r1b2bnr/p1n1k3/1q1Np1pp/1P3p2/2Bp2PP/NPP1P3/4QP2/R1B2K1R b - - 1 20
FEN state: r1b2bnr/p1n1k3/1q1Np1pp/1P3p2/2Bp2PP/NPP1P3/4QP2/R1B2K1R b - - 1 20 ; Best move: b6d6
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black knight at c7 and black king at e7. Black queen at b6, white knight at d6, black pawn at e6, black pawn at g6 and black pawn at h6. White pawn at b5 and black pawn at f5. White bishop at c4, black pawn at d4, white pawn at g4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at c3 and white pawn at e3. White queen at e2 and white pawn at f2. White rook at a1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. Black to move.