MESON Chess Problem Database

Problem Display
PID: 45962 (8/6K1/3B4/3n4/2B1k3/8/5Q2/7b w - - 0 1)

Zimmer, Eligiusz

Problem Observer, 2002

8/6K1/3B4/3n4/2B1k3/8/5Q2/7b

#2

4 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qf4#
    • 1...Se3
      • 2.Qf4#
    • 1...Sb4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sb6
      • 2.Qf4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sc7
      • 2.Qf4#
    • 1...Se7
      • 2.Qf4#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sb4
        • 2.Qf4#
      • 1...Ke3!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke3!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kf5
        • 2.Qg6#
      • 1...Bf3
        • 2.Qe5#
      • 1...Se3
        • 2.Qf4#
      • 1...Sb4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#

Anticipated by 23134(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::QAR1(A)
    • S(c);N_GUARD::QAR1(A),XS(c)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAB1(A)
      • B(a);SBLOCK::QAR1(A)
      • S(c);N_GUARD::QAR1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
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