MESON Chess Problem Database

Problem Display
PID: 108944 (2q1n3/1n1kPR2/1B6/1Pp2P2/5Q2/3rpN1K/8/8 w - - 0 1)

Mihalek, Frederick M

Northwest Chess, 1977

2q1n3/1n1kPR2/1B6/1Pp2P2/5Q2/3rpN1K/8/8

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.exd8Q#
      • 2.exd8R#
    • 1...Rd6
      • 2.Se5#
    • 1...Sbd6
      • 2.Se5#
    • 1...Sd8
      • 2.exd8Q#
      • 2.exd8S#
      • 2.exd8B#
      • 2.exd8R#
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe6#
      • 1...Kd6
        • 2.Qxd3#
      • 1...Qc6
        • 2.Qxc6#
      • 1...Sf6
        • 2.e8S#
      • 1...Sc7
        • 2.Qc6#
      • 1...Sg7
        • 2.e8S#
      • 1...Rd6
        • 2.Se5#
      • 1...Sd8
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Sed6
        • 2.e8Q#
        • 2.e8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(f);OGATE::PXQ(f)=Q
    • R(a);SBLOCK::S(A)
    • S(d);SBLOCK::S(A)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(e);P-FLIGHT,P_PINP(E)::QAR(C),XR(a)
      • Q(f);N_GUARD::QAB1(C),XQ(f)
      • S(g);OGATE::P=S
      • S(g);S_CUTQ(f)::QAB1(C)
      • R(a);SBLOCK::S(A)
      • S(d);OGATE::PXS(d)=Q
      • S(g);OGATE,SBLOCK::P=Q
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