Chart (Diagram) 11.                                                   Chart (Diagram) 12.

Pr or Ps is on the horizontal b3. Rectangle 5 х 4 Pr or Ps is on the horizontal c3. Square 5 х 5

   Control of cells: + Control of cells: +

    a2,a3,a4,b1,b2,b4,b5,c2,c3,c4,d1,d3,d5 -     13 cells.       a1,a3,a5, b2,b3,b4,c1,c2,c4,c5,d2,d3,d4,e1,e3,e5 – 16 cells.

    Cells under control:          9 white and 4 black cells.         Cells under control:       4 white and 12  black cells.

    Not controlled cells: =    a1,a5,c1,c5,d2,d4 - 6 cells.         Not controlled cells: = a2,a4,b1,b5, d1,d5, e2,e4 - 8 cells.

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Extended Centre - c3, c8, h8, h3 is strategically important as it is in this very center where the maximum impact force of these figures is manifested. Together they can control 32 сells of the chess field. The Prince or princess, standing on these cells, controls the quarter of a chessboard.

For comparison: The impact force of the queen standing in the small center is 35 cells and control of the whole chess board. The impact force of an elephant standing in the small center is 17 cells and control of the whole chess board, but only on white or black squares. The impact force of a prince or princess, standing in the extended or small center is 16 fields and control of both white and black cells, but with the limitation in the territory. A Prince or a princess can announce mat to the opponent's king. Consequently, they can be attributed to the heavy pieces, but because of their limitations in the territorial impact they should be called light heavyweight.

"Losing Position"

The Black have a prince.                                                         The Black have no prince.

When the white king moves to h5, h6, the Black must                 When the white king moves to h5, h6, the Black must

take the white king, but the new white king falls                  take the white king, but at the same time they put

under a check first. It’s a "Losing Position" state.                  their king under a check. This position is called

The White lost:                                                                                 a "Losing Position".        The Black lost:

their new king is the first to get under a check.                          their king is the first to get under a check.

In this position it is strictly forbidden to put white                             In this position white made the right move.

king under the check. White made the wrong move.                                                                                                                

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Black has a huge material advantage.                                   Black has a huge material advantage.

Itiswhite’smove. Find the checkmate in two moves.           Itiswhite’smove. Find the checkmate in three moves.