MESON Chess Problem Database

Problem Display
PID: 245974 (8/K7/4Q3/1p5R/bk6/8/8/1N6 w - - 0 1)

Murashev, Pavel Aleksandrovich

Sem Shakhmatnikh not, 2014

8/K7/4Q3/1p5R/bk6/8/8/1N6

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qe1#
  • Tries
    • 1.Rh4+?
      • 1...Ka5
        • 2.Qa6#
        • 2.Qb6#
      • 1...Kc5!
    • 1.Qe1+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kb3!
    • 1.Qe2?
      • 1...Ka5
        • 2.Qe1#
        • 2.Qd2#
      • 1...Bd1
        • 2.Qxb5#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qxb5#
      • 1...Kb3!
    • 1.Qe4+?
      • 1...Ka5
        • 2.Qe1#
      • 1...Kb3!
    • 1.Qe5?
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Ka5
        • 2.Qc3#
        • 2.Qe1#
      • 1...Bd1
        • 2.Qxb5#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qxb5#
      • 1...Kb3!
    • 1.Qc6?
      • threat
        • 2.Qc3#
      • 1...Ka5
        • 2.Qc3#
      • 1...Bd1
        • 2.Qxb5#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qxb5#
      • 1...Kb3!
  • Keys
    • 1.Qd5!
      • 1...Ka5
        • 2.Qd2#
      • 1...Bd1
        • 2.Qxb5#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Bb3
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • B(a);N_GUARD::QAR1(C),XP(c)
        • B(a);N_GUARD,SBLOCK::QAR1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • B(a);N_GUARD::QAR1(C),XP(c)
        • B(a);N_GUARD,SBLOCK::QAR1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
        • B(a);N_GUARD::QAR1(C),XP(c)
        • B(a);N_GUARD,SBLOCK::QAR1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P_SPINP(c),S_FLIGHT::QAB(C)
      • B(a);N_GUARD::QAR1(C),XP(c)
      • B(a);N_GUARD,SBLOCK::QAR1(C),XP(c)
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