MESON Chess Problem Database

Problem Display
PID: 58342 (2b5/K7/1n1B4/2NP1P2/3k4/2p1p3/B1PP1n2/5Q2 w - - 0 1)

Hjelle, David

Chess Life, 1959

2b5/K7/1n1B4/2NP1P2/3k4/2p1p3/B1PP1n2/5Q2

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qd3#
      • 2.Qf4#
    • 1...Sh1
      • 2.Qd3#
      • 2.Qf4#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Se4
      • 2.Qd3#
    • 1...Sg4
      • 2.Qd3#
      • 2.Qf4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sxd5
      • 2.Qc4#
    • 1...Sd7
      • 2.Qc4#
    • 1...Sa8
      • 2.Qc4#
    • 1...cxd2
      • 2.Qa1#
    • 1...exd2
      • 2.Qxf2#
    • 1...e2
      • 2.Qxf2#
  • Tries
    • 1.Kxb6?
      • threat
        • 2.Qc4#
      • 1...exd2
        • 2.Qxf2#
      • 1...Sd3
        • 2.Qxd3#
      • 1...e2
        • 2.Qxf2#
      • 1...Ba6!
    • 1.Qe2?
      • threat
        • 2.Qxe3#
        • 2.dxe3#
      • 1...Sxd5
        • 2.Qc4#
      • 1...exd2
        • 2.Qxf2#
        • 2.Qe5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd1
        • 2.Qd3#
        • 2.Qg4#
      • 1...Sg4
        • 2.Qd3#
        • 2.Qxg4#
      • 1...cxd2!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qg7#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...exd2
        • 2.Qxf2#
      • 1...Sd3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qe4#
        • 2.Qxg4#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sd7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::QAR1(A),XS(a)
    • S(a);N_GUARD::QAR1(A)
    • S(e);N_GUARD::QAR1(A)
    • S(e);N_GUARD::QAR1(A),XS(e)
    • S(e);N_GUARD,XP(F)::QAR1(A)
    • P(b);OGATEB,XP(D)::QAB(A)
    • P(c);OGATEB,XP(D)::QAB(A),XS(a)
    • P(c);OGATEB::QAB(A),XS(a)
  • Tries
    • Try
      • K(I);S_FLIGHT,XS(e)
      • Threat
        • QAR1(A)
      • Vars
        • P(c);OGATEB,XP(D)::QAB(A),XS(a)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • P(c);OGATEB::QAB(A),XS(a)
      • Refutation
        • B(f);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_GUARD,XP(F)::QAR1(A)
        • S(e);N_GUARD::QAR1(A),XS(e)
      • Refutation
        • P(b);XP(D)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(e);OGATE,XP(F)::QAR1(A),XS(e)
      • P(c);OGATEB,XP(D)::QAB(A),XS(a)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(e);SBLOCK::S(E)
      • S(e);S_CUTB(f)::S(E)
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