MESON Chess Problem Database

Problem Display
PID: 238218 (5K2/8/4R1bk/7p/Q7/8/8/7R w - - 0 1)

Murashev, Pavel Aleksandrovich

Kudesnik, 2012

5K2/8/4R1bk/7p/Q7/8/8/7R

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...h4
      • 2.Qxh4#
  • Tries
    • 1.Kg8?
      • threat
        • 2.Qf4#
      • 1...h4
        • 2.Qxh4#
      • 1...Kg5!
    • 1.Rf1?
      • 1...Kg5
        • 2.Qf4#
      • 1...h4
        • 2.Qxh4#
      • 1...Kh7!
    • 1.Rg1?
      • 1...h4
        • 2.Qxh4#
      • 1...Kh7!
    • 1.Rh4?
      • 1...Kg5
        • 2.Qf4#
      • 1...Kh7!
    • 1.Rf6?
      • 1...Kg5
        • 2.Qf4#
      • 1...h4
        • 2.Qxh4#
      • 1...Kh7!
    • 1.Qc2?
      • threat
        • 2.Qxg6#
      • 1...Kh7
        • 2.Rxh5#
      • 1...Kg5!
    • 1.Qb5?
      • threat
        • 2.Rxh5#
        • 2.Qxh5#
      • 1...h4
        • 2.Rxh4#
      • 1...Kh7!
    • 1.Qd4?
      • 1...Kh7
        • 2.Qg7#
      • 1...h4
        • 2.Qxh4#
      • 1...Kg5!
    • 1.Qg4?
      • threat
        • 2.Rxh5#
        • 2.Qxh5#
        • 2.Qxg6#
      • 1...h4
        • 2.Rxh4#
        • 2.Qxh4#
        • 2.Qxg6#
      • 1...Kh7!
    • 1.Qa5?
      • threat
        • 2.Rxh5#
        • 2.Qxh5#
      • 1...h4
        • 2.Rxh4#
      • 1...Kh7!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qxg6#
      • 1...Kg5
        • 2.Rxg6#
      • 1...Kh7
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAR2(B),XP(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Vars
        • K(c);N_SPINB(b),S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(C);
      • Vars
        • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(b)
      • Vars
        • K(c);P-FLIGHT::R(A),XP(a)
      • Refutation
        • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XB(b)
    • Vars
      • K(c);N_SPINB(b),N_SPINP(a),S_FLIGHT::R1(C),XB(b)
      • K(c);P-FLIGHT::R(A),XP(a)
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