6x6-Board Renju Problems

Go games use 19x19-boards. In Go problems world, we find 4x4-board Go problems. 4x4 boards are very small, but many wonderful problems are provided.

How about Renju? 15x15-boards are used in Renju games. In Renju problems world, minimum size is 5 in the sense that Five can be made, but we cannot make Three on 5x5-boards. Therefore on 5x5-boards we cannot make Renju problems of 'Black to play and win', and we can only make such Renju problems that White will make 4-4 or force Black to play forbidden 4-4. It is true that 6x6-boards are really minimum in Renju problems world.

In this site, many Renju problems on minimum 6x6-boards are shown. It is expected to solve them by your own efforts. Some supports are provided in order to enjoy solving those problems.

On 6x6-Board Problems

The rule of 6x6-board Renju problems is weakened by removing some of real game elements. For example, the condition on numbers of Black and White stones are not required. It is possible that no defensive stones are on a board. It is impossible that a Black stone is at a center of the board (6x6-board has not a center).

a sample of 6x6-problem Although the 6x6-board is very small, many good offensive and defensive tactics found in normal Renju games can be also found in 6x6-board problems. We can say that those problems are suitable for learning and enjoying such tactics in the condensed form. Furthermore, by using small boards we get such merit as good training for complete looking-ahead or calculation about all variations. Those problems, however, occasionally require a little different sense from that of normal Renju, so it is also a good idea that one enjoys them comfortably as intelligent puzzles of a joyful field in the large world of Renju.

Terms

VCT Problems

Blk means 'Black to play and win', and Wht means 'White to play and win'. (m, n) means that there are m Black stones and n White stones in the problem.

Problems in the above table is arranged in the order of creation. If you wish to solve from easy problems to difficult, or if you have an interest in solving difficult problems only, for example, you can use next table. In the next table, all problems are classified into three levels, that is, level-1 (easy), level-2 (middle) and level-3 (advanced). Furthermore problems are sorted from easy to difficult in each level. Note that the degree of difficulty is based on the subjectivity of the author.

Problems in the above table is arranged in the order of creation. If you wish to solve from easy problems to difficult, or if you have an interest in solving difficult problems only, for example, you can use next table. In the next table, all problems are classified into three levels, that is, level-1 (easy), level-2 (middle) and level-3 (advanced). Furthermore problems are sorted from easy to difficult in each level. Note that the degree of difficulty is based on the subjectivity of the author.

level-1 c037 c080 c018 c113 c050 c072 c103 c179 c161 c170 c249 c106
c246 c099 c091 c058 c171 c227 c172 c088 c212 c198 c120 c174
c025 c009 c110 c115 c114 c160 c215 c078 c104 c062 c158 c146
c156 c069 c038 c203 c228 c049 c053 c013 c180 c032 c027 c005
c191 c118 c135 c001 c207 c148 c130 c189 c194 c086 c083 c070
c092 c125 c134 c077 c059 c046 c011 c034 c233 c175 c128 c242
c030 c108 c127 c094 c026 c081 c036 c066 c231 c121 c229 c150
c200 c193 c235 c209 c238 c162
level-2 c248 c109 c139 c234 c002 c051 c195 c250 c187 c190 c222 c247
c211 c151 c149 c140 c183 c173 c182 c245 c226 c188 c225 c131
c141 c010 c163 c176 c111 c157 c122 c089 c105 c019 c004 c164
c098 c166 c047 c061 c008 c205 c178 c044 c129 c142 c017 c196
c220 c244 c090 c184 c219 c199 c097 c192 c216 c147 c251 c116
c218 c064 c060 c074 c239 c224 c210 c232 c165 c133 c065 c206
c055 c056 c054 c221 c236 c204 c143 c137 c112 c107 c197 c177
c185 c152 c126 c132 c119 c168 c082 c031 c101 c085 c136 c100
c093 c043 c040 c124 c181 c039 c068 c075 c028 c021 c095 c087
c007 c035 c024 c015 c014
level-3 c102 c084 c022 c067 c057 c255 c256 c144 c003 c252 c201 c240
c241 c123 c117 c254 c214 c073 c217 c223 c202 c159 c208 c155
c145 c138 c006 c154 c186 c076 c213 c230 c243 c071 c253 c023
c237 c153 c079 c052 c048 c041 c096 c169 c029 c063 c033 c045
c020 c042 c012 c016 c167

VCF Problems

This section provides VCF problems, where the attacker must play Fours continuously. Blk means 'Black to play and win by continuous Fours', and Wht means 'White to play and win by continuous Fours'. (m, n) means that there are m Black stones and n White stones in the problem.

Miscellaneous Problems

Each problem in this section has some interesting feature, for example stones in the problem diagram form some shape. VCT problems and VCF problems are mixed.

Booklets of 6x6-Board Problems

booklets of 6x6-problems Three booklets of 6x6-board Renju problems will be provided in the pdf-form. Enjoy them in browser or after printing. When you print them, it is suitable to use A5-papers and both-sided printing (odd-pages are on front and even-pages on back).

  ⋅ 6x6-Board Renju Problems - 1 (Dec.2012) Errata (13 July 2013)
  ⋅ 6x6-Board Renju Problems - 2 (Feb.2013) Errata (13 July 2013)
  ⋅ 6x6-Board Renju Problems - 3 (Feb.2013) Errata (13 July 2013)