MESON Chess Problem Database

Problem Display
PID: 76372 (1Kn1N1n1/1R5R/3PkP2/4P3/4Q3/1br3r1/8/4N2B w - - 0 1)

Heyl, Peter

Troll, 2007

1Kn1N1n1/1R5R/3PkP2/4P3/4Q3/1br3r1/8/4N2B

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rcd3
      • 2.Sc7#
    • 1...Rce3
      • 2.Sc7#
    • 1...Rcf3
      • 2.Sc7#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Rgd3
      • 2.Sg7#
    • 1...Rge3
      • 2.Sg7#
    • 1...Rgf3
      • 2.Sg7#
    • 1...Rh3
      • 2.Sg7#
    • 1...Rg7
      • 2.Sxg7#
    • 1...Bc4
      • 2.Sc7#
    • 1...Sxd6
      • 2.exd6#
    • 1...Sxf6
      • 2.exf6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sd4#
      • 1...Rcxf3
        • 2.Sc7#
      • 1...Rgxf3
        • 2.Sg7#
      • 1...Rd3
        • 2.Sc7#
      • 1...Rc4!
    • 1.Qg4+?
      • 1...Kxe5
        • 2.Rh5#
        • 2.Qe4#
      • 1...Rxg4!
    • 1.d7?
      • threat
        • 2.d8S#
      • 1...Rcd3
        • 2.Sc7#
      • 1...Rgd3!
    • 1.f7?
      • threat
        • 2.f8S#
      • 1...Rgf3
        • 2.Sg7#
      • 1...Rcf3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf4#
      • 1...Rcxd3
        • 2.Sc7#
      • 1...Rgxd3
        • 2.Sg7#
      • 1...Rf3
        • 2.Sg7#
      • 1...Rg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::S(J)
    • R(b);N_GUARD::S(J),XR(b)
    • R(c);N_GUARD::S(J)
    • R(c);N_GUARD::S(J),XR(c)
    • B(a);S_CUTR(b)::S(J)
    • S(e);OGATE,XP(E)::QAR(C)+P(D),XS(e)
    • S(f);OGATE,XP(F)::QAR(C)+P(D),XS(f)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(b);N_GUARD,XS(A)::S(J)
        • R(c);N_GUARD,XS(A)::S(J)
        • R(b);N_GUARD::S(J)
      • Refutation
        • R(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • R(c);XQ(C)
    • Try
      • P(E);
      • Threat
        • P=S
      • Vars
        • R(b);N_GUARD::S(J)
      • Refutation
        • R(c);
    • Try
      • P(F);
      • Threat
        • P=S
      • Vars
        • R(c);N_GUARD::S(J)
      • Refutation
        • R(b);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(b);N_GUARD,XS(A)::S(J)
      • R(c);N_GUARD,XS(A)::S(J)
      • R(c);N_GUARD::S(J)
      • R(c);N_GUARD::QAB(C),XR(c)
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