MESON Chess Problem Database

Problem Display
PID: 274248 (8/2R5/8/4kB2/3N4/8/1Q5K/8 w - - 0 1)

Petrasinovic, Petrasin

Seven Chess Notes, 2023

8/2R5/8/4kB2/3N4/8/1Q5K/8

#2

5 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Se6+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qd4#
      • 1...Kxf5!
    • 1.Qc1?
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qc3?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qg2?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kd6!
    • 1.Qb4?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kf4!
    • 1.Qb6?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf4!
  • Keys
    • 1.Qa3!
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(C)::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
      • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • K(a);N_GUARD,P-FLIGHT::QAR1(A)
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