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.
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).
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.
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.
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.
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.
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) |