MESON Chess Problem Database

Problem Display
PID: 159489 (8/3K2N1/1Q2p3/1n1k4/8/3P4/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/3K2N1/1Q2p3/1n1k4/8/3P4/8/8

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qd6#
    • 1...Sc3
      • 2.Qd6#
    • 1...Sd4
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Qc5#
        • 2.Qxb5#
      • 1...Sa3
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sd4
        • 2.Qxd4#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sd6
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Ke5!
    • 1.Se8?
      • 1...Sa3
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sd4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...e5
        • 2.Sf6#
      • 1...Ke5!
  • Keys
    • 1.Sh5!
      • 1...Ke5
        • 2.Qc5#
      • 1...Sa3
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sd4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...e5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD,SBLOCK::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
  • Tries
    • Try
      • S(D);XP(c)
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • S(a);N_GUARD::QAR1(B)
        • S(a);N_GUARD,SBLOCK::QAR1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
        • P(c);SBLOCK::S(D)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD,SBLOCK::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • P(c);SBLOCK::S(D)
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