[Event "The Problemist "] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "(5) Alain Villeneuve (FRA)"] [Black "?"] [Result "1-0"] [SetUp "1"] [FEN "8/8/4k3/6PK/P7/b1p5/2B5/8 w - - 0 1"] [PlyCount "9"] [EventDate "2018.??.??"] {There are 3 candidates moves : push the "a" pawn, push the "g" pawn or activate the white King. None of them is good, but you must make a "silly" move, a check ("weak players see a check, make a check !") and afterwards, according to the place the black King went, all the candidates moves now occur. The white plan is to force the black Bishop to sacrifice for a pawn, but he must take care that the c2 square (that his own Bishop must control) is on the same diagonal than his remaining pawn, because the WB must not be deflected by the c3 pawn. So White must allow the sacrifice of the BB on the "g" pawn only if the other remained on a4.} 1. Bb3+ $3 {This check is the only winning plan, preventing the coordination of the 2 black figures.} (1. a5 $2 {(allows change of function : the black King is now busy about the "a" pawn, now weaker, and the black Bishop about the "g" pawn)} Kd7 $1 2. g6 Bf8 $1 3. Kg4 Kc6 4. Bd3 c2 5. Bxc2 Kb5 $11) (1. g6 $2 Bf8 $1 2. Kg4 Ke5 3. Kf3 Bh6 4. Ke2 Kd4 $11 {and the white king does not go on the other side}) (1. Kg6 $6 Bc1 $1 2. Kh5 $1 Ba3 3. Bb3+ $1 {: main line}) 1... Ke5 (1... Ke7 2. g6 $1 {(no more ...Bf8)} c2 ( 2... Kf6 3. Kh6) 3. Bxc2 Bc1 4. a5 $18) (1... Kd7 2. Kg6 $1 {(now the King has access to f6)} Bc1 (2... Be7 3. Kh6 $1) 3. Kf6 $1 $18) 2. a5 $1 {The black King does not come any more into the square of the pawn.} (2. g6 $2 Bf8 $1) 2... Bc5 {Threatens again the relay ...Bd4 & ...Kd6.} (2... Kd6 3. g6 $1 Ke7 4. g7 $1) 3. g6 $1 Kf6 4. Kh6 Bf8+ 5. Kh7 {We see the 3 thematic tries as second white moves after the 3 main defences of the black King.} 1-0