MESON Chess Problem Database

Problem Display
PID: 216208 (4k1b1/4PNPn/4Rn2/K5p1/3R2P1/5Q2/8/8 w - - 0 1)

Cook, Eugene Beauharnais

5. American Chess Congress, 1881

4k1b1/4PNPn/4Rn2/K5p1/3R2P1/5Q2/8/8

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf7
      • 2.Rd8#
      • 2.Qa8#
    • 1...Se4
      • 2.Rd8#
    • 1...Sxg4
      • 2.Rd8#
    • 1...Sh5
      • 2.Rd8#
    • 1...Sd7
      • 2.Sd6#
    • 1...Sf8
      • 2.exf8Q#
      • 2.exf8R#
      • 2.gxf8Q#
      • 2.gxf8R#
  • Tries
    • 1.Qc6+?
      • 1...Sd7
        • 2.Sd6#
      • 1...Kxf7!
    • 1.Qb7?
      • threat
        • 2.Sd6#
      • 1...Kxf7
        • 2.e8Q#
      • 1...Bxf7
        • 2.Rd8#
        • 2.Qa8#
        • 2.Qc8#
        • 2.Qb8#
      • 1...Se4!
  • Keys
    • 1.Rd7!
      • 1...Kxd7
        • 2.Qc6#
      • 1...Kxf7
        • 2.e8Q#
      • 1...Bxf7
        • 2.Rd8#
      • 1...Sxg4
        • 2.Rd8#
      • 1...Sxd7
        • 2.Sd6#
      • 1...Sd5
        • 2.Rd8#
      • 1...Se4
        • 2.Rd8#
      • 1...Sh5
        • 2.Rd8#
      • 1...Sf8
        • 2.exf8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);::R1(B)
    • S(b);XP(C)::R1(B)
    • S(b);SBLOCK::S(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);P_SPINS(b)::S(G)
      • Refutation
        • K(d);S_FLIGHT,XS(G)
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(G)::P=Q
      • Refutation
        • S(b);
  • Actual
    • R(B);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(B)::QAB1(A)
      • K(d);OGATE,P_SPINS(b),S_FLIGHT,XS(G)::P=Q
      • B(e);SBLOCK,XS(G)::R1(B)
      • S(b);XP(C)::R1(B)
      • S(b);SBLOCK,XR(B)::S(G)
      • S(b);::R1(B)
      • S(c);OGATE::PXS(c)=S
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