MESON Chess Problem Database

Problem Display
PID: 73502 (8/7b/5P1k/8/4n1RK/8/6Q1/8 w - - 0 1)

Hernitz, Zvonimir

Freie Presse, 1993

8/7b/5P1k/8/4n1RK/8/6Q1/8

#2

4 + 3

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sc3
      • 2.Qd2#
    • 1...Sg3
      • 2.Qd2#
    • 1...Sc5
      • 2.Qd2#
    • 1...Sd6
      • 2.Qd2#
    • 1...Sxf6
      • 2.Qd2#
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Qg5#
        • 2.Qg7#
      • 1...Bxe4
        • 2.Qg7#
      • 1...Bf5
        • 2.Qg7#
      • 1...Bg8
        • 2.Qg7#
      • 1...Bg6!
    • 1.Rg7?
      • 1...Sxf6
        • 2.Qg5#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Bg8
        • 2.Qg6#
      • 1...Sd2
        • 2.Qxd2#
        • 2.Qg5#
      • 1...Sf2
        • 2.Qg5#
      • 1...Sc3
        • 2.Qd2#
        • 2.Qg5#
      • 1...Sg3
        • 2.Qd2#
      • 1...Sc5
        • 2.Qd2#
        • 2.Qg5#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sd6
        • 2.Qd2#
        • 2.Qg5#
      • 1...Bf5!
    • 1.Qd2+?
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sxd2!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Qg7#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Sg3
        • 2.Qd2#
      • 1...Sg5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::QAB(A),XS(a)
    • S(a);N_GUARD::QAB(A)
    • S(a);N_GUARD,XP(D)::QAB(A)
  • Tries
    • Try
      • R(B);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XR(B)::QAB1(A)
        • B(c);::QAB1(A)
      • Refutation
        • B(c);
    • Try
      • R(B);
      • Vars
        • S(a);N_GUARD,XP(D)::QAB1(A)
        • B(c);N_GUARD::QAR1(A),XB(c)
        • B(c);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • R(B);
    • Threat
      • QAB1(A)
    • Vars
      • B(c);N_GUARD::QAR1(A),XB(c)
      • S(a);N_GUARD::QAB(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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