MESON Chess Problem Database

Problem Display
PID: 216134 (8/2P1Q3/4PKN1/3p4/2RpkP2/4Pnp1/2P1n1P1/5N2 w - - 0 1)

Matrenin, Mikhail Vasilevich

Probleemblad, 1980

8/2P1Q3/4PKN1/3p4/2RpkP2/4Pnp1/2P1n1P1/5N2

#2

11 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qd3#
      • 1...Sxf4
        • 2.Sxg3#
      • 1...dxc4
        • 2.Qa8#
      • 1...Sc1
        • 2.Sxg3#
      • 1...Se1
        • 2.Sd2#
      • 1...Se5
        • 2.Sd2#
      • 1...Sc3!
    • 1.Qh7?
      • threat
        • 2.Sh4#
        • 2.Se5#
        • 2.Se7#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Sxf4
        • 2.Sxf4#
      • 1...dxc4
        • 2.Se7#
      • 1...Sh4
        • 2.Sxh4#
      • 1...Se5
        • 2.Sxe5#
      • 1...Sg5!
  • Keys
    • 1.c8S!
      • threat
        • 2.Sd6#
      • 1...dxc4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • S(a);N_GUARD,XP(F)::S(A),XP(c)
        • P(f);N_SPINP(d),OGATEB,XR(E)::QAB(K)
        • S(a);N_GUARD::S(A),XP(c)
        • S(b);N_GUARD::S(A)
      • Refutation
        • S(a);
    • Try
      • Q(K);
      • Threat
        • DUALS(5)
      • Vars
        • S(a);XP(F)::QAB(K)+S(I),XS(a)
        • P(f);N_SPINP(d),XR(E)::QAB(K)+S(I)
        • S(b);::QAB(K)+S(I),XS(b)
      • Refutation
        • S(b);
  • Actual
    • P(J);
    • Threat
      • S(J)
    • Vars
      • P(f);N_SPINP(d),OGATEB,XR(E)::QAB(K)
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