MESON Chess Problem Database

Problem Display
PID: 153223 (R7/1k1B3R/2n5/8/K7/8/7Q/8 w - - 0 1)

Turevski, Dmitri Evgenevich

Zhilko, Dmitri Vitalevich

1st Comm., StrateGems 02. Miniature Ty., 2011

R7/1k1B3R/2n5/8/K7/8/7Q/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa8
      • 2.Bxc6#
    • 1...Sb4
      • 2.Qb8#
    • 1...Sd4
      • 2.Qb8#
    • 1...Sa5
      • 2.Qb8#
    • 1...Se7
      • 2.Qb8#
    • 1...Sb8
      • 2.Qxb8#
    • 1...Sd8
      • 2.Qb8#
  • Tries
    • 1.Be8+?
      • 1...Kxa8
        • 2.Bxc6#
      • 1...Se7
        • 2.Qb8#
      • 1...Kb6!
    • 1.Qc7+?
      • 1...Kxa8
        • 2.Bxc6#
      • 1...Kxc7!
    • 1.Qh1?
      • threat
        • 2.Qxc6#
      • 1...Kb6
        • 2.Qxc6#
      • 1...Kc7
        • 2.Qxc6#
      • 1...Kxa8!
    • 1.Qg2?
      • threat
        • 2.Qxc6#
      • 1...Kb6
        • 2.Qxc6#
      • 1...Kc7
        • 2.Qxc6#
      • 1...Kxa8!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxc6#
      • 1...Kb6
        • 2.Qxc6#
      • 1...Kxa8
        • 2.Bxc6#
      • 1...Sb4
        • 2.Qb8#
      • 1...Sd4
        • 2.Qb8#
      • 1...Sa5
        • 2.Qb8#
      • 1...Se5
        • 2.Qb8#
      • 1...Sa7
        • 2.Rb8#
      • 1...Se7
        • 2.Qb8#
      • 1...Sb8
        • 2.Qxb8#
      • 1...Sd8
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XR(E)::B(C),XS(a)
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::B(C),XS(a)
        • S(a);P_SPINS(a)::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::B(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);P_PINS(a)
      • Threat
        • QAB1(A),XS(a)
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
    • Try
      • Q(A);P_PINS(a)
      • Threat
        • QAB1(A),XS(a)
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XS(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::QAR1(A),XS(a)
      • K(b);S_FLIGHT,XR(E)::B(C),XS(a)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD,SBLOCK::R1(E)
      • S(a);N_GUARD::QAR1(A),XS(a)
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