MESON Chess Problem Database

Problem Display
PID: 233726 (2R5/7K/3PQ2B/5N2/N7/8/1p1Pp3/n1bkn2R w - - 0 1)

Berg, Wolfgang

Degenkolbe, Mirko

Freie Presse, 1994

2R5/7K/3PQ2B/5N2/N7/8/1p1Pp3/n1bkn2R

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Sxb2#
    • 1...Sc2
      • 2.Sc3#
    • 1...Sb3
      • 2.Qxb3#
  • Tries
    • 1.Qb3+?
      • 1...Sc2
        • 2.Sc3#
        • 2.Qxc2#
      • 1...Sxb3!
    • 1.Qe4?
      • threat
        • 2.Sc3#
      • 1...Bxd2
        • 2.Sxb2#
      • 1...b1S!
  • Keys
    • 1.Qa2!
      • 1...Bxd2
        • 2.Sxb2#
      • 1...b1Q
        • 2.Sc3#
      • 1...b1S
        • 2.Se3#
      • 1...b1B
        • 2.Sc3#
      • 1...b1R
        • 2.Sc3#
        • 2.Se3#
      • 1...Sc2
        • 2.Sc3#
      • 1...Sb3
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD,XP(B)::S(C),XP(e)
    • S(a);SBLOCK::S(C)
    • S(a);N_GUARD::QAB(F),XS(a)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • S(a);XQ(F)
    • Try
      • Q(F);
      • Threat
        • S(C)
      • Vars
        • B(b);N_GUARD,XP(B)::S(C),XP(e)
      • Refutation
        • P(e);
  • Actual
    • Q(F);
    • Vars
      • B(b);N_GUARD,XP(B)::S(C),XP(e)
      • P(e);P_PINS(D)::S(C)
      • P(e);::S(D)
      • S(a);SBLOCK::S(C)
      • S(a);N_GUARD::QAB(F),XS(a)
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