r1b3nr/1k2pp1p/ppn3p1/2p3P1/1N1b1P1P/3PN3/PP1KP3/R1BQ1B1R w - - 1 20
FEN state: r1b3nr/1k2pp1p/ppn3p1/2p3P1/1N1b1P1P/3PN3/PP1KP3/R1BQ1B1R w - - 1 20 ; Best move: b4c6
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black king at b7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at b6, black knight at c6 and black pawn at g6. Black pawn at c5 and white pawn at g5. White knight at b4, black bishop at d4, white pawn at f4 and white pawn at h4. White pawn at d3 and white knight at e3. White pawn at a2, white pawn at b2, white king at d2 and white pawn at e2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.