MESON Chess Problem Database

Problem Display
PID: 172544 (6r1/3PK1k1/8/7Q/4N3/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2004

6r1/3PK1k1/8/7Q/4N3/8/8/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kh8
        • 2.Qh6#
      • 1...Kxg6!
    • 1.Qg5+?
      • 1...Kh8
        • 2.Qh6#
      • 1...Kh7!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qh7#
      • 1...Re8+
        • 2.dxe8S#
      • 1...Rh8
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);CHECK,OGATE::PXR(b)=S
      • R(b);SBLOCK::QAR2(B)
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