MESON Chess Problem Database

Problem Display
PID: 46549 (6bR/4K1kp/8/8/8/8/8/7Q w - - 0 1)

Parkhomenko, Nikolai A

Uralski Problemist, 2002

6bR/4K1kp/8/8/8/8/8/7Q

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh8
      • 2.Qa1#
    • 1...Ba2
      • 2.Qxh7#
    • 1...Bb3
      • 2.Qxh7#
    • 1...Bc4
      • 2.Qxh7#
    • 1...Bd5
      • 2.Qxh7#
    • 1...Be6
      • 2.Qxh7#
    • 1...Bf7
      • 2.Qxh7#
    • 1...h6
      • 2.Qxh6#
  • Tries
    • 1.Rxh7+?
      • 1...Kg6
        • 2.Qh5#
      • 1...Bxh7!
    • 1.Qg2+?
      • 1...Kxh8
        • 2.Qb2#
      • 1...Kh6!
    • 1.Qc6?
      • threat
        • 2.Qf6#
      • 1...Kxh8
        • 2.Qc3#
        • 2.Qf6#
      • 1...Be6!
    • 1.Qg1+?
      • 1...Kxh8
        • 2.Qd4#
        • 2.Qa1#
      • 1...Kh6!
    • 1.Qh3?
      • 1...Kg6
        • 2.Rxg8#
      • 1...Kxh8
        • 2.Qc3#
      • 1...Ba2
        • 2.Qxh7#
      • 1...Bb3
        • 2.Qxh7#
      • 1...Bc4
        • 2.Qxh7#
      • 1...Bd5
        • 2.Qxh7#
      • 1...Be6
        • 2.Qxh7#
      • 1...Bf7
        • 2.Qxh7#
      • 1...h6
        • 2.Qxh6#
      • 1...h5!
    • 1.Qh4?
      • threat
        • 2.Qf6#
      • 1...Kxh8
        • 2.Qf6#
        • 2.Qd4#
      • 1...Kg6!
    • 1.Qh6+?
      • 1...Kxh8
        • 2.Qf6#
      • 1...Kxh6!
  • Keys
    • 1.Qh5!
      • 1...Kxh8
        • 2.Qe5#
      • 1...Ba2
        • 2.Qxh7#
      • 1...Bb3
        • 2.Qxh7#
      • 1...Bc4
        • 2.Qxh7#
      • 1...Bd5
        • 2.Qxh7#
      • 1...Be6
        • 2.Qxh7#
      • 1...Bf7
        • 2.Qxh7#
      • 1...h6
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
    • B(c);N_GUARD::QAR1(A),XP(b)
    • P(b);::QAB1(A),XP(b)
  • Tries
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • B(c);XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAB(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::R(C),XB(c)
        • K(a);P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
        • B(c);N_GUARD::QAR1(A),XP(b)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
      • B(c);N_GUARD::QAR1(A),XP(b)
      • P(b);::QAB1(A),XP(b)
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