MESON Chess Problem Database

Problem Display
PID: 172380 (8/8/8/8/5Q2/4K2n/4RN2/6kr w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/8/8/5Q2/4K2n/4RN2/6kr

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Sxh3#
    • 1...Sxf2
      • 2.Qxf2#
  • Tries
    • 1.Qg4+?
      • 1...Kh2
        • 2.Sxh3#
      • 1...Kf1!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxh1#
      • 1...Kf1
        • 2.Sxh3#
      • 1...Kh2
        • 2.Sxh3#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Rh2
        • 2.Re1#

FEATURES

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