r1b3q1/pppp1k1r/6pn/4pp1p/nbP3P1/2QPPP1P/PPN1B2N/R1BK3R w - - 12 20
FEN state: r1b3q1/pppp1k1r/6pn/4pp1p/nbP3P1/2QPPP1P/PPN1B2N/R1BK3R w - - 12 20 ; Best move: c3b4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black queen at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black king at f7 and black rook at h7. Black pawn at g6 and black knight at h6. Black pawn at e5, black pawn at f5 and black pawn at h5. Black knight at a4, black bishop at b4, white pawn at c4 and white pawn at g4. White queen at c3, white pawn at d3, white pawn at e3, white pawn at f3 and white pawn at h3. White pawn at a2, white pawn at b2, white knight at c2, white bishop at e2 and white knight at h2. White rook at a1, white bishop at c1, white king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 12. Full move number is 20. White to move.