MESON Chess Problem Database

Problem Display
PID: 258318 (4Rb2/1N1b2N1/1p2B3/1Pn2n2/4k3/8/Q7/3K2B1 w - - 0 1)

Guest, HJ

English Mechanic and World of Science, 1891

(First published on Fri Sep 11 1891)

4Rb2/1N1b2N1/1p2B3/1Pn2n2/4k3/8/Q7/3K2B1

#2

8 + 6

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc4#
      • 2.Qc2#
  • Tries
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qc4#
        • 2.Qc2#
        • 2.Qd2#
      • 1...Kf4!
    • 1.Bxf5+?
      • 1...Kf3
        • 2.Qf2#
      • 1...Kf4!
    • 1.Qe2+?
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kf4!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qxf5#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kd3
        • 2.Qc2#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Sxg7
        • 2.Qe3#
      • 1...Sg3
        • 2.Qe3#
      • 1...Sd4
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Sd6
        • 2.Qe3#
      • 1...Sh6
        • 2.Qe3#
      • 1...Se7
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);CHECK,XS(c)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(C),XS(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XS(c)
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(C),XS(c)
      • K(a);N_GUARD,S_CUTS(b),S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR1(C),XS(c)
      • S(c);N_GUARD,XS(G)::QAR1(C)
      • S(c);N_GUARD::QAR1(C)
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