MESON Chess Problem Database

Problem Display
PID: 250997 (3R4/5pr1/4BN2/4k1nN/7n/7Q/K7/7b w - - 0 1)

Wrobel, Marian

Jerusalem Post, 1951

(First published on Fri May 25 1951)

3R4/5pr1/4BN2/4k1nN/7n/7Q/K7/7b

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5+
      • 2.Rxd5#
    • 1...Sg2
      • 2.Rd5#
      • 2.Qf5#
    • 1...Shf3
      • 2.Rd5#
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qf5#
    • 1...Sgf3
      • 2.Rd5#
    • 1...Se4
      • 2.Rd5#
  • Tries
    • 1.Sg4+?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qe3#
      • 1...Kxe6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd6#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...Kxe6
        • 2.Re8#
      • 1...Sxe6
        • 2.Sd7#
      • 1...fxe6
        • 2.Sg4#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Se4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);CHECK,N_GUARD::R1(F),XB(a)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • S(b);N_GUARD::QAR1(B)
    • S(d);S_CUTB(a)::R1(F)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(c);P-FLIGHT,XB(D)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(a);CHECK,N_GUARD::QAR1(B),XB(a)
      • K(c);OGATEB,P-FLIGHT,XB(D)::R(F)
      • S(d);SBLOCK,XB(D)::S(E)
      • P(e);SBLOCK,XB(D)::S(E)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • S(d);S_CUTB(a)::QAR1(B)
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