MESON Chess Problem Database

Problem Display
PID: 171362 (8/K7/nQ6/8/k7/P7/1P6/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Temp-64 (Nikolaev), 1995

8/K7/nQ6/8/k7/P7/1P6/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sc5
      • 2.Qb4#
    • 1...Sc7
      • 2.Qb4#
    • 1...Sb8
      • 2.Qb4#
  • Tries
    • 1.Kb7?
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc7
        • 2.Qb4#
      • 1...Sb8
        • 2.Qb4#
      • 1...Sc5+!
    • 1.Ka8?
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sb8
        • 2.Qb4#
      • 1...Sc7+!
    • 1.Qc6+?
      • 1...Ka5
        • 2.Qxa6#
      • 1...Kb3!
  • Keys
    • 1.Qb7!
      • 1...Ka5
        • 2.Qxa6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sc7
        • 2.Qb4#
      • 1...Sb8
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD::QAR1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C),XS(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR1(C)
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