MESON Chess Problem Database

Problem Display
PID: 244763 (8/8/4p3/1K1kr3/2N1p3/3n1P2/8/Q6B w - - 0 1)

Dombrovskis, Alfreds A

64 Shakhmatnoe obozrenie, 1972

8/8/4p3/1K1kr3/2N1p3/3n1P2/8/Q6B

#2

5 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.fxe4#
    • 1...Rg5
      • 2.fxe4#
    • 1...Rh5
      • 2.fxe4#
    • 1...Sc1
      • 2.Qxe5#
    • 1...Se1
      • 2.Qxe5#
    • 1...Sf2
      • 2.Qxe5#
    • 1...Sb4
      • 2.Qxe5#
    • 1...Sf4
      • 2.Qxe5#
    • 1...Sc5
      • 2.Qxe5#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qd7#
      • 1...Sc5
        • 2.Qxc5#
      • 1...exf3!
  • Keys
    • 1.Qc3!
      • 1...exf3
        • 2.Qxd3#
      • 1...Rf5
        • 2.fxe4#
      • 1...Rg5
        • 2.fxe4#
      • 1...Rh5
        • 2.fxe4#
      • 1...Sc1
        • 2.Qxe5#
      • 1...Se1
        • 2.Qxe5#
      • 1...Sb2
        • 2.Qxe5#
      • 1...Sf2
        • 2.Qxe5#
      • 1...Sb4
        • 2.Qxe5#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sc5
        • 2.Qxe5#
      • 1...e3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD::P(C),XP(b)
    • S(a);N_GUARD::QAR1(A),XR(d)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • P(b);P_SPINP(b),XP(C)
  • Actual
    • Q(A);
    • Vars
      • P(b);N_GUARD,P_SPINP(b),XP(C)::QAR2(A),XS(a)
      • R(d);N_GUARD::P(C),XP(b)
      • S(a);N_GUARD::QAR1(A),XR(d)
      • P(b);N_GUARD::QAR2(A),XS(a)
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