MESON Chess Problem Database

Problem Display
PID: 103764 (6B1/2b5/8/4p1Q1/3k4/4R3/8/2K5 w - - 0 1)

Shakhnazaryan, Albert Serapionovic

Flag Rodini, 1990

6B1/2b5/8/4p1Q1/3k4/4R3/8/2K5

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Qxe5#
    • 1...Bb6
      • 2.Qxe5#
    • 1...Bd8
      • 2.Qxe5#
  • Tries
    • 1.Ra3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rb3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rf3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
        • 2.Qg4#
      • 1...e4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rg3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rh3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rxe5?
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Qd2#
      • 1...Kd3
        • 2.Qd2#
        • 2.Qe3#
      • 1...Bxe5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qe3#
      • 1...Kxc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qc5#

FEATURES

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