MESON Chess Problem Database

Problem Display
PID: 153826 (8/pK6/4N3/3kNB2/8/6Q1/Pn2P3/3n4 w - - 0 1)

Green, S (= Laws, BG)

Cheltenham Examiner, 1891

(First published on Wed May 20 1891)

8/pK6/4N3/3kNB2/8/6Q1/Pn2P3/3n4

#2

7 + 4

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Sd3
        • 2.Qd4#
      • 1...Sa4
        • 2.Qd4#
      • 1...Sc4
        • 2.Qd4#
      • 1...Sxc3!
    • 1.Qe3?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Sd3
        • 2.Qd4#
      • 1...Sa4
        • 2.Qd4#
      • 1...Sxe3!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qb3#
      • 1...Sxc4
        • 2.e4#
      • 1...Sf2
        • 2.Se3#
      • 1...Sc3
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • S(b);::QAR1(C)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • S(b);::QAR1(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • S(D);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB1(C)
      • S(b);SBLOCK,XS(D)::P(B)
      • S(a);N_GUARD::S(D)
      • S(a);N_GUARD::S(D),XS(a)
      • S(b);N_GUARD::QAR2(C),XS(b)
      • S(b);N_GUARD::QAR2(C)
      • P(d);N_GUARD::S(D)
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