MESON Chess Problem Database

Problem Display
PID: 245854 (4k2n/2K4N/6n1/3P4/8/8/Q7/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Europa-Rochade, 2009

4k2n/2K4N/6n1/3P4/8/8/Q7/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4+?
      • 1...Ke7
        • 2.Qd7#
      • 1...Kf7!
  • Keys
    • 1.d6!
      • 1...Sf4
        • 2.Qg8#
      • 1...Sh4
        • 2.Qe6#
        • 2.Qg8#
      • 1...Se5
        • 2.Qe6#
        • 2.Qg8#
      • 1...Se7
        • 2.d7#
      • 1...Sf8
        • 2.Sf6#
      • 1...Sf7
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • S(a);N_GUARD::QAR2(A)
      • S(a);SBLOCK::P(B)
      • S(a);SBLOCK::S(D)
      • S(c);SBLOCK::QAB(A)
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