MESON Chess Problem Database

Problem Display
PID: 162823 (8/3p4/3pP3/1KPkp1N1/3p4/8/3n3Q/8 w - - 0 1)

Caplin, Aleksandr Borisovich

Sachova skladba, 2012

8/3p4/3pP3/1KPkp1N1/3p4/8/3n3Q/8

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qa2#
    • 1...Sf1
      • 2.Qa2#
    • 1...Sf3
      • 2.Qa2#
    • 1...Se4
      • 2.Qa2#
    • 1...e4
      • 2.Qxd6#
  • Tries
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qa2#
      • 1...Se4
        • 2.Qxe4#
        • 2.Qa2#
      • 1...e4!
  • Keys
    • 1.Qh7!
      • 1...dxc5
        • 2.Qxd7#
      • 1...dxe6
        • 2.Qb7#
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qf5#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sb1
        • 2.Qe4#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sb3
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A)
    • P(d);OGATE::QAR1(A),XP(e)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);OGATE,P_SPINS(a)::QAB(A)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(A);
    • Vars
      • P(e);OGATEB,XP(C)::QAR2(A),XP(f)
      • P(f);OGATE,XP(E)::QAB(A)
      • P(b);OGATEB::QAR2(A),XP(b)
      • P(d);OGATEB::QAR2(A)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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