MESON Chess Problem Database

Problem Display
PID: 99678 (5n2/1Qp5/3pp3/2N1kp1N/3p4/5K2/8/2n4B w - - 0 1)

Szekeres, Sandor

Magyar Sakkszovetseg, 1969

5n2/1Qp5/3pp3/2N1kp1N/3p4/5K2/8/2n4B

#2

5 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sd3#
    • 1...Se2
      • 2.Sd3#
    • 1...Sb3
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sg6
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
    • 1...Sh7
      • 2.Sd7#
    • 1...f4
      • 2.Qe4#
    • 1...d5
      • 2.Qxc7#
  • Tries
    • 1.Qc6?
      • 1...dxc5
        • 2.Qxc5#
      • 1...f4
        • 2.Qe4#
      • 1...Sa2
        • 2.Sd3#
      • 1...Se2
        • 2.Sd3#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sg6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sh7
        • 2.Sd7#
      • 1...d5
        • 2.Qxc7#
      • 1...d3!
  • Keys
    • 1.Kf2!
      • 1...Sd3+
        • 2.Sxd3#
      • 1...dxc5
        • 2.Qxc7#
      • 1...d3
        • 2.Qb2#
      • 1...f4
        • 2.Qe4#
      • 1...d5
        • 2.Qxc7#
      • 1...Sa2
        • 2.Sd3#
      • 1...Se2
        • 2.Sd3#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sg6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sh7
        • 2.Sd7#
      • 1...c6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • S(h);N_GUARD::S(C)
    • S(h);N_GUARD::S(C),XS(h)
    • P(d);N_GUARD::QAR1(E)
    • P(e);OGATEB,SBLOCK::QAB(E),XP(g)
  • Tries
    • Try
      • Q(E);
      • Vars
        • P(e);OGATE,XS(C)::QAR2(E),XP(e)
        • P(d);N_GUARD::QAR1(E)
        • S(a);N_GUARD::S(C)
        • S(a);N_GUARD::S(C),XS(a)
        • S(h);N_GUARD::S(C)
        • S(h);N_GUARD::S(C),XS(h)
        • P(e);OGATEB,SBLOCK::QAB(E),XP(g)
      • Refutation
        • P(b);
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • S(a);CHECK,N_GUARD::S(C),XS(a)
      • P(e);OGATEB,XS(C)::QAB(E),XP(g)
      • P(b);OGATEB::QAB(E)
      • P(d);N_GUARD::QAR1(E)
      • P(e);OGATEB::QAB(E),XP(g)
      • S(a);N_GUARD::S(C)
      • S(h);N_GUARD::S(C)
      • S(h);N_GUARD::S(C),XS(h)
      • P(g);OGATE::QAB(E)
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