MESON Chess Problem Database

Problem Display
PID: 2348 (8/3B2pN/1n1p3b/3R4/1Pb1k1K1/p4p2/1B6/3N4 w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

8/3B2pN/1n1p3b/3R4/1Pb1k1K1/p4p2/1B6/3N4

#2

7 + 8

1679 American Chess Nuts 1868
176 Crumbs from the Chess-board 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Bf5#
    • 1...Be3
      • 2.Sc3#
    • 1...Sxd5
      • 2.Bf5#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Sg5+?
      • 1...Kxd5
        • 2.Se3#
      • 1...Bxg5!
    • 1.Bxg7?
      • threat
        • 2.Sf6#
        • 2.Rd4#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Bxd5
        • 2.Bf5#
      • 1...Sxd5
        • 2.Bf5#
      • 1...Sxd7
        • 2.Rd4#
      • 1...Be3
        • 2.Sc3#
        • 2.Sf6#
      • 1...Bg5
        • 2.Rd4#
      • 1...Bxg7!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Bxd5
        • 2.Bf5#
      • 1...Sxd5
        • 2.Bf5#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Be3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);SBLOCK,XR(E)::B(F)
    • B(g);SBLOCK::S(A)
    • S(e);SBLOCK,XR(E)::B(F)
    • P(h);N_GUARD::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(E)::S(A)
      • Refutation
        • B(g);XS(G)
    • Try
      • B(B);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XR(E)::S(A)
        • B(c);SBLOCK,XR(E)::B(F)
        • S(e);SBLOCK,XR(E)::B(F)
        • S(e);XB(F)::R1(E)
        • B(g);::R1(E)
      • Refutation
        • B(g);XB(B)
  • Actual
    • B(B);
    • Threat
      • R1(E)
    • Vars
      • K(d);S_FLIGHT,XR(E)::S(A)
      • B(c);SBLOCK,XR(E)::B(F)
      • S(e);SBLOCK,XR(E)::B(F)
      • P(h);XB(B)::S(G),XP(h)
      • B(g);SBLOCK::S(A)
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