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Problem Display

PID: 147635 (8/5n2/8/7N/6Bk/5P2/4K3/2Q5 w - - 0 1)

Stosic, Miroslav

Mat, 1969

8/5n2/8/7N/6Bk/5P2/4K3/2Q5

#2

5 + 2

5454	Near Snap	2026

SOLUTION

SOUND
Sets
- 1...Sg5
  - 2.Qe1#
Tries
- 1.Qd2?
  - 1...Se5
    - 2.Qd8#
  - 1...Sg5
    - 2.Qe1#
  - 1...Sh6
    - 2.Qd8#
  - 1...Sd8
    - 2.Qxd8#
  - 1...Sh8
    - 2.Qd8#
  - 1...Sd6!
- 1.Qe3?
  - 1...Sg5
    - 2.Qf2#
  - 1...Sd6
    - 2.Qe7#
  - 1...Sh6
    - 2.Qe7#
  - 1...Sd8
    - 2.Qe7#
  - 1...Sh8
    - 2.Qe7#
  - 1...Se5!
- 1.Qa1?
  - 1...Kg5
    - 2.Qf6#
  - 1...Sg5
    - 2.Qe1#
  - 1...Sd6
    - 2.Qf6#
  - 1...Sh6
    - 2.Qf6#
  - 1...Sd8
    - 2.Qf6#
  - 1...Sh8
    - 2.Qf6#
  - 1...Se5!
- 1.Qc3?
  - 1...Kg5
    - 2.Qf6#
  - 1...Sg5
    - 2.Qe1#
  - 1...Sd6
    - 2.Qf6#
  - 1...Sh6
    - 2.Qf6#
  - 1...Sd8
    - 2.Qf6#
  - 1...Sh8
    - 2.Qf6#
  - 1...Se5!
- 1.Qc5?
  - 1...Se5
    - 2.Qe7#
  - 1...Sg5
    - 2.Qf2#
  - 1...Sh6
    - 2.Qe7#
  - 1...Sd8
    - 2.Qe7#
  - 1...Sh8
    - 2.Qe7#
  - 1...Sd6!
- 1.Qc7?
  - 1...Se5
    - 2.Qd8#
    - 2.Qe7#
  - 1...Sg5
    - 2.Qg3#
  - 1...Sd6
    - 2.Qd8#
    - 2.Qe7#
  - 1...Sh6
    - 2.Qd8#
    - 2.Qe7#
  - 1...Sd8
    - 2.Qxd8#
    - 2.Qe7#
  - 1...Sh8
    - 2.Qd8#
    - 2.Qe7#
  - 1...Kg5!
Keys
- 1.Qf4!
  - 1...Se5
    - 2.Qf6#
  - 1...Sg5
    - 2.Qg3#
  - 1...Sd6
    - 2.Qf6#
  - 1...Sh6
    - 2.Qf6#
  - 1...Sd8
    - 2.Qf6#
  - 1...Sh8
    - 2.Qf6#

This anticipates 283046(1994)

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
Sets
- S(b);SBLOCK::QAB(A)
Tries
- Try
  - Q(A);
  - Vars
    - S(b);N_GUARD::QAB(A)
    - S(b);SBLOCK::QAB(A)
    - S(b);N_GUARD::QAB(A),XS(b)
  - Refutation
    - S(b);
- Try
  - Q(A);
  - Vars
    - S(b);SBLOCK::QAB(A)
    - S(b);N_GUARD::QAB(A)
  - Refutation
    - S(b);
- Try
  - Q(A);
  - Vars
    - K(a);S_FLIGHT::QAB1(A)
    - S(b);SBLOCK::QAB(A)
    - S(b);N_GUARD::QAB(A)
  - Refutation
    - S(b);
- Try
  - Q(A);
  - Vars
    - K(a);S_FLIGHT::QAB1(A)
    - S(b);SBLOCK::QAB(A)
    - S(b);N_GUARD::QAB(A)
  - Refutation
    - S(b);
- Try
  - Q(A);
  - Vars
    - S(b);N_GUARD::QAB(A)
    - S(b);SBLOCK::QAB(A)
  - Refutation
    - S(b);
- Try
  - Q(A);
  - Vars
    - S(b);SBLOCK::QAB1(A)
  - Refutation
    - K(a);S_FLIGHT
Actual
- Q(A);
- Vars
  - S(b);N_GUARD::QAB(A)
  - S(b);SBLOCK::QAB1(A)

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