1rqk4/p2p1ppr/b1p1p2p/R2n4/1pPPPP1N/4bN2/1PQ1B1PP/2BK3R b - - 6 23
FEN state: 1rqk4/p2p1ppr/b1p1p2p/R2n4/1pPPPP1N/4bN2/1PQ1B1PP/2BK3R b - - 6 23 ; Best move: b4b3
The current state of the chess board is: Black rook at b8, black queen at c8 and black king at d8. Black pawn at a7, black pawn at d7, black pawn at f7, black pawn at g7 and black rook at h7. Black bishop at a6, black pawn at c6, black pawn at e6 and black pawn at h6. White rook at a5 and black knight at d5. Black pawn at b4, white pawn at c4, white pawn at d4, white pawn at e4, white pawn at f4 and white knight at h4. Black bishop at e3 and white knight at f3. White pawn at b2, white queen at c2, white bishop at e2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 6. Full move number is 23. Black to move.