1Q1rk1nr/1p4p1/p2b1p2/3p3p/1Q6/R2PBp2/1PPNP2P/1N1K1b1R b k - 0 20
FEN state: 1Q1rk1nr/1p4p1/p2b1p2/3p3p/1Q6/R2PBp2/1PPNP2P/1N1K1b1R b k - 0 20 ; Best move: d6b4
The current state of the chess board is: White queen at b8, black rook at d8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7 and black pawn at g7. Black pawn at a6, black bishop at d6 and black pawn at f6. Black pawn at d5 and black pawn at h5. White queen at b4. White rook at a3, white pawn at d3, white bishop at e3 and black pawn at f3. White pawn at b2, white pawn at c2, white knight at d2, white pawn at e2 and white pawn at h2. White knight at b1, white king at d1, black bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.