MESON Chess Problem Database

Problem Display
PID: 269227 (8/8/8/Q3p3/3Nk3/4P1K1/2P5/8 w - - 0 1)

Petrasinovic, Petrasin

Seven Chess Notes, 2021

8/8/8/Q3p3/3Nk3/4P1K1/2P5/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Kxe3
        • 2.Qe1#
        • 2.Qxe5#
      • 1...Kf5!
    • 1.Sf3?
      • threat
        • 2.Qxe5#
      • 1...Kxe3
        • 2.Qe1#
        • 2.Qxe5#
      • 1...Kf5!
    • 1.Sc6?
      • threat
        • 2.Qxe5#
      • 1...Kxe3
        • 2.Qe1#
      • 1...Kf5!
    • 1.Se6?
      • 1...Kxe3
        • 2.Qe1#
      • 1...Kf5!
    • 1.Qc3?
      • 1...Kd5
        • 2.Qc6#
      • 1...exd4!
    • 1.Qb6?
      • 1...Kd5
        • 2.Qc6#
      • 1...exd4
        • 2.Qe6#
      • 1...Kxe3!
    • 1.Qa2?
      • 1...exd4
        • 2.Qe6#
      • 1...Kxe3!
    • 1.Qb5?
      • 1...Kxe3
        • 2.Qd3#
      • 1...exd4!
  • Keys
    • 1.Qa6!
      • 1...Kxe3
        • 2.Qd3#
      • 1...Kd5
        • 2.Qc6#
      • 1...exd4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(E),XP(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR2(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR2(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • P(b);XS(D)
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
        • P(b);OGATEB,XS(D)::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • P(b);OGATEB,XS(D)::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(B)::QAR1(E)
      • Refutation
        • P(b);XS(D)
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,P-FLIGHT,XP(B)::QAR1(E)
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • P(b);OGATEB,XS(D)::QAR2(E)
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