TopCoder Statistics - Problem Statement

Problem Statement

We have a rectangular board divided into a grid of unit squares. We are going to color each square either white or black.

You are given the String[] board. Each character in board represents one unit square. If board[i][j] is 'B', the corresponding square must be black. If board[i][j] is 'W', the corresponding square must be white. Finally, if board[i][j] is '?', you get to choose the color for this square: either white or black.

Two squares are adjacent if they share a common side. We want to color the board in such a way that no two adjacent squares share the same color. Return "Possible" (quotes for clarity) if it can be done, or "Impossible" otherwise.

Definition

Class:: BichromeBoard
Method:: ableToDraw
Parameters:: String[]
Returns:: String
Method signature:: String ableToDraw(String[] board)
(be sure your method is public)

Constraints

board will contain between 1 and 50 elements, inclusive.
Each element in board will contain between 1 and 50 characters, inclusive.
Each element in board will contain the same number of characters.
Each character in board will be one of 'W', 'B', '?'.

Examples

{"W?W", "??B", "???"}

Returns: "Possible"

The solution is: WBW BWB WBW
{"W??W"}

Returns: "Impossible"

The four possible colorings of this board are WWWW, WWBW, WBWW, and WBBW. In each of them there is at least one pair of adjacent squares that share the same color. Thus, there is no way to get a pattern with the desired property.
{"??"}

Returns: "Possible"

There are 2 ways: WB and BW
{"W???", "??B?", "W???", "???W"}

Returns: "Possible"
{"W???", "??B?", "W???", "?B?W"}

Returns: "Impossible"
{"B"}

Returns: "Possible"
{"WBW?WBWB?BW?W?WBWBWBWBWBWB????W?WBWBW?WBWB??W?","BWB?BWBWB?BWBW?WBW?WB????WBWB??W??BWBW?WB?B?BW","??W?W?W??BW??BWBWBWB?B?BW?WBW?W?W?WB?B??W??BWB","B?BWBW?WBW?WBWBWBWBW?WBWBWB??W???W??B?B???B?B?","WB??WB?B???BW???WB?BW???WBWBWBWBW?W?W?WBWBWBWB","B?BWBWBW???WB?BW?WBW??B?BWBWB???BW??B??WB?BWBW","?BWBWBWBWBWBWB?BWB??WBW?WB??WBW?WB?BWBW???W?WB","BW??BW??BWBW?W???W??BWB??W?WBW??B?BWB?B?BW??B?","W???WBWB??WBWBWBW?WB?BW?WBW?WBWB??WBWB?BWBWBWB","?WBWBW?W??BWBWB??WB???B??WBW?W?W?W???W?WB??WB?","WB?BWB?BW??B?BW?WB??WBWBWBW?WB?B??WBWBW?WBW?WB","BWBWB?BWBW?WBWBWBWBW??BWB????W?WBWB?BW?WBWBW?W","WBW????B?BWBWB?BWB?BWB?BWBW??BWB?BWB?BW?W?WBWB","BW???WB??W?WBW?WB?B?B?B??WB?B???BWBWBWBW??BW?W","????WBWBW??BWBWB?BWB?B??WB??WBWB??WBW??BWBWB?B","?WBWBW??BWBWBW?W??B?BWBWB??WB?B??WB??WB?BW?W?W","??WBWBWBWBWBWB?B?B??WB?BW?WB?BW?WBW?W??BWBWBWB","B?BWB?B?BW??B?BWBWBWB??W???W?WBW?WBW?W??B??WB?","WBWBWBWBW?WB?BW??BWBW??BW?WB?BWBW?WBW?W??B??WB","?WBWB?BWB??W?W?W?W?WBWBWB?BW?WBWBWBW?WB???BW?W","??WBWB??WB?BWBWB??WBWBWBW?WBW???WBW????BW?WBWB","BWBWBW??BWBW???WBW????B?BWBWB??W?W?WB?BWBWBWB?","WBWB??WBWBWB???B?B??W???WB?BW???WBWBWB?????BWB","B?BWBWBWBWBW??BWBWBWB?BWBWBWBWBWBWB??W?WBW?WB?","?B?BWBW??BWBWBWBWB?BWBWBWB??W?W?W????BWB?B??W?","B??WB?BWB?BWB??W?WB??WBWBWB???B?BWBWB?BWB?B?B?","WBW?WB?B?BWB????W??BWB?B?BW??B?B?B?B?BW??BWBWB","??B??WBWBWB?B???BWBW?W???WB?BWBW??BW?WBW????B?","?B??WB??WBWB??WB??W?WBWBWBWBWBW??BWBW?W??BWB?B","?W?WBWBWB?BW??BWBWB?BWBWB?B??WBWBW????BW?W?WB?","WB????WBWBWBW?W?WBWBWBW?WB?B??WB??W???WB??W?WB","B??WBWB??W??BWBWBWB?BW?WBWB?B??W?W??BWBWBW??BW","W???WBWBW????BWBWBWB??WB?BW?WBWBWB?B??WB???BWB","B?BWBWBWBWBW?WBWB?B?BWB?BW?WBW?WB?B???BWB?B?BW","WBW?W?WB?B?BW?WB??WB??WB?BWBW?W??B??WB?BWB?BWB","?WBW?WB??W?WBW?WB?BWBWB??WBW?WBW?W??B?BW??B?BW","?B?B?BW??B?B?BWB??WB?B?????BW?W?WBW?W?W?WBW??B","??BW?W???W?W?WBW??BWBWBWBW??B??WB?BWB??W?W??BW","W?WB?BWBWB??WB???BWBWB??W??B?BWBW?WB?BW?W?WBWB","B??WB?BW??B?BW?W?W?WB?BWBWBW??BWBWBW??BWBWBWBW","?B??WBWBWB??WB?BW?WBWBW?W??BWBWBWB??W?WB?BWBWB","B?BWBWBWBWBWBWBWB??WB?B??W?WBWBWB??W??B?BWBWBW","?B?BW?WBWBW??B?BW?W?W?WB??WB??W?W?W??BWBW?WB?B","B?B?BWB???B?BWBWBWBW?WBW???W??BWB??WB???BW??BW"}

Returns: "Possible"
{"B?B???BW?WBW","??WBWB?BWB??","BW?W?WB??W?W","WBWBWB??WB?B","BWB???B?????","???B?B?B?B?B","?W?W?WB?B???","??WBW?W?WBW?","?W?WBWB?B???","?B??WB?BWB??","BW????B?B?BW","WBW???W?W???","??BWB?BWBW?W","?BW?WB??W?W?","?????W??BW??","WB?BW?W?W???","??B??WB???B?","?B??WBW?????","?W?????W???W","???B?B?BW?W?","B?BW???W?W?W","?????BW?WB??","?W?W?W??B???","?B?BWBW?W???","?WB???BWBW??","WBW?W??B??WB","??BWB?BW?W?W","WBWB?B?BW?WB","?WB???????BW","??WB?B?BWB??","BW?W?W???WB?","WBW????BWBWB"}

Returns: "Possible"
{"??????????","B??W???W??","W?????W??B","?????W???W","??????????","??B??W????","??W???W???","????BW?W??","?????????B","??B????W??","??????????","??BW??????","??????W???","??????B?B?","??????????","????BW???W","???BW?????","B????W????","?B?B???B??"}

Returns: "Possible"
{"??????W?????????????????????????","????????????????????????????????","?????????B???????B????W??B???BW?","?????????????????W??????????????","?B??????????????????????????????","????????????????????????????????","?B???????????????????B????W?????","???W???????????W??????B?????????","W?????????????????WB????????WB??","????????????????????????????????","????????????????????????????????","????????????????????????????????","??W???????????WB????????????????","??????????B?????????????????????","W??B?????????????????B??????????","???????W????????????????????????","?B?????????????????B????????????","?????????????????????????W?????W","????????W???????????????????????","????B????W???W???????????W??????","???????????????????????????B????","????????????????????????????????","???????????B????????????????????","??????????????????B?????????????","?B??????????????????????????????","?????????????????????????W??????"}

Returns: "Possible"
{"W?????WBW??????","?????WB?????BW?","?B???????B???BW","???W???????????","?????B??W????B?","B??????W???WB??","????W??B??W????","??????B???B????","????WBW???W??B?","?W?????W?W?????","????WB?????B???"}

Returns: "Possible"
{"?B????W????B?????BW?WB???BWBWB?B?B?????","?W?W??????B??W?WB??W??BW?W?W???W??BWB??","???B???B??W?W???????W?W?W?W?WB????WBW?W","?WBWBW???WBW???W?W?WBW??B?B??W?WB??WB??","?B?B?????B???B???????B????W??BW???W????","?WB?BW??BW????B???????BW?W?W?WB????W??B","WB?????B?BWB?BW??B?B??????W???W?W?W??B?","B?????BWBW?WB????WBW?W??BW?W???WBW??B?B","?BW?WBWBW????????BWB?B?BW?WBW??BWBW?WB?","?????W??B????????W?W???W???????W?W????B","?B?B??WBWBW???W??????????B??W??BW??B??W","B?BWBWB?????B?BW?W???W??BW?W??B??WBWB?B","W??B??W?WB?B?B??????????W???WBW?WB??W?W","B?????????B?B???BW??B??WBWBW?WBW???W?W?","?B?????B??????????W?WB???????B????WB?B?","B??????W??B?BWB?B??WB???B?BW???W??BWB??","??W?????WB?????BW?W????????B??W??B??WB?","?W?W?W?WBWB???????BW??BWB??W?W?WBWB????","WB??????W??B???B??W?W???W??B??W??????B?","B??W???W?W??B???B??????WBWB????W????BWB","WB?B?BWB????WBWB???BWBW?WBWB??WB????WBW","B??WBWB??W??B???B??W??BW?WBW??B??WBW??B","???B?BW??BW???W???W???W???W??B??W?WB?B?","??????B?BWB?BWB???B???BW?W?????????WB??","W?W??BW???WBWBW?WB?B?B???BW?WB?B?????BW","B???BWBWBW???W??B??W?WB?B???B?BWBW??B??","????W??????B?BWB???B?BWBW?????WBW?W???W","BW??B????W???WBWB??W?W???????WB???B???B","?B???B???BW?W?WB??W?WBW?W???WB??W?W????","B?BW?WB??????W????BW?W?WB??????W????B?B","?BWBW?????W???WB??WB??W?WB?B?B??????W??","?W??BW??B?B?BW??B?BW?W??BW??B????WBW??B","W?W?WB?B??W?W??BW????B??W?W????????B???","??B???BW?WB??WB????WB?BW?WB?B?B?BW??B??","WB??W?WB??WB??W?W?????W???W???W???????W","BW????B????W?W???W???W??BW??B????W??B??","??WB??W??BWB?B??WB??W??BW??B????WB?BW?W","????BW?WB?B??????W?????WBW?W??B?????B??","???B?B??W?W?W?W??B?????B?????BW?WBW???W","?W?W??BW?WBW???W?W???????WB?B??W??B?BW?","?BWB??W??BWBWB????????????W????????B???","??B??W?W?????W?W??????????B????W?W?W?W?","??W?W??BWB??W?W???WBW????B?BW?????WBW??","?WB??????W??BWB?B??W?WB?B????W?WBWB??W?","?B??????W??B?B???B????WBW?W???W?W?W???W","?????W????B???B???BW???WBW?WB?BW?WBWB??","W?WB?BW?W?W??BWB?????B??W????????BW??B?","BW?W?????W?W?W??BW???????????W??B?BWB??","?BW?WB????W?WB?B?BW????BW????B?B??W??B?","?W?WB?B?B??WB????WB?B?????????B?B??W?W?"}

Returns: "Possible"
{"WBWB?BW?WBWBWB?BWBWBWBWBWB?BWBWBWBWBWB??WBW??BWB?","B?B??W?WBWBWBWB?BWB?BWBWBWBWBWBWBWBWBWBW?WBWB?BW?","WBWBWB?BW?WBWBWBW?WBWBWBW?W??BW?WBWBWBWBWBWB?BWBW","BWBWBWBWBWBWBWBW?WBW?W?WBWBWBWB?BWBW??BWBW?WBWBWB","WB??WBWBW?WB?BWBW?WBWB??W??BW??BWBWB?B?BWBWBWBWB?","?WB?BWBWBWB?B??WBW??BWBWBWBWBW?WBWB?BWBWBWB?BWBWB","W?W??BWBWBWB?B?BWBWBWBWBWBWBW?WBWB?B?BW?WBWBWBWBW","B?BWBW?WBWBWBWBW??BWB?BWBW?W?W?WBWBWBWBWBWB??WBWB","W?WBWBWBWBWBWB?BWBWBWBWBWBW?WBWBWBW?WBWBW?W?WBWBW","BWBWBWBWBWB??WB??WBWBWBWBW?WB?BWBWBWBWBWBWBWBWBWB","WBW??BWBWBWB?BWB?BWBW?WBWBWB?BWBWBWBWBWBWBWBWBWBW","BWBWBWBWB?B?BWBWBWBWB??WBWBWBW??BW?WBWBW?WBWB?BWB","WBWB??WBWB?BWBWBWBWBW?WBWBWBWB?B?BW?WBWBWBWB?BWBW","BWBWB?BWBWBWBWBWBWBWBWB?BWBWBWBWB?BWBW?WBWBWBWBWB","WBWBWBWBWBWBWBW?W?WBWBW?WBWBWB?BWBW?WBWB??WBW?WBW","?WBWBWBWBWBWB?BW?WBWBWBWBWB?BWBWB???BWBW?WB?B?BWB","WBWBW?WBWB??WBW?W?W??BWBWBWBWBW?WBWBW?WBWBWB?BWBW","BWB??WBWBW?WBWBW?WBWBWBWB?BWBW?WBWBWBWBWBW?WBWBW?","WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW?W?WBWB?BWBWBW","BWBWBWBWBWBW?WBW?WB?BWBWBWBWBWBWBWBWBWBW?W?WBWBWB","W?WBWBWBW?WB??WBWBWBWB??W?WBWBWBWBW??BW?WBWBW?WB?","?WB?BWB?BWBWBW?WBWBW?WB?BW?WBWBWBWBWB?B?BWBWB???B","?BWB?BWBWBWBWB?BWB?BWBWBW?WBWBWB??WBWBW?W?WBW?WBW","BW?WBW?WBWBWB?BWBWBWBWB?BWBWB??WBWB?BWBWB?BWBW?W?","WB?BWBW?WBWBWBWBWBWBWBWBWBWB?BWBWBWBWBWBWBWBWBWB?","BWBWBWBWBWBWBWB?B?BWBWBW?WBWBWBWBWBWBWBW?WBWBWB?B","WBW?WBWBWB?BWBWBWBWBWBW?WBWB?BWBWBWB??WB?BW?WBWBW","?WBWBWB?BWBWBWB??WBWB?B?BWBW?WBW?W??BWB?BW?WB?BW?","WB?BWBWBWBWBWBW?WBWB??W?WB?BWBWBW?WBWBWBWBWBWBWBW","BWB?BWBWBWBWBW??BWB?BWBWBWB?BWBWBW?WBWBWBWBW?WBWB","WBWBW?WBWBWBWBWBWBWB?BWBW?WB?B?BWBWBWBWBWBWBWBWBW","B?BW?WBW?W??BWBWBWBWBWBWBWBWB?BWBWBWBWB?BWBWBWBWB","?BWBWBWBWBWBWBW?WBWBWBWBWBWBWB??WBWBWBW?WBWBWBWBW"}

Returns: "Possible"
{"???B??","????B?","?B????","BW??B?","???B??","?W??BW","???B?B","???WB?","?B?B??","??B??W","??????","BW?W??","??W?W?","B?????","W??B??","??B??W","??W?W?","??????","W?????"}

Returns: "Possible"
{"?????????????????????????B????","?W????B???B??????W??B?????????","???????BW?W???????W??????B????","??B????WBW??BW???????W??BW????","?????????????????????B?????B??","B??W?????????????W??????BW???W","W???????????W??B???????????BWB","??B????W?????W????????????????","?BW?????????W??B?BW??B????????","B????????????W????????B??????W","?????B???B?B?BWB???BW?????????","BW??B???B??????WB????WB?B???B?","??WB???B???????B????WBW???????","???W???W????B????W????????????","??W???W??????B???????????B????","??B?????B????????W?W??B????W??","?????????B??WB?B????WB???B???B","???WB????????????????WB??W??B?","?????B????W??????B???B????????","?W?W?W??B??????WB?????????B???","W????B??W??????B????W?????W???","????????????????????B???????B?","???BW?????W??????B???????B????","????B?????B?????B??????W??????","?BWB??????W???W??B????????????"}

Returns: "Possible"
{"BW??B","WB??W","BWBW?","W?WBW","?WBWB","WBWBW","?WB?B","WBWB?","BWBWB","W?W?W","BW?WB","WBWBW","BW?WB","W?WBW","BW??B","W?WBW","??B?B","WB?BW","?WBWB","WBW?W","BWBWB","?BWBW","B?BW?","WBWB?","BWBW?","?BWBW","??BWB","??WBW","BW?WB","WBWBW","?W?WB","?B??W","BWBWB","WBW?W","??B?B","WBWB?","??BWB"}

Returns: "Possible"
{"??????BW????B??????????????W?W?W???WB??????","WB??W???W??????B?????????BWB??????W??B????W","???W???????W????B??????W??BWB????W?????????","????????W?????W?????????W??B??????W????????","????????????B?B????W?????W????????B??WB????","??????W?????WB???B????W???W???????W?W??????","B???B????W?????W???W?W???WB????W????B????WB","W???????WBWB???B????W??????????B????W?W?WB?","???W??????B?B??W???WB??W????BW?????W?WB?B?B","??W??B???????B???BW????????????B??????WB???","?WBW???????????WB????????W??B?????????B?B??","???????????B????WB???????B?B???BW??BWB?B??W"}

Returns: "Possible"
{"??W????BW?????W??BW?????W???WB?BWB??","????????????BW???W???W??BW?W???W????","???B?????BWB???B?B??????W??B?B?B????","?????WBW??????BWB?B??????????????WB?","WBW?W??????BW?W????B?????????B????WB","B?BWBW???W????????B????W?W????B???B?","?BW???????W?????WB?B?B??WB?BWB???B?B","???WB???????B???B?B????WB?B????WB?B?","??W?W????B?B??W???W??BW??B??W??B??W?","?????W???????W?????W????B?????B??W??","???????B?B?BWB?BWB??W??B??????????W?","???W?W???W??B????W?WB?B????W??BWB??W","????????W????B???B???????B???B?B??WB","???W??BW?W???WB?B?B??W?WB?????B?B???","??W??????B??W?W?????W?W???WBW?W?WBW?","B???B??????WB??W?????????WBWBW???W?W","??W??B?????????B?BW?W???WBW??B??????","??????B??W???????WB?????BW??B?B????W","W?????W???????W??BWB?BW?W???W?WBW???","B?B???????????BW?????WB?B?B??W???WBW","W???????????W????B???BW??????B??W?WB","??B??W???W????B??W??B??W?WBW?????W?W","?????B?B????WBW?????WB??W???W??B?B??","?W?W??BW??B????W??B??WBW??BW???WBW??","??W?W?????WB??W????B???BWB?BWB??W?W?","??B??W??????BW???W??????????B?B??WBW","?B??W????B???B???B????W?WB?BWB??????","BWB??????W????B??W?????W??BW??B????W","?B?B????????W?W?W????B?BWBW?????WB?B","??B??????W???W??B?BW???W??B????WB???","????W?W????BWBW?????WB??W??B?BW?W???","B?B?B???B??WB???BWBWB?????B???B???B?","??????W?W?WBWBW?WB?B?????????BWBWB?B"}

Returns: "Possible"
{"WB?BWB?BWB??WBW?WB??W?WBW?WB???BW??B?BWBWBWBWBWBW","B?B??WBWB?BWBWBWBWB?B?B?BWB??W?WBW?W?WB????W?WB?B","?B?B?B?BWB?BWB??WBWB?BWBWB?B?BWBWB?B???BWBWBWBWBW","BWB?BWB?BWBWBWBWBWBWBWB?BWBWBWB?B??WBW?WB?BWBWBWB","W?WB??WB?BWBWBWBW?WBWB?BWBWB?B?B?BWBWBWBWB?BW?WBW","BW?WBWBW?WBWBWBWBW?WBWBWBWBWBWBW?WBWBWBWBWBWB?B?B","WBWBWBWB?BWBWB?BW?WBW?WBWBWB?BWB?BWB?BW???W?WBWBW","BWBW?WBWB?BWBWBWBWBWBWBW?WB?BWBWB?BWBWBWBW?W?WBWB","?BWBWBWB??WBWB?BW?WBW??BWBW?WBWBWBWBWBW??BWBW?WBW","BWBW?WBWBWBWBWBWBWB?BWBWBWBWBWBW???WBWBW??B?BW?WB","WBWBWBWB?BWB?BWBWBWBW??BWBWBWBWBWBWBWBWB??WBW?WB?","BWBWBWBWBWBWBWBW?WBW?WBW?WBWB??WBWBWBWBWBWBWB?BWB","?BW??BWBW?WBWBWB??W???WBWB?B?B??WBWBW?WBWBWBWBW?W","BWBW?WB?B?BWBW?W??BWB?BWB?B?BWBWBW?WB?BW?W?WBWBWB","W?WBWBWBWBWB?BWB??WB??W??B?BWBWBW?WBWBW?W?WBWBWBW","BW?????WBWBWBWBWB?BWBWBWBW?WBWB?BWBWBWBWBWBWBWBWB","WB??WBWB??WB?BWBWBWBW?WBW?W??BWBW?W?WBWBWBW?W?W?W","?W?W?WBWBW????B??WBWB?B?BWBWBWBWBWBWBWBWBW?WBWBWB","W?WB??WBWBWB?B?BW?W?WBWBW?WB?BWBWBW?WBWBWBWBWBW?W","??B?BWBW?WBWB?B?BW?W?WB?BWBWBWBWB?BWB?BWBWBWBW?W?","WBW?WB?BWBWBWBWBWBWBWBWBWBW???WB?BWBWBWBWBWBWBWBW","BW?WBWBWBWBWBWB??WBW?W?W?W?WBWBWBWBWB?BWB?BWBWBWB","WB?BWB??WBWBWB?BWBW?WBW?W?WBWBWBWBWB?B???BWBWB?BW","?WBW?WBW?WBW?WBWBWBWBW?W?WBWB?B?BWB?BWBWBWBWBWBWB","?B??WBWBWBWBWBWBWBWBWBW?WB?BW?WBWBWBWBWBWBWBWB?BW","B?B???BWBW?WBWBWBWB?BWB??WBWB?B?B?BWBWBWBWBWBWB??","WBW?W?W?WBWBWB?BW?W?W?WBWBWBWBWBW???WB?B?BWBWBWBW","BWBWBWBW?WBWBW?WBWBWB?BWBWBWBW?WBWBWB?BWBWBWBW?WB","??W?WBWBWBWBWBWBWB?BW?WBWBW?WBWBW???WB?BWBWBWB?BW","B?BWBWB??WBWBWBWBW???WBWB?BW?WBW?WBWBWB?B?BWBWBWB","W??BWBWB??WBWBWB??WBWB?BW?WBWBWBWBW?WBWBWBWBW???W","B?BWBWBW?W?W?WBW???W?WB?BW?WBWBW??B?BWBWBWBWBWBW?","W?WBWBWBW??BWBWBWBWB?BW?WBWBWBWBWBWB?BWBWBWBWBW?W","BWBW?WB?BW?WBWBWB?BWB?BWBWBWB??WBWBWBWBW??BW??B?B","WBWBWBW?WB?BWBWB?BWB??WBW?WB?BW?WBWBWBW?W?W?WBWB?","BWBWB??WBW??BWB??WBWBW?W?WBW?WBWBWBW??BWBW?W?WBWB","W?WBWBWBWB?B?B?BWBWBWBW??BW?WBWBWBWBWBW?WB?BWBWBW","BWBWBWBW???WB?BW?WBWBWB??WBWB?BWBW?WBWBW?WB?BWBWB","?BWBWBWBWBW?WB???BWBWBW?WB??WB??W?WBWB?BWBW?WBWBW","B??W?W?W??BWBWBWB?BWBWBW?WBWBWBWBWBWBWB?B?B??W???","WBWBW??BWBWBWB?BWBWBWB???BWBW?W?WB?BW?WBW?W?WB?BW","BWBW?WBWB?BW??B?BWBW?W?W??BW?W?WB?BWBW?WBWB?BWBW?","W??BW?WBWBW?WBWBWBWBWBWB??W?W?WBWBW?W?W?W???WBWBW","?WB?BWBWBWBW?WB?BWBWBWBWBW?WBWBWBWBWBWBWBW??B?BWB","WBW?W?WB??WBWB?B?BW?WBW?WBWBWBW?WBW?WB?BW?W??BWBW"}

Returns: "Possible"
{"?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","????????B","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","?????????","??????W??","?????????","?B???????","?????????","?????????","?????????","?????????","?????????","?????????"}

Returns: "Possible"
{"?WBWB??WB?B??W?WB?B?BW?W","WBWBWB?B??WB?B?B?B?B?BW?","B?BWB??WB?B??WBW?WB??W?W","?BWBWBWBWB??W?WBWBWBWB?B","BWB?B???BWBWBWBWBWBW?WBW","??WB?BWBWBWBW????BWBWBW?","B?BW????BWBW??BWB?BWBWBW","?B?B?BW?WBW?WBW?WBWBWBWB","BWBWB?BWB???BWBW?WBWBWBW","WB??W?WBWBWBWB?BW?????WB","B??WBWBWB?BW?W??BWB?BWBW","?BWB?BWBW?WBW??BWBWBWBWB","B??WBWB?BWB???BWB?BWBWBW","WB?BW?WBW???W?W??BWBWBWB","BWBWBWBW?W??BWB?BW??BWBW","WB??W?WBWBW?WBWBWBWB?B??","B?BWBWBWB?BW?WB??WBWBWB?","WB?BWB?B??WB?BWB?B?BWB?B","?WBWBWBWBW?WBWB?BWBW?WB?","WBWBWBWB?B?BW?WBWBWBW?WB","B?BWB??WBWBWBWBWBWBW?W?W","?B?B??W?WBWB?BWBW??BWBWB","BWBW??BWBWBWBWBWBWBWBW?W","WB?B??WBWBWBWBW?WB?B?B?B","BW?WB?B?BWB??WBWBWB??WBW","W?WBWBW?WB?BWBW??BW?W?W?","BWBWBWBWBWBWBWBWB?BWB?B?","?BWBWBWB?BWBWB?BWBWBWBWB","BWBW?W?WBWB?BWBW?WBW?WBW","WBWB?BWBWB?BW?WB?BWB???B","B?BWBWBW?WBW??B?B??W?W?W","?BW?W?WBWBWBWB?BWBWBWBWB","??BWBWB?BWB?B?BWBWBWBW?W","WBW?W?WB?BWBWBWBW???WBWB","BW?W??BWBW?W?WBW?W?WBWBW"}

Returns: "Possible"
{"?B?BWBWBWBWBWB?BWBWB","B?BWBWBW?WBWBWBWBW??","W?WBWBWBWBWBWBWBWBWB","?WBWBWBWBW??BWBWBWBW","W?WBWBWBWBWBWBWBWBWB","?WBWBWBW?WBWBW?WBWBW","?BWBWB?BWBWBWBWBW?W?","?W?WBWBW?WBWBWBWBWBW","W?WBWB?BW?WBWBWB?BWB","BWBWBWB?BWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWB","?WBWB?B?BWBWB?BWBWBW","WBWBWB?BWBWBWBWBWB?B","?WBWBWBWBW?WBWBWBWBW","WBWBWBW???WBWBWBWBWB","BWBWBWBWBWBWBWBWB?BW","W??B?BWBWB?BWBW?WBWB","?W?WBWBWBWBWBWBW?W?W","?BWBW?W?WBWBWBWB?BW?","BWBWBWBWBWBWBWBWBW?W","WBWBWBWBW?WBWBWBWBWB","BWBWBWBWBWBW?WBWBWBW","WBWBWBW??BWBWBWBWBWB","???WBWBWBWBWBWBWB?B?","WB?BWBWBWBWBWBW?WBWB","BWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBW?WBWBW","W?WBWBWBWBWBWBWBWBWB","BWBWBWB?BWBWB?BW??BW","WBWBWBWBWB?BWB?BWBWB","BWBWBWBW?WBWBWBWBW?W","?BWBWBWBWBWBWBWBW?WB","BW?W?WB??W?WB?BWBWBW","WBWBWBWBWBWBW?WBWBWB","BWBWBW?WBWBWB?BW?WBW","WBWBWBWBWBWBW?W?W?WB","B?BWBWB?BWBW?WBWBWBW","?BWBWBWB?BWBWBWBW?WB","B?BWBWBWBWBWBWBWBW?W","WBWBW?WB?BWBWBWBW?WB","BWBWBWBWBWBWB?BW??B?","WBWBWBW??BWBWBW?WBWB"}

Returns: "Possible"
{"BW?WBWB?B??WBW?WBWBWBW????BWBWBWBWBW?WB?B?B","WB?B?BWBWB?BW?W?WB?B???B?B?BW?WBWBWBWBW??B?","BW??B?B?BWB?B??W?W??B??WB??W?WB?BWBWB?BWB??","??W?WBWBWBW?WBWB?B?B???BWB?B?B??WBW??BW?W??","BWBWB?BW??B??W??BWBWBW?WB?BWBW?W?WBWB?B?BWB","W?W?WB?B?B?B??W??BWBWB??WBW???WB??W??BWBW?W","?W?WB?B?BW?W?WBW???W?WBW?W??BW??BW??BWBW?W?","??WB??W?WBW?WB?BWBWBWBWB?BW?W?W?WBWB?BW??BW","?WBWB?BWBW?WBWB??W??B?B?BWBWBW??B?B???????B","WBW?WBW?WBW??????????B??WB?B????W?WBWB?B?BW","B?B??W??BWB?BW??BWBWB?B?B????W?WBW????B?BWB","W??BWB???BWBW?W??B?BWBWBW??B??W??B?BW?W?WBW","B?BW???WBW?WBW?WBW?WBWBW??BWBWBW?W?WBWBW?W?","WB?B????W?WBW?W?W????BWBW???WB?BWBWBWBW?W??","BW?WBW?W?W?W?WB??WBW?WB?BWBW?W???W?W?WB?BWB","?B??WBWBW?WBWBWBW??B??W??B??W?WBW?W?WB?BW??","??BWB??WB??WB??WB??W?W?WB?BW?WB??W?W?WBW?W?","WB?B?B?BW???WBW?WB??WBW?W?W???WBW?W??BW?WB?","BWBW?W?WB??WB?BWBW?WBWBW?W??BW?WBWBWBWBWB?B","WBWB??WB?B???BWBW????BWBW?W????B???BWBW????","BWBWBW??BWBW?W???W?W??B?????BWB?BWBW????BWB","WB??WBWBWBWBW?W??B?BW?WB??WB?B?B?BW?W?WBWBW","?W?W???W?W?WB?BWBWBWB??WBWB???BWB??WBW?WBWB","?BWBWB?BWBWBWB?BWB??WB???BWB?B?B?B?B??W?W??","B??WBWB??WB?BWB??W?WBWB?BWBWBWBWB?????BWB?B","WB?????BWBWBWB???BW???W??BW??B???BW???W?W??","??BWB?BWBWBW???W?WBWB?B?B?B??WBWBW?WBW?W???","W?WBW???W?W?W?W?W?WBWBW?WB?BW?W??B??WBWBWBW","BWB?BW?W?WBWB?BWBWBWB?BW???W?WB?B??WBWB??WB","WBWB?BWB?BWB?BWBWB?BW?W???WBWB??WBW??B?B?BW","BWBWBW?WBW??BWBWBW?W?W??BWBWBWB???????B??W?","??W???WB?B?B?B???B?BW?W??????B?BW???WB??W??","?W?W?W???W?W??BWB?BWBWBWB?B?B??WBWB??WBW?WB","?????B?BWB?B?BWB?BWB????W??B???BW?WBW?WB??W","???WB?B??WBWBWB?BWBW???WBW??BWB?BW?W?W?W?W?","WBWBW??BW?W???WBW??BW?WB???BWB?B?B?BWBW?WB?","?W?WB???BW?W?W?WBWB?BWBWBW???W?WBWB???BWBWB","WB?BWBW?WB?B???B?BW??????BWBW?WBWBWB?B?????"}

Returns: "Possible"
{"?W??BWB?BW??B?BW?WB??W?WB?BW??BW??B??W?"}

Returns: "Possible"
{"?B???????????????BW???????????????????","????B??????W??????BW??BWB?B???????B?B?","?B?????????????????????B??????????????"}

Returns: "Possible"
{"?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????","?????????????"}

Returns: "Possible"
{"BW?WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","??WB?BW??BWBWBWBWBWBWBWBWBWBB?WWWB","BWBWBWBWBWBWBWBWBWBWBWB?BBBWBWBWBW","WBWB?B?BWBWBWBW?WBWBWBWBWBWBWBWBWB","BWBW?WBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWW?BWBWB?BWB?BWB?BWBWBWBWBBBW?","BBBWBWBWWWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWWWBWBWBWBWBW?WBWBWBBBWBWBWB","BWBWB?BW?WBWBWBWBWBWBWBWBWBWBWBWB?","WBWBWB?BWBWB?BWBWB?B?BWBWBWBWBWBWB","BWBWBWBWBWBWBWB?BWBWBWBWBWBWBWBWBW","WBWWWBWBWBWB?BWBBBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBW?WBW?WBWBW?WBWWWB??W","WB?B?WWBWBWBWBWBWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWB?BWBWBWBWBW?WBWBWBWBW","WBWBBBWB?BWBWBWBBBWBWBBBWWW?WBWBWB","BWBWBWWWWWBWBWBWBWBWBWBWBWBWBWBWBW","WBWB?WWBWBWB?BWWWBWBWBWBWBWBBBWBWB","BWBWB?BWBWBWBWBWBWBWBW?WBB??BWBWBW","WBWBWB?BW?WBWBWBW?WBWBWBWBWBW?BBW?","BWBW?WBBBWB?BWBWBWBWBWBWBWBW?W??BW","WBWBWBWBWBW?WBWBWBWBWBWBWB?BWBWBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBBB?BW?WBWBWBWBBBWB","BWBW?W?WBWBWBWBWBWBBBWBWBWBWBWBWBW","WBWBWBWBWBW?WBW?WBWBWBBBW?WBW?WBWB","B?BWBW?WBBBWBWBWBWBWBWBW?WBWWWBWBW","WBWBWBWBW?WB?BWBWBWBWBBBWBWB??WBWB","BWBW??BWBWBWBWBWB?WWBWBWBWBWBWBWBW","WBWBBBWBWBWBWBWB?BWBWBWBWB?BWBWBWB","BWBWBWBWBWBWBWB?BWBWBWBWBWBWBWBWBB"}

Returns: "Impossible"
{"???B???B?B?B??WB????W??BWB??W?W?WBB??B?B?B??","???W?????W??BWB??W?W???W??????BW?????????W??","?????BW????B????????WB??????W??W???B??W?W???","B?B?BWB????WBW???W?W????B?B??WBWB????W???W??","WB???????B??W??BW?W?W??B???B?B?B?B?????????B","???WB??WB??WB?B??????W??BW??B??W?WB?B??W???W","??W????B??WBW?W??B?B???B?B?????B??W???WB????","?WBW?W???WBW??BWB??W???W???WB????WBW??B??W??","W??BW????BW??B???B??????????WBW?W????????B??"}

Returns: "Impossible"
{"W??B???BW????????????B????W?????W??B??W???????W?","????B?????????????B??????????W??????????????????","?BW?????????W????????????B????????????????W?????","??B??????????????W??????BW????????????B?B???????","?????????????????B?B????W????????B?BB?W?????WB??","???W????????????????????????B????????????W??????","?B???????????????????B??????????????????????????","???????W????B?????????????????BW???????W?????W??","W?????W?????????????????????W??B????????????????","?????????W??B???????B??????????????????W????????","??????W????B???B??????????W???W????????????????B","B??B????????????????B??????W????????????B???????","????????????B??????W????W??????B???BW???????????","????BW??W????W????????B????????????WB???????????","?????????B????W?????????W?????????????W??????B??","???????????????WB?BW??????????????????????B?????","B?B????????????????????????B?B??W???????????????","???????????????????W?????????W??????????????B???","???????B???B????????W?????????W????????B????????","????????????B???B?B??????W??????????????????????","????????W???W?????????????????????W??????B??????","??????B????????????????????????W???????W????????","?B???????????????B????W?????W???????W???W???????","??????B????????????????????????W???????????????W","????????????????W??????????BW???????W???????????","????B????????W???W?????????????????????????????W","????????????????W???????W?W????????????????B????","???W????????B??W???????W??????????B??W??????B?B?","W???????????????????????????W?WB????W???????W???","BW?W???????W????B????????????????????W??B???????","????W????BW?W????????B??????????W????????????B??","?????????????????W??????????????????????????????","??????????????W???????????????W?W???????W??B????","??????????B?B????W???????W????????????B??W???W??"}

Returns: "Impossible"
{"WB?BW?WBW?W?WBWB?B?B?BWBWBW?WBW?W?WBWB?BW?WB","BW?W?WBWBWWWBW?WBWBWBWBWB?BWWWBWBWB????WWWBW","W?WBWBW??BWBW?W?W?WB?B?BWB??WBWBBB??WBWB???B","BW??BBBW?WBW?WB?B?B?BB?WBWBW?WBWB?BW??BWBWBW","WBWBWBWBWBWB?B?B??WBWBW?WBW?WBWB?W?B??WB?BWB","BWWW??BWB??W??BWBWB?BWBW??BWBWBWB?BWB?B??WBW","WBWB?BBBWBBBWBWBWBWBWB?BWBWBWB?B?BWBWBWBWW?B","B?B?BWB?BWBWBWBWBWW??WB?B??WB???BBB?BWBW??BW","?BWB?B?BWBWB?BW????BW?W??BWB?B?W?B???BW?WBWB","BWBWB?BWB???BWBW?WB?BWBW?WBWBWBWBWBW?WBW??B?","WBW??BW??B?B??BBWB?BWBW?WBWBW??BW?W?WB?BWB?W","BWB?B?BWB???BW?W?WBW?WB?B?BB??B?B???B??W?B?W","WWWBWBWWWBWB?BWBWBWBWBWBWB??W??BWBW??BWBWBWB","BWBWB?BWB?BWB?BB??BW?WB?BWBW?W?W?W??BWBWBW?W","?BWBW??BWBW?WBWBWBWB?BWB?BWBWBWBW?W?W?WBWBW?","BW?W?WBWBWBWBWB?B????WB?B?BW?WBW??BWB?BWBWB?","BBWBWBW?WBWBW?W?WBW???W??BBBWB?BWBWBW?WW??WB","BW?WW??WBWBWBWBW????B?BWB??WBWBWBWBWBWBBB?BW","W??B?WWBWB?BWB?B?B??WB?B?B?B?BW??BW?WB?BWB?B","BWWWBWBWBW?WBWBW???WB?B?BW??B??WB?BWB??WBW?W","WB?BW?W??B?BWBWBWB?BWB??WB????WBW?W?W??BW??B","?WBBBW?WBWBWBW??BWB??WW??WBW?W??BW?W?WBWB?BW","W?W?W??BB?WBWBBB?BWBWBWBW???W?W?WBWBWB?BWBWB","BWBWBWB?BWBWB?B????WBWBWB???BW?WBWBWB????B?W","WB?B?B?BWBW?W??BW?WB?BWBWBWBW???WBWB?BWBWB?B","B?BWBB??BW?WBWBWBW?W?BB????WBWBWBWBWBW?W?WBW","?BW?WBWB??WBW??BWB??WB?BB?W?WBW?WBWBW?WBW??B","?WBBBW??BW?WBWBWB?B?BW?W?WB?BWBW?WBWBWBW?W?W","WBWB?BW?WB?BWBWBWBW??BWB?BWBWBWB?B?BWB?B?BWB","B?B??W??BWBW????BWBWB?B??WW?BWBWBWWWBWBWBW?W","W?W?WB?BW???WBW?WWBB?B?BWB?BW?WBW?BB??WBWBWB","BWB???BW??B?BWWWBWB?BWB?BWBWBWB?B?B?BWBWBW?W","?B?BW?WB??W??B???W?WW?WBWB?B??????WBWBW?WBWB","B?BWB?BWBBBW??BWW?BW??B?B?BW???WBWB?WW?W?WBW","??WBWW???BW?WBWB?BWBWWWBWB?BWBW??B??W??BW?WB","B?BWB?BWW?B?BWBW??B??BB?BWBWBWBWB?BWB??W?WBW","WBWBW?W??BWB?BWBWB?B???B?B?BWB???BWB?BWBWBW?","B?BW?W??BWBWB?BWBWBW??BWBWBWBWBWB??WBWBWBWBW","WW??W??BWBW?WBWBWBWB?B?BWB?B?BW?WBWW?WW??BW?","B?BW??BB?WBWBWB?BW?WBW?WBWBWB??WBW?WBWBW?W?W","?B?BW??BB?WBWBW??BWBWWW?W?WBWBWBW?WBWBBBWBWB","BB??BW?W?W?WBW?WB?BW?B?WWWBWB?BW??BW??BW??BW","WB?W?B?B?B?B?BWBWBWBWBWB?WBBWBW?WB??WBWBWB?B","B?WWBWB?BWB??W?WB?BWBW?WBWBWBWB?BBBW?WB?BWBW"}

Returns: "Impossible"
{"??????????W","?W?????????","????????W??","BW??BWB??W?","???B???????","???W??B????","????W???BB?","B?????BW???","WB???????BB","??????????B","??W?W????B?","B????W?WW??","???????????","???????????","???????????","?????W?W???","W????B?B???"}

Returns: "Impossible"
{"W??","B?B","WB?","BW?","?BW"}

Returns: "Possible"
{"?W?????????????????????W??B??","?????????????????????????????","?????????????????????????????","??W????????????B???B?????????","????B??????????????W?????????","?B??????????????????????B????","?????????????????????????????","?????????????????????????????","???????????????W?????????????","??W????B?B?????B?????????????","???W???W?????????????????????","??????????W????W?????B?????BW","?????????????????????????????","WB?B??????W?????????????W????","???W???W?????????????????????","?????????????????????????????","?????????????????????????W???","??????????????W??????????????","??????????B??????????????????","????????????W??????????B?????","??B?BW???????????????????????","???????????B???????B?B???????","??????????B???????????B??????","?????????????????????????????","B???????????????????B????????","????????????????????WB???????","?????????????????????????????","?????????????????????????????","??B??????????????????????????","????W???W???????B????????????","????B??????W?????????????????","?????????????W????????W??????","????B?????B??W??B????????????","?????B??????????W????????????","???????????????????W?????????","????????W?????????????W??????","?????????????????????????W???","?????????????????????????B???","????????????????????????????B","?????????????B???????B???B???","????B????????????????????????","???????????B?????????B????W??"}

Returns: "Impossible"
{"B??W????BW??????B??????WB?B??W????BW??????B","????????W?W?W????B?B??W???W?W???W??B??W???W","?W??B???B??W????????B?????B??W?????W??????B","W?????WB?BW???B?WB???B????BBW?????????W?W?W","??B?B????????W??B????W???????W??????BW?????","W?W??B??????W??????BW?W??????WWB?B?BW??B???","?W?W??B?????BW????B???B???B?B???BW??????B??","??W?W?????W???W????B?B?B????????????WB???B?","B??W?W????????????B???????BW???W??????????B","W???W??B?B?B??W?WBB?????W???????WBWB?????BW","?????W???W?WBW?????W???W???????W???????????","????WBW???W?????W??????B???????????B???B?B?","?W???WB??WB???????B???B?B??W??B???BW????B??","?B???WW??B????W????B?????WBBWBW?W?????????W","?W??B??W??B??????????WB???????????B?B????W?","???W??????????W????B??W????????B??W???WB?B?","??B??????????W????B??????????W???W?W???W?W?","???????????W?B??W????B??W?????W?W?W????????","?W????BWB????W?W???W?????W???B????B???B????","??W????BW???W?????????WB???BW??????B?B?????","B??WBWBW?B?W??????????B???BW???B??B??WB????","W??????????B???????BWB?W???BWB??WB???BW??B?","???W?????????????????W??????B??WB?B????W???","??W?????W?W??B????W??B????W?W??B?B???BW???W","B?B??W??B????WB???????BB?????W?W??????B????","?B????W???????????B????????B??W???WBW??BW??","????????B?????B?BW?W?W????B?B???B?BW???W???","???????????????B?B????WB????W???W???????WB?","?W?????????B?WB????????WBBB?B?BW???B???????","????B???W?W????B???W??????????WW???B???????","???B??B?B???B?B??????W????BW?W???WB?????B?B","????W???????????W?W????????????B??W??????BW","???????B????B????W??????BW?????W?W?B?W????B","??WB?????BW????????????????????????????B?B?"}

Returns: "Impossible"
{"???WB?BWB????W??BWB??WB?????????BWB?B????","??W????B???BW??B??WW???B?B??W??W?????B???","?????WB?BB??B??W?????W???W?W?W???W???????","W?????????W??????B?B??W????BW???WB?????B?","?WB???B?B??????W????B??W????????????B??W?","?B?B????WB?B?B??????W??BW???????????WB???","????????????B???B??W????B?B????W?W?W?W???","??W?W?WBW???WB??WBW?W????B??WBWB???B?B???","?W??BW???W???W??B??W?????????W????B??????","??WBWB??????W??BW???????W?WB??????W?W????"}

Returns: "Impossible"
{"????B?B","?B??W??","B???BW?","WBW????","WW???W?","??????W","B??WB?B","W????B?","W?B??W?","WB???BW","BW?WB??","???????","????BW?","?B????W","B???BW?","W??B?B?","B??W???","?B?B?B?","B??W???","???B??W","BW?W?WB","?BB??BW","BW?W???","??W????","?W????B","?????B?","?????W?","?B??W?W","?WBW???","?????BW","??B?BW?","W??B?BW","B???B??","?B????W","??B????","??W??W?","??????B","??W???B","?B?????","?????WW"}

Returns: "Impossible"
{"WBWBWBWBWBWBWBWBWWWBWBWBWBWBWBWBWWWBWBWB","BBBWBWBWWWWBBBBWBWBWBWBWBWBWBW?WWWBWBWWW","WWWBWWWBWBWBWBWBW?WBWBWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBBBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBBBWBWBWBWBWBWBWB?BWBWBWBWBWBWBWB","BWBW?WBWBWBWBWBWBWBWBWBBB?BWBWBWBWBWBWBW","WBWBWBBBWBWBWBWWWBWBWBWBWBWBWBWWWBWBBBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBBBWBWBWBW","BBWBWBWBWBWBBBWBWBBBWBWBWBWBWBWBWBWBWBWB","BWBWBWBW??WWB?BWBWBWBWBWBWBWBW?WBWBWBWBW","WBWBWBWBWBBBWBWBWBWBW?WBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","?BWBWBWBWBWBWBWBBBWBWBWBWBWBWBWBWBWBWBWB","BWBWBWBBBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WWWBWBWBWBWBWBW?WBWBWBWBWBWBWBWBWBWBWBWB","WWBWBWWWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWBWWWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBBBWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB??WBWBWB","BWBWBWBWBWBWWWBWBWBWBWBWBWBWBWBWBBBWBWBW","WWWBWBWBBBWBWBWBWBWBWBWB?BWBWBWBWBWBWBWB","BWBW?WB?BWBWBWWWBWBWBWBWBWBWBWBWBWBWWWBW","WBWBWBWBWBWB?BWBWBWBWBBBWBWB?BWBWBWBWBWB","WWBWBBBWBWBWBWBWBWBWWWBWBWBWBWBWWWBWBWBW","WBWBWBWBWBWBBBWBWBWBWBWB?BWBWBWBWBWBWBWB","BWBBBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBBBWBWBBBWBWBWBWBWBWBWBWB","WWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBBBWBWBWBWBWBWBWBBBWBWBWBWBWB","BWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWW","BWWWBWBWBBBWBWBWWWBWBBBWBWBWBWBWBBB?BWBW","WBWBWBWBWBWBWBWBWBWBWBWWWWW?WBWBWWWBWBBB","WWBWBWBWBWBWBWB?BWBWBWBWBWBWBWBWBW?WBWBW","WBWWWBWBWBWBWBWBWBWBWBWBWBWBWWWBBBWBWBWB","BBBWBWBWWWBBBWBWBWBWBWBWBWBW?WBWBWB?BWBW","WBWBWBBBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB","BWBWBWWWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB?","WBWBWBWBWBWBWBWWWBWBBBBBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBWWWBWBWBWBWBWBWBWBWBWBWBWWW","WBWBWBW?WBWBWBWBWBWBWBWBWBWB?BWBWBWBWBWB","BWBWBWBWBW?WBWBWBWWWBWBWBW?WBWBWBWBWBWBW","WBWWWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB","BWBWBWBWBWBWBBBWBWBWBWBWBWBWBWBWBWBWBWBW","WBWBWBWBBBWBWBWB?BWBBBWBWBWWWBWBWBWBWWWB"}

Returns: "Impossible"
{"WBW?WB?BWB???B???BWBW?WBWBWBWBWBWBWBWBWBWBW?BBW?WB","BB??BWBWB?BW?WB?B??BBBBWBW????BW?WBWBWBW?W?W??BWBW","?BWB?BW?WB???BWBW?WBW?WB?B?B?????BWBWBW??BB?WB?BW?","BWB?BWB?BW?WBW?W?WB?BWBW?W??BWB?BWBWWWBW?WBWBWBWBW","WW?BW?WBW?WB?BWWWB??W?WBWBWBWB?BWBWB?BWBWB?BW?WB??","B??W?WB?BWB?BWBWBWB??WBB?WBWBW?W?WBW?WB?BWB??WBWBW","?BWBWBWBWBBB?B?BWBWB???BWB?WWB???B??W?WBWBWBWB?BWB","B?BWBWB?B??WBWBWBWBWB?BW?WBWBWB??W??BWBW???WBWBWBW","W?WBWBWBWBWBWBWB?BWB??WBWB?B??WBB?WBW?WWW?WBWBWBW?","BWBWBWBWWWBWBWBWBWB?BWBWB?BWBWBWB??BBWB??WBWBBB?B?","WBWBWB??WB??W?WBWBWBWBWB??WBWW??WBWB?BWBW??BWBW??B","??BWWWBB??BWBW?W??B?BWWWBWBWBBB??WBWBW?WBW?WW?BW?W","WBWBWB??W???WBW?W?WBW?W?WBBBWBWBBB??WBW??BWBW?BB?B","????B?BW?WBB?BBWBWB?????BW?W?WB?B??B?W???W?BBWBWBW","??WBWBWBW?WB??WBWBW?W?WBWB??WBW?WBWBW?WBWBWBWBWB?B","BWBW?W?WBWBW?W?WBW??B?BW???WBW?W?W??BWBW?WBWBW??BW","??WBWBWBWBW?W?WBW??BWBWBW?WBWBWBWB?BWBWB?B?BWBW???","B?B???B?BWBWBWB?WWBWBWB?BW?BBWBW?WBW?WBWB?BWBWBWB?","WBW?WBWBWB?BW?W?B?WBW??B?BWBW??B??WBW??B?BWBWW?BBB","B?BWBW??BWB?BWBWBWB?BWBW?BBWBWBWBW?WBWB?BW?B??BWBW","WBW?WBWBWBWBW???WBWW?B?BW?WBWBWBWB?BWWW?????W?WBW?","B??WBWBWB?B?B???BWBWWWBWWWBWB?BWBW?WB?B??WB??WBWB?","W?W?WBWBWBBBWB??W???WBWBWBWB???B?BBW?BWBWBW?W?WBWB","??BWBWBWBWBWBWBW??BWBWBW?WB?BWBWBWB?BWB??WBWB??WBW","?B?BW?????WBWB?BWBW?W?WB?BWB?BWBWBWBWB?BW?WBW?W?WB","?WBWB?BW????BWBWB???BWBWBWBW?WBWBWBWBWBWBWBW???W?W","WB?BW??BWBWB?BBB?BWBWB?BW??BW?W?W?W?WBWBW?WB?BW?WB","B?B?BWBWBWB??BBWBW?WBWBWBWB?BWBW?WBWBWBW??B?BWBWB?","W?WB????W?W?W?WB?BWW??W?WBWBWB?BWBW?WBWBWBW?W?WBWB","BWB?B?B?BWBWBWBWBWBWBW???W???W?W?WB?B??WBWBWBW??BW","WBWBWB????WBWBWBW?WB?B?BWB?BWBW???WBWBWB?BW?WBWBWB","B?BWBWB?BWBWBW?WB?BWBW?WBWBWB?BB?W?WB?BWW??WBW?WBW","WB?B?B?BWBWBW??WWBW?WB?BWBWBWBWBW?WBBBWBW?WW?B?BWB","BW?WBBWW?WB??WBW?WB?BWB??WBWBWB?BWBW?WB?BWBWBWBW?W","WBWB?B??WBWBWWW?WBWBW?????WBWWW?W?WB??WB?B??WB?B?B","??BW?WBW?WBWBWBWBWBWBWBWBW?WB?BWB?BWBW?WBWBWBW?WBW","W??B?BW?WBW?WBWBWBWB?BWBWB?BW???WBWB???BW??BW?WBWB","B??WB??WBWBWB?BWBWBWBWWWBWBWBWBWBWBWBWBW????BWBWBW"}

Returns: "Impossible"
{"W?WB?BW?WB","BBBWBWB?BW","W??BWB??WB","BWBW?WBWW?","?BWB?BW??B","B?BWBWBWBW","W??BW?W?W?","BW?WBWBW?W"}

Returns: "Impossible"
{"BWB?????BW?????WB????????WW?BW","W???W???W??B?B?B???BB?B?W??B??","??BWB??????W?B??BWBW?????W?WB?","????B????B?BW??B?????????B????","B?B?B??WBW???W?????W?W?????W??","??W?W?????W???WB????W?WB??W???","?W?????W??????BW????B?????B?B?","W??W?B?B??WB?WW?????W???W??B??","??????????W????WB?B?B?B?BW???W","W?????????WB????W?WBWW?B?BWB??","?WBW??BB?W??BB????BW????BW???W","?BW?WB???B???B???????B?B??WBWB","?W??W??W?WB?????W????W???W?WB?","?B?W???????B?BWB?B??????????W?","BW????B??????W?????????????WB?","????W?WBW????B????W??B?B??W?WW","??????????BW??????BB????BWB???"}

Returns: "Impossible"
{"???W?WW","W??B?BW","BWB?BWW","????WB?","?WBWBWW","??W?WB?","BWB??WW","?B????W","BW?WBW?","W?W?W??","BW???WB","?BWB?B?","WWB?WW?","?BWBW?B","B?B??WB","W???W?W","BW?WBWB","WBWB???","B?B??W?","?B?BWBW","???W?WB","W?WBW??","?WBWBWB","BB?B??W","BWBW?WB","W???WWW"}

Returns: "Impossible"
{"BWB?BW","WBW?WB","B?BBBW","WBWB?B","B?BWBW","WWWBWB","BWBWBW","WBWBWB","WW?WBW","WBWBWB","?WB?BW"}

Returns: "Impossible"
{"?B??B?W?W?????????W????BW?W??????B?BW??????B?B","B?????B???????BWB??????WBWB????WB??W??????????","WB????W?W???WB??W???????????W????????????BW???","?W??B?????B??WB??W???WB?????????B???????????B?","???B??W???????WB????????W?????W??B?B?B??W??B??","???W????B??????W?W?????W??????????B???BW?W????","W???W?????WB?????B??W????????BW??BW?W?W?W?????","B?BWB??WB???B??????WB????W???????????W??????BW","???????????????B??W?WB????W?????????????WB??W?","B?????BW???W?W????B?B??????W???W??B??W?W????B?"}

Returns: "Impossible"
{"WB?BW??B?BWBW?WBW?W","BWBWB?BWB?B?BWBWBWB","BBWB?BBB???WWB???B?","B?BWBWBWB???BWBWBB?","WBWB??WB?B??WB?BWB?","?WBWBBBWBWBWBWBW?W?","WBW??BWBW?W?B?WBWBW","BWB?BW?BB??W?WB??WB","WB???BWBWB?BWBWBWBW","BWBB?W?WB?BWBWB?BWB","W?WBW?WBWB?B?BW???W","?WBWB?BWBWBWBWBWBWB","WBWBWBWWW?WBW??BWB?","BW?W?WB?BW?WBW??BWB","?BWBWB?B?BWBWBWBWBW","??BWB?BWB?BW?WBWBWB","?BW?W?W?WBW??????BW","BWB??WB?BBBWBW??BWB","WB?B?BWBWBWW?BW?WBW","BWBW?W??BWBWBW??BWB","WBW?WBWBBB??WBWBWBW","BB?BBWBBB?WWB??WBWB","BBWBW?WB?BWBWBWBWBW"}

Returns: "Impossible"
{"BB?B?????????B???WWB?B","???B??B?BW?W??B?B?B?BW","?B??W?WB????W?WBWB????","???W??????B?????BWB???","WB?B?BW??B????W?W????B","???WB????????W?????W??","WWW?????WB?B?BW?????W?","B?????????B?B???????B?","?B??????????W???W?????","??BW???WB???????BW?W?W"}

Returns: "Impossible"
{"?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????","?????"}

Returns: "Possible"
{"W???", "??B?", "W???", "???W" }

Returns: "Possible"
{"WW" }

Returns: "Impossible"
{"W?W", "??B", "???" }

Returns: "Possible"
{"??" }

Returns: "Possible"
{"W????", "?????", "?????", "?????", "??B??" }

Returns: "Impossible"
{"W", "W" }

Returns: "Impossible"
{"WBW", "WBW", "WBW" }

Returns: "Impossible"
{"?B" }

Returns: "Possible"
{"B" }

Returns: "Possible"
{"W??W" }

Returns: "Impossible"
{"??WB" }

Returns: "Possible"
{"??", "??", "??", "??", "??" }

Returns: "Possible"
{"WBB" }

Returns: "Impossible"
{"W???B", "?????", "?????" }

Returns: "Impossible"
{"W", "W", "W" }

Returns: "Impossible"
{"????W" }

Returns: "Possible"
{"???", "??W" }

Returns: "Possible"
{"WWW" }

Returns: "Impossible"
{"WB", "WB" }

Returns: "Impossible"
{"??B", "??W" }

Returns: "Possible"
{"???", "???", "???" }

Returns: "Possible"
{"W", "?", "B" }

Returns: "Impossible"
{"B???", "B???", "B???" }

Returns: "Impossible"
{"B", "B" }

Returns: "Impossible"
{"?" }

Returns: "Possible"
{"BB" }

Returns: "Impossible"
{"??B" }

Returns: "Possible"

Statistics

Problem Statement for "BichromeBoard"

Problem Statement

Definition

Constraints

Examples