MESON Chess Problem Database

Problem Display
PID: 15428 (K3Q3/p7/3k4/qp1Pp3/3P4/8/5B1b/1n2RB2 w - - 0 1)

Lobusov, Andrey Jakovlevic

Themes-64, 1983

K3Q3/p7/3k4/qp1Pp3/3P4/8/5B1b/1n2RB2

#2

7 + 7

3748 FIDE Album (1983-1985) 1992
133 The Problemist Supplement 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qd7#
    • 1...Qxe1
      • 2.Qd8#
    • 1...Qd2
      • 2.Qd8#
    • 1...Qc3
      • 2.Qd8#
    • 1...Qb4
      • 2.Qd8#
    • 1...Qc7
      • 2.Qe6#
    • 1...Qd8+
      • 2.Qxd8#
    • 1...Qa1
      • 2.Qd8#
    • 1...Qa2
      • 2.Qd8#
    • 1...Qa3
      • 2.Qd8#
    • 1...Qa4
      • 2.Qd8#
    • 1...Qa6
      • 2.Qd8#
    • 1...exd4
      • 2.Qc6#
  • Tries
    • 1.Bxb5?
      • threat
        • 2.Qd7#
      • 1...Qd8+
        • 2.Qxd8#
      • 1...Kxd5
        • 2.Qc6#
        • 2.Qd7#
      • 1...Kc7
        • 2.Qb8#
      • 1...exd4
        • 2.Qc6#
      • 1...Qc7
        • 2.Qe6#
      • 1...Qxb5!
    • 1.Bh4?
      • threat
        • 2.Qc6#
      • 1...Qd8+
        • 2.Qxd8#
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kc7
        • 2.Qc6#
        • 2.Qd8#
      • 1...Qc3
        • 2.Qd8#
      • 1...Qc7
        • 2.Qe6#
      • 1...Qa6
        • 2.Qd8#
      • 1...Qb6!
    • 1.Rc1?
      • threat
        • 2.Qe6#
      • 1...Qd8+
        • 2.Qxd8#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Qc3
        • 2.Qd8#
      • 1...Sc3!
    • 1.Qe7+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kxe7!
    • 1.dxe5+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kc7
        • 2.d6#
      • 1...Bxe5!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Qd7#
      • 1...Qd8+
        • 2.Qxd8#
      • 1...Kxd5
        • 2.Qe6#
      • 1...Kc7
        • 2.Qb8#
      • 1...exd4
        • 2.Qc6#
      • 1...Qc7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • K(f);P-FLIGHT,XP(E)::QAR2(G)
    • Q(c);N_GUARD,XR(A)::QAR2(G)
    • Q(c);N_GUARD::QAR2(G)
    • Q(c);SBLOCK::QAR1(G)
    • Q(c);CHECK,N_GUARD::QAR2(G),XQ(c)
    • P(e);XP(D)::QAR1(G)
  • Tries
    • Try
      • B(B);XP(d)
      • Threat
        • QAR1(G)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR2(G),XQ(c)
        • K(f);S_FLIGHT::QAB1(G)
        • P(e);XP(D)::QAR1(G)
        • Q(c);SBLOCK::QAR1(G)
      • Refutation
        • Q(c);XB(B)
    • Try
      • B(C);
      • Threat
        • QAR1(G)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR2(G),XQ(c)
        • K(f);P-FLIGHT,XP(E)::QAR2(G)
        • Q(c);N_GUARD::QAR2(G)
        • Q(c);SBLOCK::QAR1(G)
      • Refutation
        • Q(c);
    • Try
      • R(A);
      • Threat
        • QAR1(G)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR2(G),XQ(c)
        • K(f);P-FLIGHT,XP(E)::QAB1(G)
        • Q(c);N_GUARD::QAR2(G)
      • Refutation
        • S(a);
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(E)::QAR2(G)
      • Refutation
        • K(f);P_SPINP(e),S_FLIGHT,XQ(G)
    • Try
      • P(D);CHECK,XP(e)
      • Vars
        • K(f);P-FLIGHT,XP(E)::QAR2(G)
        • K(f);OGATE,S_FLIGHT::P(E)
      • Refutation
        • B(b);XP(D)
  • Actual
    • B(B);
    • Threat
      • QAR1(G)
    • Vars
      • Q(c);CHECK,N_GUARD::QAR2(G),XQ(c)
      • K(f);P-FLIGHT,XP(E)::QAB1(G)
      • K(f);S_FLIGHT::QAB1(G)
      • P(e);XP(D)::QAR1(G)
      • Q(c);SBLOCK::QAR1(G)
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