MESON Chess Problem Database

Problem Display
PID: 105466 (2q5/8/8/6Q1/8/2R1PP1k/8/6K1 w - - 0 1)

Pypa, Volodimir Iosifovich

Kertsensky Rabotsin, 1991

2q5/8/8/6Q1/8/2R1PP1k/8/6K1

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4+
      • 2.Qxg4#
    • 1...Qa6
      • 2.Qg4#
    • 1...Qb7
      • 2.Qg4#
    • 1...Qxc3
      • 2.Qg4#
    • 1...Qc5
      • 2.Qg4#
    • 1...Qc6
      • 2.Qg4#
    • 1...Qc7
      • 2.Qg4#
    • 1...Qa8
      • 2.Qg4#
    • 1...Qb8
      • 2.Qg4#
    • 1...Qd8
      • 2.Qg4#
    • 1...Qe8
      • 2.Qg4#
    • 1...Qf8
      • 2.Qg4#
    • 1...Qh8
      • 2.Qg4#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Qh6#
        • 2.Qg3#
        • 2.Qh5#
      • 1...Kh2
        • 2.Qg2#
      • 1...Qf5
        • 2.Qg3#
      • 1...Qa6
        • 2.Qg3#
        • 2.Qh5#
      • 1...Qe6
        • 2.Qg3#
        • 2.Qh5#
      • 1...Qc4
        • 2.Qg3#
      • 1...Qc5
        • 2.Qg3#
      • 1...Qc6
        • 2.Qg3#
        • 2.Qh5#
      • 1...Qc7
        • 2.Qh6#
        • 2.Qh5#
      • 1...Qb8
        • 2.Qh6#
        • 2.Qh5#
      • 1...Qd8
        • 2.Qg3#
      • 1...Qe8
        • 2.Qg3#
      • 1...Qf8
        • 2.Qg3#
        • 2.Qh5#
      • 1...Qg8
        • 2.Qh6#
        • 2.Qh5#
      • 1...Qh8
        • 2.Qg3#
      • 1...Qg4!
    • 1.Rc4?
      • threat
        • 2.Rh4#
        • 2.Qh4#
        • 2.Qg2#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qd8
        • 2.Rh4#
        • 2.Qg2#
        • 2.Qg4#
      • 1...Qg8
        • 2.Rh4#
      • 1...Qh8
        • 2.Qg2#
        • 2.Qg4#
      • 1...Qxc4!
    • 1.Rc6?
      • threat
        • 2.Rh6#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qxc6
        • 2.Qg4#
      • 1...Qa6
        • 2.Qg4#
      • 1...Qe8
        • 2.Qg4#
      • 1...Qf8
        • 2.Qg4#
      • 1...Qh8
        • 2.Qg4#
      • 1...Qe6!
    • 1.Qf4?
      • threat
        • 2.Qh2#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qc7
        • 2.Qg4#
      • 1...Qb8
        • 2.Qg4#
      • 1...Qg8+!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Rh2#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qxc2
        • 2.Qg4#
      • 1...Qc7
        • 2.Qg4#
      • 1...Qb8
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(b);CHECK,N_GUARD::QAB1(E),XQ(b)
    • Q(b);N_GUARD::QAB1(E)
    • Q(b);N_GUARD,XR(B)::QAB1(E)
    • Q(b);N_GUARD,P_PINP(C)::QAB1(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • Q(b);P_PINP(D)::QAR1(E)
        • Q(b);::QAR1(E)
        • Q(b);P_PINP(C)::QAR1(E)
      • Refutation
        • Q(b);
    • Try
      • R(B);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB1(E),XQ(b)
        • Q(b);P_PINQ(E)::R1(B)
      • Refutation
        • Q(b);XR(B)
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB1(E),XQ(b)
        • Q(b);N_GUARD,XR(B)::QAB1(E)
        • Q(b);N_GUARD::QAB1(E)
      • Refutation
        • Q(b);
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB1(E),XQ(b)
        • Q(b);N_GUARD::QAB1(E)
      • Refutation
        • Q(b);CHECK
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • Q(b);CHECK,N_GUARD::QAB1(E),XQ(b)
      • Q(b);N_GUARD,XR(B)::QAB1(E)
      • Q(b);N_GUARD::QAB1(E)
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