r1b2k1r/5pp1/pq1pnn1p/1pP1p3/4P1P1/P1PPbPKP/1B2B3/RN1Q2NR w - - 1 18
FEN state: r1b2k1r/5pp1/pq1pnn1p/1pP1p3/4P1P1/P1PPbPKP/1B2B3/RN1Q2NR w - - 1 18 ; Best move: c5b6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at f7 and black pawn at g7. Black pawn at a6, black queen at b6, black pawn at d6, black knight at e6, black knight at f6 and black pawn at h6. Black pawn at b5, white pawn at c5 and black pawn at e5. White pawn at e4 and white pawn at g4. White pawn at a3, white pawn at c3, white pawn at d3, black bishop at e3, white pawn at f3, white king at g3 and white pawn at h3. White bishop at b2 and white bishop at e2. White rook at a1, white knight at b1, white queen at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 18. White to move.