MESON Chess Problem Database

Problem Display
PID: 187890 (3b4/1Q5K/pPnN4/k1rN4/P7/1P6/8/8 w - - 0 1)

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

Narodni listy, 1910

3b4/1Q5K/pPnN4/k1rN4/P7/1P6/8/8

#2

7 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rb5
      • 2.Sc4#
    • 1...Bxb6
      • 2.Qxb6#
  • Tries
    • 1.Qxc6?
      • threat
        • 2.Sb7#
        • 2.Qxc5#
        • 2.b4#
      • 1...Rxc6
        • 2.Sb7#
      • 1...Bxb6
        • 2.Sb7#
        • 2.Qxb6#
        • 2.b4#
      • 1...Rc1
        • 2.Sb7#
        • 2.b4#
      • 1...Rc2
        • 2.Sb7#
        • 2.b4#
      • 1...Rc3
        • 2.Sb7#
        • 2.Qxc3#
        • 2.b4#
      • 1...Rc4
        • 2.Sxc4#
        • 2.Sb7#
      • 1...Rb5
        • 2.Sc4#
        • 2.Sb7#
      • 1...Rxd5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sb7#
      • 1...Rxd5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::S(E),XR(b)
    • R(b);N_GUARD::S(E)
    • B(e);OGATE,XP(D)::QAB1(F),XB(e)
  • Tries
    • Try
      • Q(F);XS(d)
      • Threat
        • DUALS(3)
      • Vars
        • R(b);XQ(F)::S(E)
      • Refutation
        • R(b);XS(C)
  • Actual
    • Q(F);
    • Threat
      • S(E)
    • Vars
      • R(b);N_GUARD,XS(C)::S(E)
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