MESON Chess Problem Database

Problem Display
PID: 239260 (2R5/3p4/8/2pk4/5K2/7Q/2N5/B7 w - - 0 1)

Murashev, Pavel Aleksandrovich

Sachove umeni (Ceskoslovensky sach), 2009

2R5/3p4/8/2pk4/5K2/7Q/2N5/B7

#2

5 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxd7#
    • 1...d6
      • 2.Se3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qxd7#
      • 1...d6
        • 2.Qf5#
      • 1...Kd6!
    • 1.Sd4?
      • 1...Kc4
        • 2.Qb3#
      • 1...cxd4
        • 2.Qxd7#
      • 1...c4
        • 2.Qxd7#
      • 1...d6
        • 2.Qe6#
      • 1...Kd6!
    • 1.Rc7?
      • 1...Kd6
        • 2.Qxd7#
      • 1...c4
        • 2.Qxd7#
      • 1...d6
        • 2.Se3#
      • 1...Kc4!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc4!
  • Keys
    • 1.Qe3!
      • 1...Kc4
        • 2.Rxc5#
      • 1...Kd6
        • 2.Qe5#
      • 1...d6
        • 2.Qe4#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAR2(C),XP(c)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(C),XP(c)
      • Vars
        • P(c);SBLOCK::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(C)
        • P(a);XS(B)::QAR2(C),XP(c)
        • P(a);::QAR2(C),XP(c)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT::QAR1(C),XP(c)
        • P(a);::QAR2(C),XP(c)
        • P(c);SBLOCK::S(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::R1(E),XP(a)
      • K(b);P-FLIGHT::QAB1(C)
      • P(c);SBLOCK::QAB1(C)
      • P(a);::QAR1(C)
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