MESON Chess Problem Database

Problem Display
PID: 21119 (5Q2/5P2/K2R4/R1N1kP2/p5pq/2pPp1b1/4P3/8 w - - 0 1)

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

1st Prize, Tidskrift for Schack, 1916

5Q2/5P2/K2R4/R1N1kP2/p5pq/2pPp1b1/4P3/8

#2

9 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Se6#
    • 1...Qf6
      • 2.Se6#
    • 1...Bf4
      • 2.Sb3#
      • 2.Sxa4#
      • 2.Se4#
      • 2.Sb7#
      • 2.Sd7#
  • Tries
    • 1.Rd5+?
      • 1...Kf4
        • 2.Se6#
      • 1...Kf6
        • 2.Se4#
      • 1...Kxd5!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Qd6#
      • 1...Qxf6+
        • 2.Se6#
      • 1...Kd4
        • 2.Se6#
      • 1...Kf4
        • 2.Se6#
      • 1...Kd5
        • 2.Sb3#
      • 1...Kxf6
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);S_FLIGHT::S(D)
    • Q(f);P_PINR(G),SBLOCK::R(C)+S(D)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(g);S_FLIGHT::S(D)
      • Refutation
        • K(g);P-FLIGHT,XR(G)
  • Actual
    • R(G);
    • Threat
      • QAB1(I)
    • Vars
      • Q(f);CHECK,SBLOCK,XR(G)::R(C)+S(D)
      • K(g);S_FLIGHT::S(D)
      • K(g);P-FLIGHT::R(C)+S(D)
      • K(g);S_FLIGHT,XR(G)::S(D)
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