MESON Chess Problem Database

Problem Display
PID: 44407 (8/5n2/B3p1q1/n7/pk2NQ2/p4Nb1/P2P3r/1K5b w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

8/5n2/B3p1q1/n7/pk2NQ2/p4Nb1/P2P3r/1K5b

#2

7 + 10

176 Crumbs from the Chess-board 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Qxd2#
    • 1...Se5
      • 2.Qf8#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qc5#
        • 2.Qb6#
        • 2.Qc3#
      • 1...Sb3
        • 2.Qb6#
        • 2.Qc3#
      • 1...Sc4
        • 2.Qc5#
        • 2.Qc3#
      • 1...Sb7
        • 2.Qb6#
        • 2.Qc3#
      • 1...Qf5
        • 2.Qc3#
      • 1...Qh5
        • 2.Qc3#
      • 1...Qg5
        • 2.Qc3#
      • 1...Qf6
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qg7
        • 2.Qc5#
        • 2.Qb6#
      • 1...Rh5
        • 2.Qc3#
      • 1...Bf2
        • 2.Qc3#
      • 1...Be5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Bd6
        • 2.Qb6#
        • 2.Qc3#
      • 1...Bc7
        • 2.Qc5#
        • 2.Qc3#
      • 1...Sd6
        • 2.Qc5#
        • 2.Qc3#
      • 1...e5
        • 2.Qc5#
        • 2.Qc3#
      • 1...Qxe4+!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sd3#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Sxe5
        • 2.Qf8#
      • 1...Sb3
        • 2.Sc6#
      • 1...Sc4
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sb7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,XP(C)::QAB(F),XR(b)
    • S(j);OGATE::QAB(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(i);::QAB1(F)
        • Q(i);N_PINS(E)::QAB1(F)
        • R(b);::QAB1(F)
        • B(d);::QAB1(F)
      • Refutation
        • Q(i);CHECK,XS(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(b);OGATE,XP(C)::QAB(F),XR(b)
      • S(j);OGATE,XS(D)::QAB(F)
      • S(g);N_GUARD::S(D)
      • S(g);N_GUARD::S(D),XS(g)
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