MESON Chess Problem Database

Problem Display
PID: 158815 (7N/6kp/5N2/8/2BK4/4Q3/8/8 w - - 0 1)

Aberman, Victor

Kudesnik, 2013

7N/6kp/5N2/8/2BK4/4Q3/8/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qe5#
  • Tries
    • 1.Sg4?
      • 1...Kxh8
        • 2.Qe5#
      • 1...h5
        • 2.Qh6#
      • 1...h6
        • 2.Qxh6#
      • 1...Kf8!
    • 1.Sh5+?
      • 1...Kxh8
        • 2.Qe5#
        • 2.Qe8#
      • 1...Kf8!
    • 1.Se8+?
      • 1...Kxh8
        • 2.Qe5#
      • 1...Kf8!
    • 1.Sf7?
      • threat
        • 2.Qh6#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kg6
        • 2.Qg5#
      • 1...h6
        • 2.Qxh6#
      • 1...Kf8!
    • 1.Qg5+?
      • 1...Kxh8
        • 2.Qg8#
      • 1...Kf8!
    • 1.Qh6+?
      • 1...Kxh8
        • 2.Qf8#
        • 2.Qxh7#
      • 1...Kxh6!
    • 1.Qg3+?
      • 1...Kxf6
        • 2.Qe5#
      • 1...Kh6
        • 2.Sf7#
      • 1...Kxh8
        • 2.Qg8#
      • 1...Kf8!
    • 1.Qe7+?
      • 1...Kxh8
        • 2.Qf8#
        • 2.Qxh7#
      • 1...Kh6!
  • Keys
    • 1.Sg8!
      • 1...Kf8
        • 2.Qe7#
      • 1...Kxh8
        • 2.Qe5#
      • 1...h5
        • 2.Qh6#
      • 1...h6
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAB(A)
        • P(b);::QAB1(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(E)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
        • K(a);S_FLIGHT::S(E)
        • K(a);OGATE,S_FLIGHT,XS(E)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT,XS(E)::QAB(A)
      • P(b);::QAB1(A)
      • P(b);::QAB1(A),XP(b)
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