MESON Chess Problem Database

Problem Display
PID: 287471 (8/8/1K2B2P/4k3/5N2/8/3P2Q1/8 w - - 0 1)

Petrasinovic, Petrasin

Sachmatija, 2026

8/8/1K2B2P/4k3/5N2/8/3P2Q1/8

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...Kf6
      • 2.Qg7#
  • Tries
    • 1.Kc5?
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxf4!
    • 1.Kc6?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxf4!
    • 1.Kc7?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxf4!
    • 1.Qb7?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxf4!
    • 1.Qf2?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qg3?
      • 1...Kd4
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kd6!
    • 1.Qg5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Ke4!
  • Keys
    • 1.Qg1!
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAR1(B)
    • K(a);N_GUARD,S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
        • K(a);N_GUARD,P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAR1(B)
      • K(a);N_GUARD,S_FLIGHT,XS(C)::QAB1(B)
      • K(a);N_GUARD,S_FLIGHT::QAB1(B)
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