MESON Chess Problem Database

Problem Display
PID: 44852 (b7/7B/6R1/2nkp3/3rN3/B4p2/Kn6/4Q3 w - - 0 1)

Eddy, Edwin John

Recomm., BCF 043. Ty., 1942-1943

b7/7B/6R1/2nkp3/3rN3/B4p2/Kn6/4Q3

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rd6#
    • 1...Sc4
      • 2.Sc3#
    • 1...Sb3
      • 2.Bg8#
    • 1...Sd3
      • 2.Bg8#
    • 1...Sa4
      • 2.Bg8#
    • 1...Sxe4
      • 2.Bg8#
    • 1...Sa6
      • 2.Bg8#
    • 1...Sb7
      • 2.Bg8#
    • 1...Sd7
      • 2.Bg8#
  • Keys
    • 1.Qc1!
      • threat
        • 2.Rd6#
      • 1...Kxe4
        • 2.Rd6#
      • 1...Rxe4
        • 2.Qxc5#
      • 1...Sxe4
        • 2.Bg8#
      • 1...Sc4
        • 2.Sc3#
      • 1...Se6
        • 2.Sf6#
      • 1...Sb7
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(c);SBLOCK::R1(E)
    • S(a);SBLOCK::S(D)
    • S(d);N_GUARD::B(F)
    • S(d);N_GUARD,XS(D)::B(F)
  • Actual
    • Q(A);
    • Threat
      • R1(E)
    • Vars
      • K(e);S_FLIGHT,XS(D)::B(F)+R(E)
      • R(c);SBLOCK,XS(D)::QAR1(A),XS(d)
      • S(d);N_GUARD,SBLOCK,XS(D)::B(F)
      • S(a);SBLOCK::S(D)
      • S(d);SBLOCK::S(D)
      • S(d);OGATE::QAB1(A)
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