rnb2rk1/3p1p2/6p1/3Ppn1p/1b2P1PN/PPN2P2/1BP4P/3RKB1R b K - 0 20
FEN state: rnb2rk1/3p1p2/6p1/3Ppn1p/1b2P1PN/PPN2P2/1BP4P/3RKB1R b K - 0 20 ; Best move: b4c3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black rook at f8 and black king at g8. Black pawn at d7 and black pawn at f7. Black pawn at g6. White pawn at d5, black pawn at e5, black knight at f5 and black pawn at h5. Black bishop at b4, white pawn at e4, white pawn at g4 and white knight at h4. White pawn at a3, white pawn at b3, white knight at c3 and white pawn at f3. White bishop at b2, white pawn at c2 and white pawn at h2. White rook at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.