MESON Chess Problem Database

Problem Display
PID: 232202 (8/Q7/1pKp2R1/4pp2/5k2/3pb3/8/3BR3 w - - 0 1)

Bruchner, Siegfried

Freie Presse, 1989

8/Q7/1pKp2R1/4pp2/5k2/3pb3/8/3BR3

#2

5 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qa4#
    • 1...b5
      • 2.Qxe3#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qh4#
      • 1...Bf2
        • 2.Qg5#
      • 1...e4
        • 2.Qxd6#
      • 1...Ke4!
    • 1.Qf7?
      • threat
        • 2.Rg4#
      • 1...Ke4
        • 2.Qc4#
      • 1...e4!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh4#
      • 1...Ke4
        • 2.Rg4#
      • 1...Bf2
        • 2.Qh6#
      • 1...e4
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT,P_SPINB(b)::QAR(E)
    • P(f);OGATE::QAB1(E),XB(b)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • B(b);::QAB1(E)
        • P(d);OGATEB,SBLOCK::QAB(E),XP(g)
      • Refutation
        • K(c);P-FLIGHT,P_SPINB(b),P_SPINP(d)
    • Try
      • Q(E);P_PINP(e)
      • Threat
        • R1(D)
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINB(b)::QAR2(E)
      • Refutation
        • P(d);
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::R(D)
      • B(b);::QAB(E)
      • P(d);SBLOCK::QAB(E)
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