
Word           |
| 137 | 136 | a1i 9 |
. . . . . . . . . . . 12
Word
           |
| 138 | | eqid 2231 |
. . . . . . . . . . . . . 14
 |
| 139 | 138 | a1i 9 |
. . . . . . . . . . . . 13
  |
| 140 | 4 | a1i 9 |
. . . . . . . . . . . . 13
      |
| 141 | | upgr0eop 15992 |
. . . . . . . . . . . . . . 15
           
UPGraph |
| 142 | 4, 141 | ax-mp 5 |
. . . . . . . . . . . . . 14
      
UPGraph |
| 143 | 142 | a1i 9 |
. . . . . . . . . . . . 13
       UPGraph |
| 144 | 133, 135,
28, 139, 140, 143 | vtxdgfi0e 16165 |
. . . . . . . . . . . 12
 VtxDeg              |
| 145 | 126 | a1i 9 |
. . . . . . . . . . . 12
Vtx                      |
| 146 | | 1nn0 9418 |
. . . . . . . . . . . . . 14
 |
| 147 | | 1le3 9355 |
. . . . . . . . . . . . . 14
 |
| 148 | | elfz2nn0 10347 |
. . . . . . . . . . . . . 14
    

   |
| 149 | 146, 25, 147, 148 | mpbir3an 1205 |
. . . . . . . . . . . . 13
     |
| 150 | 149 | a1i 9 |
. . . . . . . . . . . 12
      |
| 151 | | 1ne0 9211 |
. . . . . . . . . . . . 13
 |
| 152 | 151 | a1i 9 |
. . . . . . . . . . . 12
  |
| 153 | | ccatlid 11187 |
. . . . . . . . . . . . . . 15
        Word 
++                  |
| 154 | 90, 153 | ax-mp 5 |
. . . . . . . . . . . . . 14
 ++                 |
| 155 | 128, 154 | eqtr4i 2255 |
. . . . . . . . . . . . 13
iEdg                 ++          |
| 156 | 155 | a1i 9 |
. . . . . . . . . . . 12
iEdg                 ++           |
| 157 | 133, 28, 135, 137, 144, 145, 140, 150, 152, 156 | vdegp1bid 16185 |
. . . . . . . . . . 11
 VtxDeg                       |
| 158 | | 0p1e1 9257 |
. . . . . . . . . . 11
   |
| 159 | 157, 158 | eqtrdi 2280 |
. . . . . . . . . 10
 VtxDeg                     |
| 160 | 82 | a1i 9 |
. . . . . . . . . 10
Vtx                         |
| 161 | 110 | a1i 9 |
. . . . . . . . . 10
      |
| 162 | | 2ne0 9235 |
. . . . . . . . . . 11
 |
| 163 | 162 | a1i 9 |
. . . . . . . . . 10
  |
| 164 | | df-s2 11341 |
. . . . . . . . . . . 12
                  ++          |
| 165 | 84, 164 | eqtri 2252 |
. . . . . . . . . . 11
iEdg                           ++
         |
| 166 | 165 | a1i 9 |
. . . . . . . . . 10
iEdg                           ++           |
| 167 | 127, 28, 129, 130, 159, 160, 140, 161, 163, 166 | vdegp1bid 16185 |
. . . . . . . . 9
 VtxDeg                          |
| 168 | | 1p1e2 9260 |
. . . . . . . . 9
   |
| 169 | 167, 168 | eqtrdi 2280 |
. . . . . . . 8
 VtxDeg                        |
| 170 | 68 | a1i 9 |
. . . . . . . 8
Vtx                            |
| 171 | | nn0fz0 10354 |
. . . . . . . . . 10

      |
| 172 | 25, 171 | mpbi 145 |
. . . . . . . . 9
     |
| 173 | 172 | a1i 9 |
. . . . . . . 8
      |
| 174 | | 3ne0 9238 |
. . . . . . . . 9
 |
| 175 | 174 | a1i 9 |
. . . . . . . 8
  |
| 176 | | df-s3 11342 |
. . . . . . . . . 10
                        ++          |
| 177 | 70, 176 | eqtri 2252 |
. . . . . . . . 9
iEdg                                 ++          |
| 178 | 177 | a1i 9 |
. . . . . . . 8
iEdg                                 ++           |
| 179 | 83, 28, 85, 124, 169, 170, 140, 173, 175, 178 | vdegp1bid 16185 |
. . . . . . 7
 VtxDeg                             |
| 180 | | 2p1e3 9277 |
. . . . . . 7
   |
| 181 | 179, 180 | eqtrdi 2280 |
. . . . . 6
 VtxDeg                           |
| 182 | 54 | a1i 9 |
. . . . . 6
Vtx                               |
| 183 | | 1ne2 9350 |
. . . . . . 7
 |
| 184 | 183 | a1i 9 |
. . . . . 6
  |
| 185 | | df-s4 11343 |
. . . . . . . 8
                              ++          |
| 186 | 56, 185 | eqtri 2252 |
. . . . . . 7
iEdg                                       ++
         |
| 187 | 186 | a1i 9 |
. . . . . 6
iEdg                                       ++           |
| 188 | 69, 28, 71, 78, 181, 182, 140, 150, 152, 161, 163, 184, 187 | vdegp1aid 16184 |
. . . . 5
 VtxDeg                              |
| 189 | 43 | a1i 9 |
. . . . 5
Vtx                                  |
| 190 | | df-s5 11344 |
. . . . . . 7
                                    ++          |
| 191 | 45, 190 | eqtri 2252 |
. . . . . 6
iEdg                                             ++          |
| 192 | 191 | a1i 9 |
. . . . 5
iEdg                                             ++
          |
| 193 | 55, 28, 57, 61, 188, 189, 140, 150, 152, 161, 163, 184, 192 | vdegp1aid 16184 |
. . . 4
 VtxDeg                                 |
| 194 | 23 | a1i 9 |
. . . 4
Vtx                                     |
| 195 | 105, 107 | ltneii 8276 |
. . . . 5
 |
| 196 | 195 | a1i 9 |
. . . 4
  |
| 197 | | df-s6 11345 |
. . . . . 6
                                          ++          |
| 198 | 29, 197 | eqtri 2252 |
. . . . 5
iEdg                                                   ++
         |
| 199 | 198 | a1i 9 |
. . . 4
iEdg                                                   ++           |
| 200 | 44, 28, 46, 50, 193, 194, 140, 161, 163, 173, 175, 196, 199 | vdegp1aid 16184 |
. . 3
 VtxDeg                                    |
| 201 | | konigsberg.v |
. . . . 5
     |
| 202 | | konigsberg.e |
. . . . 5
                          |
| 203 | | konigsberg.g |
. . . . 5
    |
| 204 | 201, 202,
203 | konigsbergvtx 16352 |
. . . 4
Vtx       |
| 205 | 204 | a1i 9 |
. . 3
Vtx        |
| 206 | 201, 202,
203 | konigsbergiedg 16353 |
. . . . 5
iEdg                            |
| 207 | 206, 33 | eqtri 2252 |
. . . 4
iEdg                         ++          |
| 208 | 207 | a1i 9 |
. . 3
iEdg                         ++           |
| 209 | 24, 28, 30, 39, 200, 205, 140, 161, 163, 173, 175, 196, 208 | vdegp1aid 16184 |
. 2
 VtxDeg       |
| 210 | 209 | mptru 1406 |
1
 VtxDeg      |