MESON Chess Problem Database

Problem Display
PID: 214883 (B5r1/1Np1b3/5n2/1P1kpPN1/8/1K1pP3/8/6Q1 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1981

B5r1/1Np1b3/5n2/1P1kpPN1/8/1K1pP3/8/6Q1

#2

8 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.e4#
    • 1...Sh5
      • 2.e4#
    • 1...Sd7
      • 2.e4#
    • 1...Sh7
      • 2.e4#
    • 1...Se8
      • 2.e4#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qc4#
        • 2.Qc6#
      • 1...Bc5
        • 2.Qc4#
        • 2.Qxc5#
      • 1...c5
        • 2.Qc4#
      • 1...c6
        • 2.Qc4#
        • 2.Qxc6#
      • 1...e4!
    • 1.Qh1+?
      • 1...Se4
        • 2.Qxe4#
      • 1...e4!
    • 1.Qg2+?
      • 1...Se4
        • 2.Qxe4#
      • 1...e4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Sd6#
      • 1...Sxe4
        • 2.Qxg8#
      • 1...Bb4
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(d);N_GUARD::P(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB1(A),XS(d)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(A);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB1(A),XS(d)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(b);S_FLIGHT,XS(F)::B(H)+S(G),DCHECK
      • S(d);N_GUARD,SBLOCK,XS(F)::QAB(A),XR(g)
      • B(f);N_GUARD::S(F),XS(d)
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