MESON Chess Problem Database

Problem Display
PID: 178049 (7R/N3P2Q/np2RKP1/3k4/1rN3p1/b3B3/1nr1P3/1b6 w - - 0 1)

Zarur, Almiro Elias

26th Place, 02. WCCT, 1980-1983

7R/N3P2Q/np2RKP1/3k4/1rN3p1/b3B3/1nr1P3/1b6

#2

10 + 9

1077 Boletim da UBP 1989

SOLUTION

  • SOUND
  • Sets
    • 1...Rcxc4
      • 2.Rd8#
    • 1...Ra4
      • 2.Sxb6#
    • 1...Rbxc4
      • 2.Qh5#
    • 1...Sxc4
      • 2.Qh1#
    • 1...b5
      • 2.Sb6#
  • Tries
    • 1.Rd6+?
      • 1...Ke4
        • 2.Rd4#
        • 2.Qh1#
        • 2.g7#
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxc4!
    • 1.Qf7?
      • threat
        • 2.Re5#
      • 1...Kxc4
        • 2.Rc6#
      • 1...Rcxc4
        • 2.Rd8#
      • 1...Rbxc4
        • 2.Rh5#
      • 1...Sxc4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Re5#
      • 1...Kxc4
        • 2.Rc6#
      • 1...Rcxc4
        • 2.Qd8#
      • 1...Rbxc4
        • 2.Rh5#
      • 1...Sxc4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK,XS(C)::R(J)
    • R(e);N_GUARD::S(C),XP(i)
    • R(e);SBLOCK,XS(C)::QAR(I)
    • S(b);SBLOCK,XS(C)::QAB(I)
    • P(i);S_CUTR(e)::S(C)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(g);S_FLIGHT,XS(C)
    • Try
      • Q(I);
      • Threat
        • QAB(I)+R(D),DCHECK
      • Vars
        • K(g);S_FLIGHT,XS(C)::QAB(I)+R(D),DCHECK
        • R(c);SBLOCK,XS(C)::R(J)
        • R(e);SBLOCK,XS(C)::R(J)
      • Refutation
        • S(b);XS(C)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+R(D),DCHECK
    • Vars
      • K(g);S_FLIGHT,XS(C)::QAB(I)+R(D),DCHECK
      • R(c);SBLOCK,XS(C)::QAR(I)
      • R(e);SBLOCK,XS(C)::R(J)
      • S(b);SBLOCK,XS(C)::QAB(I)
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