MESON Chess Problem Database

Problem Display
PID: 161681 (b7/5Q1n/8/1NK1k3/8/5P2/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

b7/5Q1n/8/1NK1k3/8/5P2/8/8

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.f4#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sc4#
        • 2.Qf5#
        • 2.f4#
      • 1...Bxf3
        • 2.Qf5#
      • 1...Be4
        • 2.Sc4#
        • 2.f4#
      • 1...Bd5
        • 2.Qf5#
        • 2.f4#
      • 1...Sf6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf5#
      • 1...Sf6
        • 2.Qc7#
      • 1...Be4
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::P(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);XP(A)::QAR1(D)
      • Refutation
        • S(b);
  • Actual
    • S(B);
    • Threat
      • QAR1(D)
    • Vars
      • S(b);SBLOCK::QAB(D)
      • B(c);SBLOCK::P(A)
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