MESON Chess Problem Database

Problem Display
PID: 76005 (8/8/2K5/1N6/2kpn3/P4Q2/8/8 w - - 0 1)

Turevski, Dmitri Evgenevich

Mat Plus, 2007

8/8/2K5/1N6/2kpn3/P4Q2/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sd6#
    • 1...Sf2
      • 2.Sd6#
    • 1...Sg3
      • 2.Sd6#
    • 1...Sc5
      • 2.Sd6#
    • 1...Sg5
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...d3
      • 2.Qf7#
  • Tries
    • 1.Qe2+?
      • 1...d3
        • 2.Qa2#
      • 1...Kb3!
    • 1.Qf1+?
      • 1...d3
        • 2.Qf7#
      • 1...Kb3!
  • Keys
    • 1.Qd1!
      • 1...Sd2
        • 2.Qc2#
      • 1...Sf2
        • 2.Qc2#
      • 1...Sc3
        • 2.Sd6#
      • 1...Sg3
        • 2.Qc2#
      • 1...Sc5
        • 2.Qc2#
      • 1...Sg5
        • 2.Qc2#
      • 1...Sd6
        • 2.Qc2#
      • 1...Sf6
        • 2.Qc2#
      • 1...d3
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(C)
    • S(c);N_GUARD::S(C),XS(c)
    • P(b);SBLOCK::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • S(c);N_GUARD::QAR2(B)
      • S(c);N_GUARD,SBLOCK::S(C)
      • P(b);SBLOCK::QAR2(B)
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