MESON Chess Problem Database

Problem Display
PID: 222720 (8/1B4K1/4N3/1n1p1k2/2NP4/1Qp5/4R1P1/8 w - - 0 1)

Gilberg, Charles Alexander

Baltimore American and Commercial Advertiser, 1883

8/1B4K1/4N3/1n1p1k2/2NP4/1Qp5/4R1P1/8

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qf3#
      • 2.Qh3#
  • Tries
    • 1.Se3+?
      • 1...Ke4
        • 2.Qc2#
      • 1...Kxe6!
    • 1.Qxc3?
      • threat
        • 2.Qf3#
        • 2.Qh3#
      • 1...Kg4
        • 2.Qh3#
      • 1...Sxd4
        • 2.Qh3#
      • 1...Sxc3!
  • Keys
    • 1.Re4!
      • 1...Kxe4
        • 2.Qc2#
      • 1...Sxd4
        • 2.Sd6#
      • 1...dxc4
        • 2.Qxb5#
        • 2.g4#
      • 1...dxe4
        • 2.Se3#
      • 1...Sa3
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sa7
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...c2
        • 2.Qf3#

This is a version of 44386

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::QAB(C)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT,XS(F)
    • Try
      • Q(C);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB1(C)
        • S(b);XP(E)::QAB(C)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • R(A);
    • Vars
      • K(d);OGATEB,P_SPINP(c),S_FLIGHT,XR(A)::QAB(C)
      • S(b);N_GUARD,XP(E)::S(D)
      • P(c);XR(A)::S(D)
      • S(b);N_GUARD::S(D)
      • S(b);N_GUARD::S(D),XS(b)
      • P(a);OGATE::QAR2(C)
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