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Problem Display

PID: 39044 (7k/8/4BKPB/5n2/8/8/8/8 w - - 0 1)

Velucchi, Mario

ARPA Bulletin, 1994

7k/8/4BKPB/5n2/8/8/8/8

#2

4 + 2

2786	More Fun with Chess Miniatures	2000
5454	Near Snap	2021

SOLUTION

SOUND
Sets
- 1...Se3
  - 2.Bg7#
- 1...Sg3
  - 2.Bg7#
- 1...Sd4
  - 2.Bg7#
- 1...Sh4
  - 2.Bg7#
- 1...Sd6
  - 2.Bg7#
- 1...Se7
  - 2.Bg7#
- 1...Sg7
  - 2.Bxg7#
Tries
- 1.Ba2?
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#
  - 1...Sxh6!
- 1.Bb3?
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#
  - 1...Sxh6!
- 1.Bc4?
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#
  - 1...Sxh6!
- 1.Bd5?
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#
  - 1...Sxh6!
- 1.Bf7?
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#
  - 1...Sxh6!
Keys
- 1.Bf8!
  - 1...Se3
    - 2.Bg7#
  - 1...Sg3
    - 2.Bg7#
  - 1...Sd4
    - 2.Bg7#
  - 1...Sh4
    - 2.Bg7#
  - 1...Sd6
    - 2.Bg7#
  - 1...Sh6
    - 2.Bg7#
  - 1...Se7
    - 2.Bg7#
  - 1...Sg7
    - 2.Bxg7#

Anticipated by 206586(1925)

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
Tries
- Try
  - B(A);
  - Vars
    - S(a);N_GUARD::B(D)
    - S(a);N_GUARD::B(D),XS(a)
  - Refutation
    - S(a);XB(D)
- Try
  - B(A);
  - Vars
    - S(a);N_GUARD::B(D)
    - S(a);N_GUARD::B(D),XS(a)
  - Refutation
    - S(a);XB(D)
- Try
  - B(A);
  - Vars
    - S(a);N_GUARD::B(D)
    - S(a);N_GUARD::B(D),XS(a)
  - Refutation
    - S(a);XB(D)
- Try
  - B(A);
  - Vars
    - S(a);N_GUARD::B(D)
    - S(a);N_GUARD::B(D),XS(a)
  - Refutation
    - S(a);XB(D)
- Try
  - B(A);
  - Vars
    - S(a);N_GUARD::B(D)
    - S(a);N_GUARD::B(D),XS(a)
  - Refutation
    - S(a);XB(D)
Actual
- B(D);
- Vars
  - S(a);N_GUARD::B(D)
  - S(a);N_GUARD::B(D),XS(a)

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