MESON Chess Problem Database

Problem Display
PID: 81218 (8/8/8/1B1p4/Kp3P1R/1P3kpP/4RN2/Q7 w - - 0 1)

Murashev, Pavel Aleksandrovich

Mat Plus, 2008

8/8/8/1B1p4/Kp3P1R/1P3kpP/4RN2/Q7

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kg2
      • 2.Qh1#
  • Tries
    • 1.Kxb4?
      • 1...Kg2
        • 2.Qh1#
      • 1...g2
        • 2.Qc3#
      • 1...d4
        • 2.Qa8#
      • 1...gxf2!
    • 1.Sd1?
      • 1...g2
        • 2.Re3#
      • 1...d4!
    • 1.Se4?
      • threat
        • 2.Sd2#
        • 2.Sg5#
        • 2.Qf1#
      • 1...dxe4
        • 2.Qf1#
      • 1...g2!
    • 1.Sg4?
      • threat
        • 2.Se5#
        • 2.Qf1#
      • 1...Kxf4
        • 2.Qf6#
      • 1...g2!
    • 1.Qd4?
      • threat
        • 2.Qxd5#
      • 1...gxf2
        • 2.Qxf2#
      • 1...g2
        • 2.Qe3#
        • 2.Qd3#
      • 1...Kg2!
    • 1.Qg7?
      • 1...gxf2
        • 2.Qg4#
      • 1...g2
        • 2.Qg4#
      • 1...d4
        • 2.Qb7#
      • 1...Kg2!
    • 1.Qb1?
      • 1...Kg2
        • 2.Qh1#
      • 1...g2
        • 2.Qd3#
      • 1...d4
        • 2.Qe4#
      • 1...gxf2!
    • 1.Qc1?
      • 1...Kg2
        • 2.Qh1#
      • 1...g2
        • 2.Qe3#
      • 1...d4
        • 2.Qc6#
      • 1...gxf2!
    • 1.Qd1?
      • threat
        • 2.Qxd5#
      • 1...Kg2
        • 2.Qh1#
      • 1...g2
        • 2.Qd3#
      • 1...d4
        • 2.Bc6#
      • 1...gxf2!
    • 1.Qf1?
      • threat
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sd3#
        • 2.Se4#
        • 2.Sg4#
      • 1...gxf2
        • 2.Qxf2#
      • 1...g2!
  • Keys
    • 1.Qe1!
      • 1...Kg2
        • 2.Qh1#
      • 1...gxf2
        • 2.Qxf2#
      • 1...g2
        • 2.Re3#
      • 1...d4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAR(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK::R1(B)
      • Refutation
        • P(d);
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(d);XS(C)::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(G)::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(d)
      • Vars
        • P(b);OGATE,XS(C)::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);XS(C)::QAB1(A)
        • P(b);::QAB1(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAR2(A)
        • P(d);N_GUARD::QAB1(A)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAR1(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(d)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAR2(A)
        • P(d);OGATEB::B(I)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(5)
      • Vars
        • P(b);OGATE,P_SPINP(b),XS(C)::QAR1(A),XP(b)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);OGATE,XS(C)::QAR1(A),XP(b)
      • P(b);SBLOCK::R1(B)
      • P(d);OGATEB::B(I)
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