MESON Chess Problem Database

Problem Display
PID: 172237 (8/8/8/5b1p/7k/7N/7R/3QK3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/8/8/5b1p/7k/7N/7R/3QK3

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qg5#
      • 1...Kg3
        • 2.Qf4#
      • 1...Kg4
        • 2.Qf4#
      • 1...Bxh3
        • 2.Qf4#
      • 1...Bg4!
    • 1.Qd4+?
      • 1...Kg3
        • 2.Qf4#
      • 1...Bg4
        • 2.Qf2#
      • 1...Be4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qg5#
      • 1...Kg3
        • 2.Qf4#
      • 1...Kg4
        • 2.Qf4#
      • 1...Bxh3
        • 2.Qf4#
      • 1...Bg4
        • 2.Qf2#

This is a version of 165523

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • B(b);N_GUARD,P_SPINB(b),XS(D)::QAR2(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • B(b);P_SPINB(b),SBLOCK::QAB(A)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • B(b);N_GUARD,P_SPINB(b),XS(D)::QAR2(A)
      • B(b);SBLOCK::QAB(A)
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