MESON Chess Problem Database

Problem Display
PID: 157840 (4K3/5Np1/pR4N1/3BPk1b/r7/b5PP/8/8 w - - 0 1)

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

St. Petersburg Herald, 1907

4K3/5Np1/pR4N1/3BPk1b/r7/b5PP/8/8

#2

8 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Se7#
    • 1...Rh4
      • 2.Sxh4#
    • 1...Ra5
      • 2.Sh4#
    • 1...Bc1
      • 2.Se7#
    • 1...Bb2
      • 2.Se7#
    • 1...Bb4
      • 2.Sh4#
    • 1...Be7
      • 2.Sxe7#
    • 1...Bg4
      • 2.Sh4#
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sh4#
        • 2.Se7#
      • 1...Kxg6
        • 2.Be4#
      • 1...Rxb4
        • 2.Se7#
      • 1...Bxb4
        • 2.Sh4#
      • 1...Bxg6
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(b);S_CUTB(a)::S(F)
    • R(b);N_GUARD::S(F),XR(b)
    • R(b);N_GUARD::S(F)
    • B(a);N_GUARD::S(F)
    • B(a);S_CUTR(b)::S(F)
    • B(a);N_GUARD::S(F),XB(a)
    • B(d);S_CUTR(b)::S(F)
  • Actual
    • R(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT,XS(F)::B(C)
      • R(b);XR(E)::S(F)
      • B(a);XR(E)::S(F)
      • B(d);N_GUARD,P_PINS(G),SBLOCK,XS(F)::P(A)
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