B+pp vs B+p

[Event "Les Blancs gagnent"] [Site "?"] [Date "2018.??.??"] [Round "?"] [White "Villeneuve, A."] [Black "0040.21"] [Result "1-0"] [SetUp "1"] [FEN "8/8/4k3/6PK/P7/b1p5/2B5/8 w - - 0 1"] [PlyCount "9"] [EventDate "2018.??.??"] [SourceDate "2000.07.25"] {There are essentially three candidate moves, the "a" pawn push, the push of the "g" pawn and the activation of the white king. All fail, but it is necessary play a "stupid" move ("mazette sees check, makes check!") after which, depending on where the Black King is placed, the three candidate moves occur. White's plan is to force Black's Bishop to sacrifice himself against a pawn, but he must take care that the square c2 (which his own bishop must control) is on the same diagonal as his remaining pawn, to avoid that wB is deflected by the c3-pawn. They must therefore allow the sacrifice of the bB against the "g" pawn only if the other one has remained on a4.} 1. Bb3+ $3 {This check is the only winning plan, preventing the coordination of the two black figures. It could be made elsewhere, but the other moves are just wastes of time, as the heptocephalic monster confirms.} (1. a5 $2 { (allows for a change of function: the bK takes care of the now weakened 'a' pawn and the FN takes care of the 'g' pawn.)} Kd7 $8 (1... Kd5 $2 2. Ba4 $8 Kd6 3. g6 $18) 2. g6 Bf8 $8 3. Kg4 Kc6 4. Bd3 c2 5. Bxc2 Kb5 $11) (1. g6 $2 Bf8 $8 2. Kg4 (2. a5 Kd6 $1) 2... Ke5 $1 3. Kf3 Bh6 4. Ke2 Kd4 $1 $11 {and the wK does not go to the other side}) (1. Kg6 $6 {(Kh6?! faces the same move)} Bc1 $1 {(the return to h5 is necessary)} 2. Bb3+ $1 (2. Kh5 $1 Ba3 3. Bb3+ $8 {: text}) 2... Ke5 3. Kh5 $8 Bd2 $1 (3... Ba3 $6 4. a5 $8 {: text with delay}) 4. g6 $8 (4. a5 $2 Bxg5 $3) 4... Kf6 5. a5 $8 Be3 6. a6 Kg7 7. Bc2 Kf6 8. a7 $1 Bxa7 9. Kh6 $8 $18) (1. Bb1 $6 {(waste of time)} Bc5 2. Ba2+ $1 (2. Bc2 $1) 2... Ke7 3. Bb3 $8) (1. Bd1 $6 Bc5 2. Bb3+ $8 {is also time wasted}) (1. Bh7 $6 Bc5 2. Bg8+ $1 Ke7 3. Bb3 $8) (1. Be4 $6 Ke5 $1 2. Bc2 $8) 1... Ke5 (1... Ke7 2. g6 $8 {(as there is no longer ...Bf8)} c2 (2... Kf6 3. Kh6 $1 Bf8+ 4. Kh7 $8) 3. Bxc2 $8 Bc1 4. a5 $18) (1... Kd7 2. Kg6 $8 {(wK now accesses f6)} Bc1 (2... Be7 3. Kh6 $8 Bf8+ 4. Kh7 $8) 3. Kf6 $8 $18) (1... Kd6 {(same disadvantage as ...Ke7)} 2. g6 $1 c2 3. Bxc2 $8 $18) (1... Kf5 {(same disadvantage as ...Ke5)} 2. a5 $1 Bc5 3. g6 {followed by kh6}) 2. a5 $8 {The bK no longer fits into the the aP territory.} (2. Kh6 $6 Bc1 3. Kh5 $8) (2. g6 $2 Bf8 $8) 2... Bc5 {Threatens again the relay ...Bd4 & ...Kd6.} (2... Kd6 3. g6 $8 Ke7 4. g7 $1 c2 5. Bxc2 $8 Kf7 6. Kh6 $1 Bb2 7. Bb3+ $1) 3. g6 $8 (3. a6 $6 Be3 4. a7 $1 Bxa7 5. g6 $8 Kf6 6. Kh6 $8) 3... Kf6 4. Kh6 $1 (4. a6 $6 Kg7 5. Kg5 Bb6 6. Kf5 Bc5 7. Bc2 Bb6 8. Ke6) 4... Bf8+ 5. Kh7 $1 {We find the three thematic trials as white second moves on the three main replies of the Black King.} 1-0