MESON Chess Problem Database

Problem Display
PID: 12284 (8/7Q/K7/2k1P3/2p2N2/8/8/2B5 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1977

8/7Q/K7/2k1P3/2p2N2/8/8/2B5

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Ba3+?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kd4!
    • 1.Be3+?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kb4!
    • 1.Qd3?
      • threat
        • 2.Qd6#
      • 1...Kb4
        • 2.Qa3#
      • 1...Kc6
        • 2.Qd6#
      • 1...c3
        • 2.Qxc3#
      • 1...cxd3!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Kd4!
  • Keys
    • 1.Qh3!
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kc6
        • 2.Qc8#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);P-FLIGHT::QAR1(E)
        • P(a);OGATEB::QAR2(E),XP(a)
      • Refutation
        • P(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT::QAR2(E)
      • P(a);OGATEB::QAR2(E),XP(a)
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