MESON Chess Problem Database

Problem Display
PID: 222734 (3N2B1/pPpk1P2/Pp1pNn1R/1n1p3p/Q2P1K1B/8/8/8 w - - 0 1)

Anonymous

Chess Monthly, 1884

3N2B1/pPpk1P2/Pp1pNn1R/1n1p3p/Q2P1K1B/8/8/8

#2

11 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sf8#
    • 1...Sg4
      • 2.Sf8#
    • 1...Se8
      • 2.Sf8#
      • 2.f8S#
    • 1...Sxg8
      • 2.Sf8#
  • Tries
    • 1.Sf8+?
      • 1...Kxd8
        • 2.Bxf6#
      • 1...Ke7!
    • 1.Bxf6?
      • threat
        • 2.Sf8#
      • 1...c5
        • 2.Qxb5#
      • 1...c6!
    • 1.Qxb5+?
      • 1...Ke7
        • 2.Bxf6#
        • 2.Qe8#
        • 2.f8Q#
        • 2.f8B#
      • 1...c6!
    • 1.b8S+?
      • 1...Ke7
        • 2.Bxf6#
        • 2.f8Q#
      • 1...Kc8!
  • Keys
    • 1.Sc6!
      • 1...Kxc6
        • 2.b8S#
      • 1...Kxe6
        • 2.f8S#
      • 1...Sxd4
        • 2.Sf8#
      • 1...Sxg8
        • 2.Sb8#
      • 1...Sh7
        • 2.Sb8#
      • 1...Sa3
        • 2.Sf8#
      • 1...Sc3
        • 2.Sf8#
      • 1...Se4
        • 2.Sb8#
      • 1...Sg4
        • 2.Sb8#
      • 1...Se8
        • 2.Sb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(f);::S(F)
    • S(f);XB(K)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINS(a),P-FLIGHT,P_SPINS(f),XS(J)::B(D),XS(f)
      • Refutation
        • K(i);N_SPINS(a),P-FLIGHT,P_SPINS(f)
    • Try
      • B(D);XS(f)
      • Threat
        • S(F)
      • Vars
        • P(h);N_GUARD::QAB(A),XS(a)
      • Refutation
        • P(h);N_SPINS(a)
    • Try
      • Q(A);CHECK,XS(a)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • P(H);CHECK
      • Refutation
        • K(i);N_SPINS(a),S_FLIGHT
  • Actual
    • S(J);N_PINS(a)
    • Vars
      • K(i);P_SPINS(a),S_FLIGHT,XS(J)::P=S
      • K(i);P_SPINS(f),S_FLIGHT,XS(F)::P=S
      • S(a);XP(B)::S(F)
      • S(f);XB(K)::S(J)
      • S(f);::S(J)
      • S(a);::S(F)
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Developed and maintained by Brian Stephenson.
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