MESON Chess Problem Database

Problem Display
PID: 172268 (4B3/3P2K1/1n1pk3/1Q6/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Twoja sudba, 1996

4B3/3P2K1/1n1pk3/1Q6/8/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5+?
      • 1...Ke7
        • 2.Qf6#
      • 1...Kxf5!
    • 1.d8Q?
      • threat
        • 2.Bf7#
        • 2.Qf6#
      • 1...d5
        • 2.Qf6#
      • 1...Sd7
        • 2.Bxd7#
        • 2.Bf7#
        • 2.Qdxd7#
      • 1...Sd5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.d8S#
      • 1...Sxd7
        • 2.Bf7#
      • 1...d5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(B)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • P=S
    • Vars
      • S(a);SBLOCK,XP(B)::B(D)
      • P(b);SBLOCK::QAR1(A)
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