MESON Chess Problem Database

Problem Display
PID: 12213 (1Q6/2p1pp2/3kPp2/5B2/2K3P1/8/8/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1976

1Q6/2p1pp2/3kPp2/5B2/2K3P1/8/8/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qxc7#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd4#
        • 2.Qxc7#
      • 1...Kc6
        • 2.Qa6#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qb8#
      • 1...fxe6!
    • 1.Qb4+?
      • 1...Kc6
        • 2.Be4#
      • 1...c5
        • 2.Qxc5#
      • 1...Ke5!
    • 1.Qb5?
      • threat
        • 2.Qc5#
        • 2.Qd5#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qb8#
      • 1...fxe6!
    • 1.Qb6+?
      • 1...Ke5
        • 2.Qd4#
        • 2.Qxc7#
      • 1...c6
        • 2.Qb8#
      • 1...cxb6!
    • 1.Qd8+?
      • 1...Ke5
        • 2.Qxc7#
        • 2.Qd4#
      • 1...Kc6!
  • Keys
    • 1.Qc8!
      • 1...Ke5
        • 2.Qxc7#
      • 1...Kc6
        • 2.Qa6#
      • 1...fxe6
        • 2.Qxe6#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(E),XP(c)
  • Tries
    • Try
      • Q(E);N_PINP(c)
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
        • P(c);::QAB1(E),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(E)
      • Refutation
        • P(e);XP(D)
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Vars
        • K(a);P-FLIGHT::B(C)
        • P(c);P_SPINP(c)::QAB1(E),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(E),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(E)
      • Refutation
        • P(e);XP(D)
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(E)
      • Refutation
        • P(c);XQ(E)
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);N_PINP(c)
    • Vars
      • K(a);S_FLIGHT::QAB(E),XP(c)
      • K(a);P-FLIGHT,P_SPINP(c)::QAR2(E)
      • P(e);OGATE,XP(D)::QAR1(E),XP(e)
      • P(c);OGATE::QAB1(E),XP(c)
      • P(c);OGATEB,SBLOCK::QAB(E)
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