MESON Chess Problem Database

Problem Display
PID: 246105 (1R3K2/8/8/5QBk/7P/8/6q1/8 w - - 0 1)

Zinoviev, Nikolai

Smena (Moscow), 1994

1R3K2/8/8/5QBk/7P/8/6q1/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Qh7#
      • 2.Qf7#
    • 1...Qxg5
      • 2.Qxg5#
  • Tries
    • 1.Bc1+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kxh4!
    • 1.Bd2+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kxh4!
    • 1.Be3+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kxh4!
    • 1.Bf4+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kxh4!
    • 1.Bf6+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kh6!
    • 1.Be7+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kh6!
    • 1.Bd8+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Kh6!
    • 1.Rb6?
      • threat
        • 2.Rh6#
      • 1...Qa8+
        • 2.Bd8#
      • 1...Qxg5
        • 2.Qxg5#
      • 1...Qc6!
    • 1.Qf3+?
      • 1...Kg6
        • 2.Qf7#
      • 1...Qg4
        • 2.Qf7#
      • 1...Qxf3+!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Rh8#
      • 1...Qb7+
        • 2.Be7#
      • 1...Qb2+
        • 2.Bf6#
      • 1...Qxg5+
        • 2.Qxg5#
      • 1...Qc6
        • 2.Bf6#
        • 2.Be7#
        • 2.Bd8#
      • 1...Qa8
        • 2.Bf6#
        • 2.Be7#
        • 2.Bd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);OGATE,P_SPINQ(a),XB(C)::QAR1(B),XQ(a)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Threat
        • R1(D)
      • Vars
        • Q(a);CHECK,N_GUARD::QAR(B)+B(C)
        • Q(a);OGATE,P_SPINQ(a),XB(C)::QAR1(B),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • Q(a);P_SPINQ(a),SBLOCK::QAB(B)
      • Refutation
        • Q(a);CHECK,XQ(B)
  • Actual
    • K(E);P_SPINB(C),S_FLIGHT
    • Threat
      • R(D)
    • Vars
      • Q(a);CHECK,N_PINB(C)::QAR(B)+B(C)
      • Q(a);CHECK,P_SPINQ(a),XB(C)::QAR1(B),XQ(a)
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