MESON Chess Problem Database

Problem Display
PID: 67801 (qb6/p1rP4/2P4R/K1kP3R/2P2N2/4P3/2n5/1b3BB1 w - - 0 1)

Shire, David J

1st Comm., Phenix, 1994

qb6/p1rP4/2P4R/K1kP3R/2P2N2/4P3/2n5/1b3BB1

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.dxc6#
    • 1...Rxc6
      • 2.d6#
    • 1...Sa1
      • 2.e4#
    • 1...Se1
      • 2.e4#
    • 1...Sa3
      • 2.e4#
    • 1...Sxe3
      • 2.Bxe3#
    • 1...Sb4
      • 2.e4#
    • 1...Sd4
      • 2.exd4#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Se6#
      • 1...Qxc6
        • 2.dxc6#
      • 1...Rxc6
        • 2.d6#
      • 1...Sd4!
    • 1.e4+?
      • 1...Se3
        • 2.Bxe3#
      • 1...Sd4!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Sd3#
      • 1...Sxe3
        • 2.Bxe3#
      • 1...Sa1
        • 2.e4#
      • 1...Se1
        • 2.e4#
      • 1...Sa3
        • 2.e4#
      • 1...Sb4
        • 2.e4#
      • 1...Sd4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(f);OGATE,XP(I)::R(H)+P(G),XQ(f)
    • R(e);SBLOCK,XP(I)::R(H)+P(G)
    • S(b);N_GUARD::B(B)+P(C)
    • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
    • S(b);OGATE::P(C),XS(b)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(E)
      • Vars
        • Q(f);OGATE,XP(I)::R(H)+P(G),XQ(f)
        • R(e);SBLOCK,XP(I)::R(H)+P(G)
      • Refutation
        • S(b);
    • Try
      • P(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • R(H);
    • Threat
      • S(E)
    • Vars
      • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
      • S(b);N_GUARD::B(B)+P(C)
      • S(b);OGATE::P(C),XS(b)
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