MESON Chess Problem Database

Problem Display
PID: 12155 (3K3Q/2p5/2N5/1pPk1bRN/1P6/3p4/3P4/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1975

3K3Q/2p5/2N5/1pPk1bRN/1P6/3p4/3P4/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qg8#
  • Tries
    • 1.Se7+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Ke6
        • 2.Qf6#
      • 1...Ke4!
    • 1.Rxf5+?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qg8#
      • 1...Ke4
        • 2.Sg3#
        • 2.Qe5#
      • 1...Ke6
        • 2.Sg7#
        • 2.Sd4#
        • 2.Qe5#
        • 2.Qf6#
      • 1...Kxc6!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Kxc6!
    • 1.Qf6?
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kc4!
  • Keys
    • 1.Qa1!
      • 1...Kc4
        • 2.Qa2#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Ke6
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(d),S_FLIGHT::QAB(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);N_SPINB(d),S_FLIGHT::QAR1(H)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT
    • Try
      • R(D);CHECK,XB(d)
      • Refutation
        • K(c);S_FLIGHT,XS(F)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);N_SPINB(d),OGATE,S_FLIGHT::QAB1(H)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT,XS(F)
    • Try
      • Q(H);
      • Vars
        • K(c);N_SPINB(d),S_FLIGHT::QAB1(H),XB(d)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(c);N_SPINB(d),S_FLIGHT::QAB(H)
      • K(c);N_SPINB(d),OGATEB,S_FLIGHT,XS(F)::QAB(H)
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