MESON Chess Problem Database

Problem Display
PID: 263563 (4K3/5Rp1/6kn/7R/8/8/7Q/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

5th Place, SuperProblem 006. TT, 2012

4K3/5Rp1/6kn/7R/8/8/7Q/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rxh6+?
      • 1...Kg5
        • 2.Qf4#
        • 2.Qh4#
        • 2.Qh5#
      • 1...gxh6!
    • 1.Rxg7+?
      • 1...Kf6
        • 2.Qe5#
      • 1...Kxg7!
    • 1.Qg1+?
      • 1...Kh7
        • 2.Qxg7#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxh5!
    • 1.Qg3+?
      • 1...Kh7
        • 2.Qxg7#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxh5!
    • 1.Qc2+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxh5!
    • 1.Qg2+?
      • 1...Kh7
        • 2.Qxg7#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxh5!
    • 1.Qh3?
      • 1...Sxf7
        • 2.Qf5#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf5
        • 2.Qg4#
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qg4#
        • 2.Qf5#
      • 1...Kh7!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Rxg7#
      • 1...Kh7
        • 2.Qxg7#
      • 1...Sxf7
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK,XS(b)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(C);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(c),P_SPINS(b),S_FLIGHT::QAR1(A),XP(c)
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(c),P_SPINS(b),S_FLIGHT::QAR1(A),XP(c)
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(c),P_SPINS(b),S_FLIGHT::QAR1(A),XP(c)
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(A);
      • Vars
        • S(b);N_GUARD,XR(C)::QAB1(A)
        • S(b);N_GUARD::QAR2(A),XS(b)
      • Refutation
        • K(a);P_SPINP(c),P_SPINS(b),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • R1(C),XP(c)
    • Vars
      • K(a);N_GUARD,P_SPINP(c),P_SPINS(b),S_FLIGHT::QAR1(A),XP(c)
      • S(b);N_GUARD,XR(C)::QAB1(A)
      • S(b);N_GUARD::QAB1(A),XS(b)
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