MESON Chess Problem Database

Problem Display
PID: 248177 (2R4Q/1p1N1K2/3p4/1p1k1p2/r7/3P4/5b2/8 w - - 0 1)

Blikeng, Bjarne

Sjakk-Liv, 1947

2R4Q/1p1N1K2/3p4/1p1k1p2/r7/3P4/5b2/8

#2

5 + 7

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sb6#
    • 1...Be1
      • 2.Sb6#
    • 1...Bg3
      • 2.Sb6#
    • 1...Bd4
      • 2.Qh1#
    • 1...Bh4
      • 2.Sb6#
    • 1...Bb6
      • 2.Sxb6#
  • Keys
    • 1.Qb2!
      • threat
        • 2.Sf6#
      • 1...Rd4
        • 2.Qxb5#
      • 1...Bd4
        • 2.Qg2#
      • 1...Bh4
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(a)::S(B)
    • B(a);N_GUARD::S(B)
    • B(a);SBLOCK,S_CUTR(b)::QAB(E)
    • B(a);N_GUARD::S(B),XB(a)
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • R(b);SBLOCK,S_CUTB(a)::QAR2(E),XP(c)
      • B(a);OGATE,SBLOCK::QAB(E)
      • B(a);N_GUARD::S(B)
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