1r1kr3/pppbpp1p/7b/7n/B1PP2R1/1P1p1Pp1/P1NPN1P1/1RBQK3 b - - 5 20
FEN state: 1r1kr3/pppbpp1p/7b/7n/B1PP2R1/1P1p1Pp1/P1NPN1P1/1RBQK3 b - - 5 20 ; Best move: b7b5
The current state of the chess board is: Black rook at b8, black king at d8 and black rook at e8. Black pawn at a7, black pawn at b7, black pawn at c7, black bishop at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black bishop at h6. Black knight at h5. White bishop at a4, white pawn at c4, white pawn at d4 and white rook at g4. White pawn at b3, black pawn at d3, white pawn at f3 and black pawn at g3. White pawn at a2, white knight at c2, white pawn at d2, white knight at e2 and white pawn at g2. White rook at b1, white bishop at c1, white queen at d1 and white king at e1. Both players have exhausted their castles. Half move number is 5. Full move number is 20. Black to move.