MESON Chess Problem Database

Problem Display
PID: 189552 (1R2Qb2/rqN4K/P7/8/1k1B4/pN1P4/P4n2/1n6 w - - 0 1)

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

1st HM., Frankisches Volksblatt, 1911

1R2Qb2/rqN4K/P7/8/1k1B4/pN1P4/P4n2/1n6

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qxb5#
    • 1...Qb6
      • 2.Rxb6#
    • 1...Ra8
      • 2.Rxb7#
    • 1...Be7
      • 2.Sd5#
    • 1...Bg7
      • 2.Sd5#
  • Keys
    • 1.Bg7!
      • threat
        • 2.Sd5#
      • 1...Sxd3
        • 2.Qe4#
      • 1...Qb5
        • 2.Qxb5#
      • 1...Sc3
        • 2.Bxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD::QAR1(I),XQ(f)
    • Q(f);OGATE::R(H),XQ(f)
    • R(e);N_GUARD::R(H),XQ(f)
    • B(g);N_PINS(F)::S(F)
  • Actual
    • B(D);N_SPINS(F)
    • Threat
      • S(F)
    • Vars
      • S(b);N_GUARD,XP(C)::QAR(I)
      • Q(f);N_GUARD::QAR1(I),XQ(f)
      • S(a);SBLOCK::B(D),XB(g)
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Developed and maintained by Brian Stephenson.
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