MESON Chess Problem Database

Problem Display
PID: 141448 (N3n2q/8/1Q3b1R/r2k4/3P1p2/1P1R1K2/n1N5/8 w - - 0 1)

Heyl, Peter

Die Schwalbe, 2010

N3n2q/8/1Q3b1R/r2k4/3P1p2/1P1R1K2/n1N5/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qxa5#
    • 1...Bh4
      • 2.Qxa5#
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Be5
      • 2.Qxa5#
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Bg5
      • 2.Qxa5#
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Be7
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Bg7
      • 2.Qxa5#
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Bd8
      • 2.Qc6#
      • 2.Qe6#
      • 2.Qb7#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sc3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sg7
      • 2.Sc7#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qe6#
      • 1...Bxd4
        • 2.Qc6#
      • 1...fxe3
        • 2.Sxe3#
      • 1...Ra6
        • 2.Qc5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sc7#
      • 1...Qg8!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qc6#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Sxc3
        • 2.Sb4#
      • 1...Sd6
        • 2.Sc7#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Ra6
        • 2.Rc5#
      • 1...Sb4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(e);P_SPINB(e),XP(E)::QAR(F),XR(c)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(f);N_GUARD::S(H)
    • S(f);N_GUARD::S(H),XS(f)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(F)
      • Vars
        • B(e);XP(E)::QAB1(F)
        • P(b);XR(C)::S(A),XP(b)
        • R(c);N_GUARD::QAR1(F)
        • S(f);N_GUARD::S(H)
        • S(f);N_GUARD::S(H),XS(f)
      • Refutation
        • Q(g);
  • Actual
    • R(C);
    • Threat
      • QAB1(F)
    • Vars
      • B(e);XP(E)::QAB1(F)
      • S(a);N_GUARD,XR(C)::S(A)
      • S(f);N_GUARD::S(H)
      • R(c);N_GUARD::R1(C),XR(c)
      • R(c);N_GUARD::R1(C)
      • S(a);N_GUARD::S(A),XS(a)
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