MESON Chess Problem Database

Problem Display
PID: 157839 (B7/6RK/7R/2b1Nk2/8/1n1N4/8/8 w - - 0 1)

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

Schweizerische Schachzeitung, 1907

B7/6RK/7R/2b1Nk2/8/1n1N4/8/8

#2

6 + 3

15148 Sadier Collection 2016
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sh4#
        • 2.Rg5#
      • 1...Bf2
        • 2.Rg5#
      • 1...Be3
        • 2.Sh4#
      • 1...Be7!
    • 1.Sg4?
      • threat
        • 2.Rf6#
      • 1...Be7
        • 2.Se3#
      • 1...Bd4!
    • 1.Sf7?
      • threat
        • 2.Rg5#
      • 1...Be3
        • 2.Sd6#
      • 1...Be7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sh4#
      • 1...Kg4
        • 2.Se7#
      • 1...Kg5
        • 2.Sh4#
        • 2.Se7#
      • 1...Ke6
        • 2.Sh4#
      • 1...Kf6
        • 2.Sh4#
        • 2.Se7#
      • 1...Bf2
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#

This anticipates 184363(1928), 96813(1945)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::R1(D)
        • B(b);::S(B)
      • Refutation
        • B(b);
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • B(b);N_GUARD::S(B)
      • Refutation
        • B(b);
    • Try
      • S(B);
      • Threat
        • R1(D)
      • Vars
        • B(b);N_GUARD::S(B)
      • Refutation
        • B(b);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT::R(D)+S(B)
      • K(c);S_FLIGHT::R(C)+S(B)
      • B(b);N_GUARD::S(B)
      • B(b);N_GUARD::S(B),XB(b)
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