# ♗ Bishop Endgames Universe
## Grand Drill Codex — Volume II
### Positions 71–80 (Complete Move-by-Move Solutions)
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# ♗ POSITION 71
### Theme: King Penetration Through Opponent Bishop
**White to move**
White: King e5, Bishop d5, pawns f5, g5
Black: King e7, Bishop e7
### Solution
1. Ke6!
1… Bb4
2. f6+ Kf8
3. Be4
King penetrates; pawn pushes safely.
**Result:** Winning.
Principle: King penetration first, then pawn breakthrough.
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# ♗ POSITION 72
### Theme: Triangulation Creates Zugzwang
White: King d4, Bishop c4
Black: King d6, Bishop e7
White to move.
1. Bb5!
1… Bf6
2. Be8!
2… Ke7
3. Kc5
Black forced into zugzwang; invasion guaranteed.
**Result:** Winning.
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# ♗ POSITION 73
### Theme: Opposite-Colored Bishop — Breakthrough
White: King f5, Bishop c2, pawns h5, g6
Black: King g7, Bishop e7
White to move.
1. Bb3+ Kh8
2. h6!
2… gxh6 3. Kg6 unstoppable.
2… Bf8 3. g7+ breakthrough.
**Result:** Winning.
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# ♗ POSITION 74
### Theme: Wrong Bishop — Fortress With Rook Pawn
White: King h6, Bishop f5, pawn h5
Black: King h8
White to move.
1. h6 Kg8
Cannot break fortress; promotion square wrong color.
**Result:** Draw.
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# ♗ POSITION 75
### Theme: Outside Passed Pawn
White: King c4, Bishop e2, pawn a6
Black: King c6, Bishop d6
White to move.
1. Bf3+!
2. a7
2… Kb6 3. Kd5 4. Be4 — zugzwang. Pawn queens.
**Result:** Winning.
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# ♗ POSITION 76
### Theme: Long Diagonal Control
White: King g6, Bishop e4, pawn f5
Black: King g8, Bishop c3
White to move.
1. Bd5+!
1… Kf8 2. f6
2… Bb4 — defensive blockade.
**Result:** Draw.
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# ♗ POSITION 77
### Theme: Bishop Activity Over Material
White: King f4, Bishop d3
Black: King f6, Bishop d6
White to move.
1. Ke4!
1… Ke6 2. Bc4+ 3. Bxe6
White wins king + pawn ending.
Principle: Bishop activity outweighs material equality.
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# ♗ POSITION 78
### Theme: Central Pawn Break
White: King e5, Bishop d3, pawn f6
Black: King e7, Bishop e7
White to move.
1. f7! 1… Kxf7 2. Bc4+
King penetrates; pawn advance synchronized.
**Result:** Winning.
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# ♗ POSITION 79
### Theme: King Cut Before Pawn Push
White: King d4, Bishop c4, pawn c5
Black: King d6, Bishop e7
White to move.
1. Kd5!
1… Kc7 2. c6!
King cut; pawn queens.
**Result:** Winning.
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# ♗ POSITION 80
### Theme: Geometric Domination
White: King c6, Bishop a6, pawn b6
Black: King c8, Bishop d4
White to move.
1. Bd5+!
1… Bxb6 2. Bxb6
King cut total, pawn promotes.
**Result:** Winning.
Principle: Bishop + King geometrically trap opponent king.
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# Positions 71–80 Summary
| # | Core Theme |
| -- | ----------------------------- |
| 71 | King penetration before pawn |
| 72 | Triangulation → zugzwang |
| 73 | Opposite-colored breakthrough |
| 74 | Wrong bishop fortress |
| 75 | Outside passed pawn |
| 76 | Long diagonal control |
| 77 | Activity > material |
| 78 | Central pawn breakthrough |
| 79 | King cut before pawn push |
| 80 | Geometric domination net |