r1b2b1r/2ppkp1p/p6n/P4p2/1pPP4/3R1p1P/1P2Q1P1/2B1KBNR b K - 0 20
FEN state: r1b2b1r/2ppkp1p/p6n/P4p2/1pPP4/3R1p1P/1P2Q1P1/2B1KBNR b K - 0 20 ; Best move: f3e2
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black king at e7, black pawn at f7 and black pawn at h7. Black pawn at a6 and black knight at h6. White pawn at a5 and black pawn at f5. Black pawn at b4, white pawn at c4 and white pawn at d4. White rook at d3, black pawn at f3 and white pawn at h3. White pawn at b2, white queen at e2 and white pawn at g2. White bishop at c1, white king at e1, white bishop at f1, white knight at g1 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.