MESON Chess Problem Database

Problem Display
PID: 92120 (8/8/5B2/Q7/4p3/3pp3/3PpNB1/2N1k2K w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1982

8/8/5B2/Q7/4p3/3pp3/3PpNB1/2N1k2K

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf2
      • 2.Bh4#
  • Tries
    • 1.Sb3?
      • 1...Kxf2
        • 2.Bh4#
      • 1...exf2
        • 2.Qa1#
      • 1...exd2!
    • 1.Sxe4?
      • 1...exd2
        • 2.Qxd2#
      • 1...Kd1!
  • Keys
    • 1.Qa1!
      • 1...Kxd2
        • 2.Qc3#
      • 1...Kxf2
        • 2.Bh4#
      • 1...exd2
        • 2.Scxd3#
      • 1...exf2
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XS(D)::B(G)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(D)::B(G)
        • P(d);SBLOCK,XS(D)::QAR(F)
      • Refutation
        • P(d);P_SPINP(d),XP(C)
    • Try
      • S(D);XP(e)
      • Vars
        • P(d);OGATE,P_SPINP(d),XP(C)::QAB1(F),XP(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(C)::QAB1(F)
      • K(a);OGATEB,S_FLIGHT,XS(D)::B(G)
      • P(d);SBLOCK,XP(C)::QAR(F)+S(A),DCHECK,XP(c)
      • P(d);SBLOCK,XS(D)::QAR(F)+S(A)
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