MESON Chess Problem Database

Problem Display
PID: 161523 (6K1/5np1/7k/8/5P2/8/3QB3/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

6K1/5np1/7k/8/5P2/8/3QB3/8

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qh7#
      • 1...g6
        • 2.Qh3#
      • 1...Sg5!
    • 1.Qd5?
      • threat
        • 2.Qh5#
      • 1...Kg6
        • 2.Qe6#
      • 1...Sg5
        • 2.Qxg5#
      • 1...g5
        • 2.Qe6#
      • 1...g6
        • 2.Qh1#
      • 1...Se5!
    • 1.Qd6+?
      • 1...g6
        • 2.Qf8#
      • 1...Sxd6!
  • Keys
    • 1.Qd7!
      • 1...Kg6
        • 2.Qe6#
      • 1...Se5
        • 2.Qxg7#
      • 1...Sg5
        • 2.Qxg7#
      • 1...Sd6
        • 2.Qxg7#
      • 1...Sd8
        • 2.Qxg7#
      • 1...Sh8
        • 2.Qxg7#
      • 1...g5
        • 2.Qe6#
      • 1...g6
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);SBLOCK::QAR(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • P(c);N_GUARD::QAR(A)
        • P(c);SBLOCK::QAR(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(A)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • S(b);OGATE::QAB1(A),XP(c)
      • P(c);N_GUARD::QAR(A)
      • P(c);SBLOCK::QAR(A)
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