MESON Chess Problem Database

Problem Display
PID: 172511 (8/8/2Q2pp1/N3k3/8/3p1K2/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

8/8/2Q2pp1/N3k3/8/3p1K2/8/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qd5#
  • Tries
    • 1.Sc4+?
      • 1...Kf5
        • 2.Qd5#
      • 1...Kd4!
    • 1.Qd6+?
      • 1...Kf5
        • 2.Qd5#
      • 1...Kxd6!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf5
        • 2.Qd5#
      • 1...f5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR2(C)
      • P(c);SBLOCK::QAB1(C)
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