MESON Chess Problem Database

Problem Display
PID: 138158 (6Bk/r7/5N2/7N/8/8/8/6QK w - - 0 1)

Nesic, Milivoj S

Vecherni Novosti, 1962

6Bk/r7/5N2/7N/8/8/8/6QK

#2

5 + 2

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qg7#
    • 1...Ra3
      • 2.Qg7#
    • 1...Ra4
      • 2.Qg7#
    • 1...Ra5
      • 2.Qg7#
    • 1...Ra6
      • 2.Qg7#
    • 1...Rg7
      • 2.Qxg7#
    • 1...Ra8
      • 2.Qg7#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
    • 1.Bc4?
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
    • 1.Bd5?
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
    • 1.Be6?
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
    • 1.Bf7?
      • threat
        • 2.Qg7#
        • 2.Qg8#
      • 1...Rxf7
        • 2.Qg8#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
    • 1.Bh7?
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#
      • 1...Ra1!
  • Keys
    • 1.Ba2!
      • threat
        • 2.Qg8#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ra8
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::QAB1(A)
    • R(a);N_GUARD::QAB1(A),XR(a)
    • R(a);N_GUARD,SBLOCK::QAB1(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
        • R(a);N_GUARD,SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
        • R(a);N_GUARD,SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
        • R(a);N_GUARD::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
        • R(a);N_GUARD,SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(E)::QAR1(A)
        • R(a);SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
        • R(a);N_GUARD,SBLOCK::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
  • Actual
    • B(E);
    • Threat
      • QAR1(A)
    • Vars
      • R(a);N_GUARD::QAB1(A),XR(a)
      • R(a);N_GUARD,SBLOCK::QAB1(A)
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