MESON Chess Problem Database

Problem Display
PID: 254368 (3b4/4k1P1/1PP5/3B2R1/8/8/Q7/4K3 w - - 0 1)

Giurgean, Valeriu

Problemas, 2021

3b4/4k1P1/1PP5/3B2R1/8/8/Q7/4K3

#2

7 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qa3#
  • Tries
    • 1.Qe2+?
      • 1...Kf6
        • 2.Qe5#
      • 1...Kd6!
    • 1.Qf2?
      • threat
        • 2.Qf8#
      • 1...Ke8
        • 2.Qf7#
        • 2.Qf8#
      • 1...Kd6!
    • 1.Qa3+?
      • 1...Ke8
        • 2.Qf8#
        • 2.g8Q#
        • 2.g8R#
      • 1...Kf6!
  • Keys
    • 1.Qa8!
      • 1...Kd6
        • 2.Qa3#
      • 1...Kf6
        • 2.Qxd8#
      • 1...Ke8
        • 2.Re5#
      • 1...Bxb6
        • 2.Qf8#
      • 1...Bc7
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB(B)
      • K(a);N_GUARD,S_FLIGHT::QAB(B),XB(b)
      • K(a);N_GUARD,P-FLIGHT,P_SPINB(b)::R(D)
      • B(b);OGATE,XP(E)::QAB1(B)
      • B(b);OGATE::QAB1(B)
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