MESON Chess Problem Database

Problem Display
PID: 169115 (7Q/6B1/8/K7/2k5/1N6/2b5/7B w - - 0 1)

Abdullayev, Suleyman

Muller, Dieter

Sp. Prize, SuperProblem 089. TT, 2013

7Q/6B1/8/K7/2k5/1N6/2b5/7B

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qg8#
  • Tries
    • 1.Sd2+?
      • 1...Kc5
        • 2.Bf8#
        • 2.Qf8#
      • 1...Kd3!
    • 1.Qh3?
      • threat
        • 2.Qc3#
      • 1...Bd3
        • 2.Qe6#
      • 1...Be4!
    • 1.Qh4+?
      • 1...Kxb3
        • 2.Qa4#
      • 1...Kd3
        • 2.Qe4#
      • 1...Be4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qb5#
      • 1...Kxb3
        • 2.Qa4#
      • 1...Kd3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB(E)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • B(a);SBLOCK::QAB(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(B)::QAB1(E)
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT,XS(B)::QAB1(E)
      • K(b);S_FLIGHT::QAB1(E)
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