MESON Chess Problem Database

Problem Display
PID: 43960 (q7/1bP2B1p/8/p4k2/4N1Np/4Bn2/2Q5/2K4n w - - 0 1)

Barry, Henry William

Lasker's Chess Magazine, 1904

q7/1bP2B1p/8/p4k2/4N1Np/4Bn2/2Q5/2K4n

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sh6#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Sd6#
        • 2.Qxf3#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Sg3
        • 2.Qxf3#
      • 1...Qa6
        • 2.Qxf3#
      • 1...Qd8
        • 2.Qxf3#
      • 1...Qf8
        • 2.Qxf3#
      • 1...Se1
        • 2.Sd6#
      • 1...Sg1
        • 2.Sd6#
      • 1...Sd2
        • 2.Sd6#
      • 1...Sh2
        • 2.Sd6#
      • 1...Sd4
        • 2.Sd6#
      • 1...Se5
        • 2.Sd6#
        • 2.Sh6#
      • 1...Sg5
        • 2.Sd6#
      • 1...Bxe4!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxf3#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Kxg4
        • 2.Qd7#
      • 1...Bxe4
        • 2.Qd7#
      • 1...Se1
        • 2.Sd6#
      • 1...Sg1
        • 2.Sd6#
      • 1...Sd2
        • 2.Sd6#
      • 1...Sh2
        • 2.Sd6#
      • 1...Sd4
        • 2.Sd6#
      • 1...Se5
        • 2.Sd6#
      • 1...Sg5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(E)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);OGATEB,P_SPINS(b),S_FLIGHT,XS(D)::QAB(B)
        • S(a);::QAR2(B),XS(b)
        • Q(h);::QAR2(B),XS(b)
        • S(b);::S(D)
      • Refutation
        • B(f);XS(D)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B),XS(b)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(D)::QAB(B)
      • K(e);P_SPINS(b),S_FLIGHT,XS(E)::QAB(B)
      • B(f);SBLOCK,XS(D)::QAB(B)
      • S(b);::S(D)
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