MESON Chess Problem Database

Problem Display
PID: 246720 (2n5/7R/N6Q/kB6/2P5/4K3/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Moscow Ty., 2010

2n5/7R/N6Q/kB6/2P5/4K3/8/8

#2

6 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rb7?
      • 1...Sa7
        • 2.Qb6#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Se7
        • 2.Qb6#
      • 1...Sd6!
    • 1.Qg7?
      • 1...Kb6
        • 2.Qc7#
      • 1...Sa7
        • 2.Qc7#
      • 1...Sb6
        • 2.Qc3#
      • 1...Sd6
        • 2.Qc7#
      • 1...Se7!
    • 1.Qh2?
      • 1...Kb6
        • 2.Qc7#
      • 1...Sa7
        • 2.Qc7#
      • 1...Sb6
        • 2.Qd2#
      • 1...Se7
        • 2.Qc7#
      • 1...Sd6!
    • 1.Qh4?
      • 1...Kb6
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Sb6
        • 2.Qe1#
      • 1...Sd6
        • 2.Qd8#
      • 1...Se7!
    • 1.Qc6?
      • 1...Sa7
        • 2.Qc7#
      • 1...Sd6
        • 2.Qc7#
      • 1...Se7
        • 2.Qc7#
      • 1...Sb6!
    • 1.Qd6?
      • 1...Sa7
        • 2.Qc7#
        • 2.Qd8#
      • 1...Sb6
        • 2.Qb4#
        • 2.Qd2#
      • 1...Se7
        • 2.Qc7#
        • 2.Qd8#
      • 1...Sxd6!
    • 1.Qf6?
      • 1...Sd6
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Sb6
        • 2.Qc3#
      • 1...Se7!
  • Keys
    • 1.Qf8!
      • 1...Kb6
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Sb6
        • 2.Qb4#
      • 1...Sd6
        • 2.Qd8#
      • 1...Se7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Vars
        • S(b);N_GUARD::QAB1(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • S(b);N_GUARD::QAB(E)
        • S(b);SBLOCK::QAB(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • S(b);N_GUARD::QAB(E)
        • S(b);SBLOCK::QAB(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • S(b);N_GUARD::QAB(E)
        • S(b);SBLOCK::QAB(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Vars
        • S(b);N_GUARD::QAB(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Refutation
        • S(b);XQ(E)
    • Try
      • Q(E);
      • Vars
        • S(b);N_GUARD::QAB(E)
        • S(b);SBLOCK::QAB(E)
      • Refutation
        • S(b);
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • S(b);N_GUARD::QAB(E)
      • S(b);SBLOCK::QAB1(E)
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