MESON Chess Problem Database

Problem Display
PID: 172206 (2Q5/8/1p6/kp6/3P4/1P6/K7/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

200 Shakhmatni Zadachi, 1983

2Q5/8/1p6/kp6/3P4/1P6/K7/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kb2?
      • 1...Kb4
        • 2.Qc3#
      • 1...b4!
    • 1.Qc6?
      • 1...Ka6
        • 2.Qa8#
      • 1...b4
        • 2.Qa4#
      • 1...Kb4!
    • 1.Qf8?
      • threat
        • 2.Qa3#
      • 1...Ka6
        • 2.Qa8#
      • 1...b4!
  • Keys
    • 1.Qe8!
      • 1...Kb4
        • 2.Qe1#
      • 1...Ka6
        • 2.Qa8#
      • 1...b4
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • P(b);
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(D)
        • P(b);OGATE::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB(D)
      • K(a);P-FLIGHT::QAR2(D)
      • P(b);OGATE::QAR1(D)
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