MESON Chess Problem Database

Problem Display
PID: 101914 (3B1N2/8/R1N5/4rk1n/3R1Pp1/3pPnb1/p7/K1Q5 w - - 0 1)

Shire, David J

diagrammes, 1990

3B1N2/8/R1N5/4rk1n/3R1Pp1/3pPnb1/p7/K1Q5

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Se7#
      • 2.e4#
    • 1...Rb5
      • 2.Se7#
      • 2.e4#
    • 1...Rc5
      • 2.Se7#
      • 2.e4#
    • 1...Rd5
      • 2.Se7#
      • 2.e4#
    • 1...Re7
      • 2.Sxe7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Se7#
      • 1...Bxf4
        • 2.e4#
      • 1...Sxd4
        • 2.Qxe5#
      • 1...Sxf4
        • 2.e4#
      • 1...Bh4!
  • Keys
    • 1.Ra5!
      • threat
        • 2.e4#
      • 1...Sxd4
        • 2.Rxe5#
      • 1...Sd2
        • 2.Rxe5#
      • 1...Sg5
        • 2.Rxe5#
      • 1...Sf6
        • 2.Se7#
      • 1...d2
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::S(G),XR(f)
  • Tries
    • Try
      • Q(B);P_PINR(f)
      • Threat
        • S(G)
      • Vars
        • B(d);SBLOCK,XP(E)::P(C)
        • S(c);N_GUARD,XR(D)::QAR1(B),XR(f)
        • S(h);SBLOCK,XP(E)::P(C)
      • Refutation
        • B(d);
  • Actual
    • R(F);P_PINR(f)
    • Threat
      • P(C)
    • Vars
      • S(c);N_GUARD,XR(D)::R1(F),XR(f)
      • S(c);N_GUARD::R1(F),XR(f)
      • S(h);SBLOCK::S(G)
      • P(b);OGATEB::QAB(B)
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