MESON Chess Problem Database

Problem Display
PID: 215330 (3n1k1r/7b/5K2/4P2Q/8/8/8/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

3n1k1r/7b/5K2/4P2Q/8/8/8/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kg8
      • 2.Qe8#
    • 1...Bb1
      • 2.Qxh8#
    • 1...Bc2
      • 2.Qxh8#
    • 1...Bd3
      • 2.Qxh8#
    • 1...Be4
      • 2.Qxh8#
    • 1...Bf5
      • 2.Qxh8#
    • 1...Bg6
      • 2.Qxh8#
    • 1...Sc6
      • 2.Qf7#
    • 1...Se6
      • 2.Qf7#
    • 1...Sb7
      • 2.Qf7#
    • 1...Sf7
      • 2.Qxf7#
  • Tries
    • 1.Qh6+?
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke8!
    • 1.Qxh7?
      • threat
        • 2.Qxh8#
      • 1...Ke8
        • 2.Qe7#
      • 1...Rg8
        • 2.Qe7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Rxh7!
  • Keys
    • 1.e6!
      • 1...Kg8
        • 2.Qe8#
      • 1...Sxe6
        • 2.Qf7#
      • 1...Bg6
        • 2.Qxh8#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Rg8
        • 2.e7#
      • 1...Bb1
        • 2.Qxh8#
      • 1...Bc2
        • 2.Qxh8#
      • 1...Bd3
        • 2.Qxh8#
      • 1...Be4
        • 2.Qxh8#
      • 1...Bf5
        • 2.Qxh8#
      • 1...Bg8
        • 2.e7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Sb7
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(B)
    • B(a);OGATE::QAR2(B),XR(d)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);XB(a)
      • Threat
        • QAR2(B),XR(d)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • R(d);SBLOCK::QAB1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • R(d);XQ(B)
  • Actual
    • P(A);
    • Vars
      • K(c);P-FLIGHT::QAR2(B)
      • S(b);N_GUARD,XP(A)::QAR1(B)
      • B(a);OGATE::QAR2(B),XR(d)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • R(d);SBLOCK::P(A)
      • B(a);SBLOCK::P(A)
      • S(b);N_GUARD::QAR1(B)
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