MESON Chess Problem Database

Problem Display
PID: 208771 (8/2K2p2/2n2Q2/2BbNp2/2n2k2/2R2P2/2P2P2/8 w - - 0 1)

Cook, Eugene Beauharnais

Dubuque Chess Journal, 1876

8/2K2p2/2n2Q2/2BbNp2/2n2k2/2R2P2/2P2P2/8

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Be3#
    • 1...Sd2
      • 2.Be3#
    • 1...Sa3
      • 2.Be3#
    • 1...Se3
      • 2.Bxe3#
    • 1...S4a5
      • 2.Be3#
    • 1...S4xe5
      • 2.Qh6#
    • 1...Sb6
      • 2.Be3#
    • 1...Sd6
      • 2.Be3#
    • 1...S6xe5
      • 2.Qh6#
  • Tries
    • 1.Rxc4+?
      • 1...Bxc4
        • 2.Be3#
      • 1...Be4
        • 2.Be3#
        • 2.Rxe4#
      • 1...Sd4!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sd3#
        • 2.Qh4#
        • 2.Qh6#
      • 1...Bxf3
        • 2.Qh6#
      • 1...Sxe3
        • 2.Bxe3#
      • 1...S4xe5
        • 2.Qh6#
      • 1...S6xe5
        • 2.Qh6#
      • 1...Be4
        • 2.Rxe4#
      • 1...Sb2
        • 2.Qh4#
        • 2.Qh6#
      • 1...Sb4
        • 2.Qh4#
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::B(E)
    • S(a);N_GUARD::B(E),XS(a)
    • S(a);SBLOCK,XS(F)::QAB(G)
    • S(e);SBLOCK,XS(F)::QAB(G)
  • Tries
    • Try
      • R(C);CHECK,XS(a)
      • Vars
        • B(c);XR(C)::B(E)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • R(C);
    • Threat
      • DUALS(3)
    • Vars
      • B(c);XP(D)::QAB(G)
      • S(a);OGATE,XR(C)::B(E),XS(a)
      • S(a);XS(F)::QAB(G)
      • S(e);XS(F)::QAB(G)
      • B(c);N_GUARD::R1(C),XB(c)
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