MESON Chess Problem Database

Problem Display
PID: 93927 (4k2r/b4r2/np1PB3/8/8/K3p3/6Q1/7R w - - 0 1)

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

Sachove umeni (Ceskoslovensky sach), 1937

4k2r/b4r2/np1PB3/8/8/K3p3/6Q1/7R

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Rxh8#
    • 1...Rb7
      • 2.Rxh8#
    • 1...Rc7
      • 2.Rxh8#
    • 1...Rd7
      • 2.Rxh8#
    • 1...Re7
      • 2.Rxh8#
  • Tries
    • 1.Qc6+?
      • 1...Kd8
        • 2.Qc8#
      • 1...Rd7
        • 2.Rxh8#
      • 1...Kf8!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qc8#
      • 1...Kd8
        • 2.Qc8#
      • 1...Kf8
        • 2.Qxf7#
      • 1...Rxb7
        • 2.Rxh8#
      • 1...Rc7
        • 2.Rxh8#
      • 1...Rd7
        • 2.Rxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(f);P-FLIGHT::R(A),XR(g)
    • R(e);N_GUARD::R(A),XR(g)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR1(B)
        • R(e);P_SPINR(e)::R(A),XR(g)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(f);P-FLIGHT::QAR1(B)
      • K(f);P-FLIGHT::QAR1(B),XR(e)
      • R(e);N_GUARD,XQ(B)::R(A),XR(g)
      • R(e);N_GUARD::R(A),XR(g)
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