MESON Chess Problem Database

Problem Display
PID: 119944 (8/7R/7N/6nk/7b/K2B4/8/2Q5 w - - 0 1)

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

Suddeutsche Schachblatter, 1908

8/7R/7N/6nk/7b/K2B4/8/2Q5

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf7+?
      • 1...Sxh7
        • 2.Qd1#
      • 1...Kg4!
    • 1.Qg1?
      • threat
        • 2.Qg4#
      • 1...Sxh7
        • 2.Qg6#
      • 1...Bg3!
  • Keys
    • 1.Rg7!
      • 1...Kxh6
        • 2.Rh7#
      • 1...Be1
        • 2.Qxg5#
      • 1...Bf2
        • 2.Qxg5#
      • 1...Bg3
        • 2.Qxg5#
      • 1...Sf3
        • 2.Bg6#
      • 1...Sh3
        • 2.Be2#
        • 2.Bg6#
      • 1...Se4
        • 2.Be2#
      • 1...Se6
        • 2.Be2#
        • 2.Bg6#
      • 1...Sf7
        • 2.Be2#
        • 2.Bg6#
      • 1...Sh7
        • 2.Be2#
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(b);XR(E)::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(b);OGATE,XR(E)::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • R(E);
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINS(b),XS(D)::R1(E)
      • B(a);N_GUARD::QAR1(A),XS(b)
      • S(b);::B(C)
      • S(b);N_GUARD::B(C)
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