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Problem Display

PID: 24977 (8/5Q2/1K1k4/3N4/N2Pr3/8/8/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

4th HM., Goteborg Postens, 1993

8/5Q2/1K1k4/3N4/N2Pr3/8/8/8

#2

5 + 2

SOLUTION

SOUND
Tries
- 1.Sc5?
  - threat
    - 2.Sxe4#
    - 2.Sb7#
    - 2.Qd7#
  - 1...Rxd4
    - 2.Qe6#
  - 1...Re6
    - 2.Qxe6#
    - 2.Qd7#
  - 1...Re1
    - 2.Sb7#
    - 2.Qd7#
  - 1...Re2
    - 2.Sb7#
    - 2.Qd7#
  - 1...Re3
    - 2.Sb7#
    - 2.Qd7#
  - 1...Rf4
    - 2.Sb7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Rg4
    - 2.Sb7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Rh4
    - 2.Sb7#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Re5
    - 2.Sb7#
    - 2.Qd7#
  - 1...Re8
    - 2.Sb7#
    - 2.Qd7#
  - 1...Re7!
- 1.Sf4?
  - threat
    - 2.Qc7#
  - 1...Re7
    - 2.Qd5#
  - 1...Rxf4!
- 1.Sf6?
  - threat
    - 2.Sxe4#
    - 2.Qd7#
  - 1...Re1
    - 2.Qd7#
  - 1...Re2
    - 2.Qd7#
  - 1...Re3
    - 2.Qd7#
  - 1...Rf4
    - 2.Se8#
    - 2.Qd7#
  - 1...Rg4
    - 2.Se8#
    - 2.Qd7#
  - 1...Rh4
    - 2.Se8#
    - 2.Qd7#
  - 1...Re5
    - 2.Qd7#
  - 1...Re6
    - 2.Qc7#
    - 2.Qd7#
  - 1...Re7
    - 2.Qd5#
  - 1...Re8
    - 2.Sxe8#
    - 2.Qd7#
  - 1...Rxd4!
- 1.Sc7?
  - threat
    - 2.Sb5#
  - 1...Rxd4
    - 2.Qe6#
  - 1...Re7
    - 2.Qd5#
  - 1...Re6
    - 2.Qxe6#
  - 1...Re5!
Keys
- 1.Sac3!
  - threat
    - 2.Sxe4#
    - 2.Sb5#
  - 1...Rxd4
    - 2.Qe7#
  - 1...Re7
    - 2.Qxe7#
  - 1...Re1
    - 2.Sb5#
  - 1...Re2
    - 2.Sb5#
  - 1...Re3
    - 2.Sb5#
  - 1...Rf4
    - 2.Sb5#
    - 2.Qe7#
  - 1...Rg4
    - 2.Sb5#
    - 2.Qe7#
  - 1...Rh4
    - 2.Sb5#
    - 2.Qe7#
  - 1...Re5
    - 2.Sb5#
  - 1...Re6
    - 2.Qc7#
  - 1...Re8
    - 2.Sb5#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
Sets
Tries
- Try
  - S(A);
  - Threat
    - DUALS(3)
  - Vars
    - R(a);N_GUARD,XP(B)::QAR1(E)
  - Refutation
    - R(a);
- Try
  - S(C);
  - Threat
    - QAB1(E)
  - Vars
    - R(a);SBLOCK::QAR1(E)
  - Refutation
    - R(a);XS(C)
- Try
  - S(C);
  - Threat
    - DUALS(2)
  - Vars
    - R(a);::QAR1(E)
    - R(a);SBLOCK::QAR1(E)
  - Refutation
    - R(a);XP(B)
- Try
  - S(C);
  - Threat
    - S(C)
  - Vars
    - R(a);N_GUARD,XP(B)::QAR1(E)
    - R(a);SBLOCK::QAR1(E)
    - R(a);N_GUARD::QAR1(E),XR(a)
  - Refutation
    - R(a);
Actual
- S(A);
- Threat
  - DUALS(2)
- Vars
  - R(a);N_GUARD,XP(B)::QAB1(E)
  - R(a);N_GUARD::QAB1(E),XR(a)
  - R(a);::S(A)
  - R(a);SBLOCK::QAB1(E)

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