MESON Chess Problem Database

Problem Display
PID: 216179 (k7/p6r/K3N2b/8/1Q6/8/8/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

k7/p6r/K3N2b/8/1Q6/8/8/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Qxb7#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Rg7
      • 2.Qf8#
    • 1...Rh8
      • 2.Sc7#
      • 2.Qb7#
    • 1...Bc1
      • 2.Qf8#
    • 1...Bd2
      • 2.Qf8#
    • 1...Be3
      • 2.Qf8#
    • 1...Bg7
      • 2.Sc7#
      • 2.Qb7#
    • 1...Bf8
      • 2.Qxf8#
  • Tries
    • 1.Qe4+?
      • 1...Rb7
        • 2.Qxb7#
      • 1...Kb8!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Qf8#
        • 2.Qb7#
      • 1...Rxg7
        • 2.Qf8#
      • 1...Bxg7
        • 2.Qb7#
      • 1...Rh8
        • 2.Qb7#
      • 1...Bf4
        • 2.Qb7#
      • 1...Bg5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD::QAB1(A),XR(c)
    • R(c);N_GUARD::S(C),XR(c)
    • R(c);S_CUTB(a)::QAR(A)
    • B(a);N_GUARD::QAR(A)
    • B(a);N_GUARD::QAR(A),XB(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(A),XR(c)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);XS(C)::QAR(A)
      • B(a);XS(C)::QAB1(A)
      • R(c);SBLOCK::QAB1(A)
      • B(a);::QAB1(A)
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