MESON Chess Problem Database

Problem Display
PID: 205057 (5K2/n2k1N1p/7R/1nQP4/8/8/8/8 w - - 0 1)

Matrenin, Mikhail Vasilevich

Zadachi i Etyudi, 1998

5K2/n2k1N1p/7R/1nQP4/8/8/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Rd6#
    • 1...Sc3
      • 2.Rd6#
    • 1...Sd4
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qc6#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Qe7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Sd6
        • 2.Rxd6#
        • 2.Rc7#
        • 2.Qxd6#
      • 1...Sc8!
    • 1.Re6?
      • threat
        • 2.Re7#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sc8
        • 2.Qc6#
      • 1...Sc7!
    • 1.Qc4?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sa3
        • 2.Rd6#
      • 1...Sc3
        • 2.Rd6#
      • 1...Sd4
        • 2.Rd6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sc8
        • 2.Qc6#
      • 1...Sc7!
  • Keys
    • 1.d6!
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sc6
        • 2.Qf5#
      • 1...Sa3
        • 2.Qc7#
      • 1...Sc3
        • 2.Qc7#
      • 1...Sd4
        • 2.Qc7#
      • 1...Sc8
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
    • S(b);N_GUARD::QAB1(A),XS(b)
    • S(b);N_GUARD::QAB1(A)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);OGATE,XR(C)::QAB1(A),XS(b)
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • S(b);
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(a);N_GUARD::R1(C)
        • S(a);N_GUARD::R1(C),XS(a)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(a);
  • Actual
    • P(B);
    • Vars
      • S(a);OGATE,XP(B)::R1(C),XS(a)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(b);SBLOCK::QAB(A)
      • S(a);N_GUARD::QAR1(A)
      • S(b);N_GUARD,SBLOCK::QAB(A),XS(a)
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