MESON Chess Problem Database

Problem Display
PID: 133516 (8/5Q2/8/7P/6P1/5B2/4n1R1/K6k w - - 0 1)

Markov, Evgeny Viktorovich

Probleemblad, 2008

8/5Q2/8/7P/6P1/5B2/4n1R1/K6k

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qa7?
      • threat
        • 2.Rxe2#
      • 1...Sg1
        • 2.Qxg1#
      • 1...Sc1
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Qg1#
      • 1...Sc3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Qg1#
      • 1...Sg3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Qg1#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sd4!
    • 1.Qc7?
      • threat
        • 2.Qh2#
      • 1...Sf4
        • 2.Qc1#
      • 1...Sg3!
    • 1.Qe7?
      • threat
        • 2.Qh4#
      • 1...Sf4
        • 2.Qe1#
      • 1...Sg1!
  • Keys
    • 1.Qa2!
      • 1...Sg1
        • 2.Rh2#
      • 1...Sc1
        • 2.Rg3#
      • 1...Sc3
        • 2.Rg3#
      • 1...Sg3
        • 2.Rxg3#
      • 1...Sd4
        • 2.Qb1#
      • 1...Sf4
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • B(C)+R(B),XS(b)
      • Vars
        • S(b);N_GUARD::QAR1(F),XS(b)
        • S(b);N_GUARD::QAR1(F)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(b);N_GUARD::QAR(F)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Threat
        • QAR(F)
      • Vars
        • S(b);OGATE::QAR(F)
      • Refutation
        • S(b);
  • Actual
    • Q(F);
    • Vars
      • S(b);SBLOCK::B(C)+R(B),DCHECK
      • S(b);::B(C)+R(B)
      • S(b);::B(C)+R(B),XS(b)
      • S(b);N_GUARD::QAR(F)
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