MESON Chess Problem Database

Problem Display
PID: 138161 (4k2r/3Np2r/1B1pP2N/8/5Q2/8/8/5K2 w k - 0 1)

Nesic, Milivoj S

Vecherni Novosti, 1963

4k2r/3Np2r/1B1pP2N/8/5Q2/8/8/5K2

#2

6 + 5

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh6
      • 2.Qf7#
    • 1...Rf7
      • 2.Qxf7#
    • 1...Rf8
      • 2.Qxf8#
    • 1...d5
      • 2.Qb8#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qa8#
      • 1...Rf7
        • 2.Qxf7#
      • 1...Rf8
        • 2.Qxf8#
      • 1...d5!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qa8#
      • 1...Rf7+
        • 2.exf7#
      • 1...Rf8+
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,XS(E)::QAB1(B)
    • R(c);N_GUARD,P_PINQ(B)::QAB1(B),XR(c)
    • R(e);N_GUARD,P_PINQ(B)::QAR1(B),XR(e)
    • P(a);OGATE::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • R(c);N_GUARD,P_PINQ(B)::QAB1(B),XR(c)
        • R(e);N_GUARD,P_PINQ(B)::QAR1(B),XR(e)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • R(c);CHECK,OGATE::P(D),XR(c)
      • R(e);CHECK,SBLOCK::QAB(B)+S(F),DCHECK
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