MESON Chess Problem Database

Problem Display
PID: 6981 (q3B1bb/3Q1pk1/3B2P1/3p3K/8/8/8/8 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Enigmistica Popolare, 1935

q3B1bb/3Q1pk1/3B2P1/3p3K/8/8/8/8

#2

5 + 6

3310 2345 Chess Problems 1997
3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Qxf7#
  • Keys
    • 1.gxf7!
      • threat
        • 2.f8Q#
      • 1...Bxf7+
        • 2.Qxf7#
      • 1...Kf6
        • 2.fxg8S#
      • 1...Kh7
        • 2.f8S#
      • 1...Qxe8
        • 2.fxe8S#
      • 1...Bh7
        • 2.f8Q#
        • 2.f8R#

This anticipates 70690(1948)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD::QAR1(D),XP(b)
  • Actual
    • P(C);XP(b)
    • Threat
      • P=Q
    • Vars
      • B(e);CHECK,OGATE,P_SPINB(e),XP(C)::QAR1(D),XB(e)
      • K(c);S_FLIGHT::PXB(e)=S
      • K(c);P-FLIGHT::P=S
      • Q(d);OGATE,P_PINP(C),XB(E)::PXQ(d)=S
      • B(e);SBLOCK::P=Q
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