MESON Chess Problem Database

Problem Display
PID: 168961 (r3k3/3pp1p1/4pQK1/8/B1P5/8/8/1R6 w - - 0 1)

Vasilenko, Anatoly Grigorovich

Sp. HM., SuperProblem, 2015

r3k3/3pp1p1/4pQK1/8/B1P5/8/8/1R6

#2

5 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa4
      • 2.Rb8#
    • 1...Ra5
      • 2.Rb8#
    • 1...Ra6
      • 2.Rb8#
    • 1...Ra7
      • 2.Rb8#
    • 1...Rb8
      • 2.Rxb8#
    • 1...Rd8
      • 2.Qf7#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Kd8!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qg8#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Kf8
        • 2.Qf7#
      • 1...Ra6
        • 2.Rb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD,N_SPINP(b),XB(B)::R(A)
    • R(e);N_GUARD::R(A)
    • R(e);N_GUARD::R(A),XR(e)
    • R(e);SBLOCK::QAB1(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR(D)
      • Vars
        • K(f);N_SPINP(b),P-FLIGHT::QAR2(D)
      • Refutation
        • K(f);N_SPINP(b),P-FLIGHT,P_SPINP(c)
  • Actual
    • Q(D);XP(a)
    • Threat
      • QAR2(D)
    • Vars
      • K(f);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
      • K(f);N_SPINP(b),P-FLIGHT::QAR1(D)
      • R(e);N_GUARD,P_PINQ(D)::R(A)
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