MESON Chess Problem Database

Problem Display
PID: 2337 (1b3Rn1/rB1pB3/QP1Np3/1pK1k3/1P6/8/6n1/8 w - - 0 1)

Gardner, John Carey

Source?, 0000

1b3Rn1/rB1pB3/QP1Np3/1pK1k3/1P6/8/6n1/8

#2

8 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb7
      • 2.Qa1#
    • 1...Bxd6+
      • 2.Bxd6#
  • Tries
    • 1.Rf1?
      • threat
        • 2.Sf7#
      • 1...Bxd6+
        • 2.Bxd6#
      • 1...Rxb7
        • 2.Qa1#
      • 1...Sh6
        • 2.Bf6#
      • 1...Sf4!
    • 1.Rf2?
      • threat
        • 2.Sf7#
      • 1...Bxd6+
        • 2.Bxd6#
      • 1...Rxb7
        • 2.Qa1#
      • 1...Sh6
        • 2.Bf6#
      • 1...Sf4!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Sf7#
      • 1...Bxd6+
        • 2.Bxd6#
      • 1...Rxb7
        • 2.Qa1#
      • 1...Sf4
        • 2.Re3#
      • 1...Sh6
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD,XB(F)::QAB(C)
    • B(g);CHECK,OGATE,XS(E)::B(G),XB(g)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(E)
      • Vars
        • B(g);CHECK,OGATE,XS(E)::B(G),XB(g)
        • R(e);N_GUARD,XB(F)::QAB(C)
        • S(h);N_GUARD::B(G)
      • Refutation
        • S(a);
    • Try
      • R(H);
      • Threat
        • S(E)
      • Vars
        • B(g);CHECK,OGATE,XS(E)::B(G),XB(g)
        • R(e);N_GUARD,XB(F)::QAB(C)
        • S(h);N_GUARD::B(G)
      • Refutation
        • S(a);
  • Actual
    • R(H);
    • Threat
      • S(E)
    • Vars
      • B(g);CHECK,OGATE,XS(E)::B(G),XB(g)
      • R(e);N_GUARD,XB(F)::QAB(C)
      • S(a);N_GUARD,SBLOCK::R(H)
      • S(h);N_GUARD::B(G)
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