input: mh21
SBCH selected.
A1 selected.
TEQO selected.
D4 selected.
SEQO selected.
B4 selected.
TECH selected.
D1 selected.
SBCO selected.
A2 selected.
SECO selected.
B2 selected.
SEQH selected.
B3 selected.
TBQH selected.
D2 selected.
TEQH selected.
B1 selected.

    1    2    3    4
  +----+----+----+----+
a |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
b |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
c |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
d |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+

Available:
SB SB SB SB SE SE SE SE TB TB TB TB TE TE TE TE 
CH CO QH QO CH CO QH QO CH CO QH QO CH CO QH QO 

Player 1's turn to select a piece:
SBCH selected.

Player 2's turn to select a square:
Enter a position:A1 selected.

    1    2    3    4
  +----+----+----+----+
a | SB |    |    |    |
  | CH |    |    |    |
  +----+----+----+----+
b |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
c |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
d |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+

Available:
SB SB SB SE SE SE SE TB TB TB TB TE TE TE TE 
CO QH QO CH CO QH QO CH CO QH QO CH CO QH QO 

Player 2's turn to selec

    1    2    3    4
  +----+----+----+----+
a |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
b |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
c |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
d |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+

Available:
SB SB SB SB SE SE SE SE TB TB TB TB TE TE TE TE
CH CO QH QO CH CO QH QO CH CO QH QO CH CO QH QO

Player 1's turn to select a piece:
SBCH selected.

Player 2's turn to select a square:
Enter a position:A1 selected.

    1    2    3    4
  +----+----+----+----+
a | SB |    |    |    |
  | CH |    |    |    |
  +----+----+----+----+
b |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
c |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+
d |    |    |    |    |
  |    |    |    |    |
  +----+----+----+----+

Available:
SB SB SB SE SE SE SE TB TB TB TB TE TE TE TE
CO QH QO CH CO QH QO CH CO QH QO CH CO QH QO

Player 2's turn to select a