MESON Chess Problem Database

Problem Display
PID: 2358 (5B2/1b4K1/q3p3/p3kp1R/3b4/2Nn1BP1/8/1Q2N3 w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

5B2/1b4K1/q3p3/p3kp1R/3b4/2Nn1BP1/8/1Q2N3

#2

8 + 8

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

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Sxd3#
    • 1...Qc6
      • 2.Sxd3#
    • 1...Qd6
      • 2.Sxd3#
    • 1...Qa7
      • 2.Sxd3#
    • 1...Qa8
      • 2.Sxd3#
    • 1...Bxf3
      • 2.Sxf3#
    • 1...Bc6
      • 2.Qb8#
  • Tries
    • 1.Bxb7?
      • threat
        • 2.Sf3#
      • 1...Sxe1
        • 2.Qe4#
      • 1...Qc6
        • 2.Sxd3#
      • 1...Qxb7+!
    • 1.Bd6+?
      • 1...Qxd6
        • 2.Sxd3#
      • 1...Kxd6+!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Sf3#
      • 1...Qxc6
        • 2.Sxd3#
      • 1...Bxc6
        • 2.Qb8#
      • 1...Sxe1
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::S(B),XS(a)
    • B(h);XB(D)::S(B),XB(h)
    • B(h);OGATE::QAB(A)
  • Tries
    • Try
      • B(D);XB(h)
      • Threat
        • S(B)
      • Vars
        • S(a);OGATE,XS(B)::QAR1(A)
        • Q(f);N_GUARD::S(B),XS(a)
      • Refutation
        • Q(f);CHECK,XB(D)
    • Try
      • B(H);CHECK
      • Vars
        • Q(f);SBLOCK,XB(H)::S(B),XS(a)
      • Refutation
        • K(d);CHECK,N_SPINP(e),S_FLIGHT,XB(H)
  • Actual
    • B(D);
    • Threat
      • S(B)
    • Vars
      • Q(f);N_GUARD,XB(D)::S(B),XS(a)
      • B(h);OGATE,XB(D)::QAB(A)
      • S(a);OGATE,XS(B)::QAR1(A)
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