MESON Chess Problem Database

Problem Display
PID: 229370 (8/2RK4/8/3p3p/p2k3r/3N2pp/6n1/2BQ3B w - - 0 1)

Eddy, Edwin John

Sunday Chronicle, 1947

(First published on Sun Oct 19 1947)

8/2RK4/8/3p3p/p2k3r/3N2pp/6n1/2BQ3B

#2

6 + 8

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Bb2#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Sf2#
      • 1...Se1
        • 2.Sxe1#
      • 1...Se3
        • 2.Bb2#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Ke4!
    • 1.Sb4+?
      • 1...Ke4
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Qf3?
      • threat
        • 2.Bb2#
      • 1...Se3
        • 2.Qxe3#
      • 1...a3!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Sf2#
      • 1...Re4+
        • 2.Se5#
      • 1...Sf4+
        • 2.Sxf4#
      • 1...Ke4
        • 2.Sc5#
      • 1...Se1
        • 2.Sxe1#
      • 1...Se3
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::B(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAR(B)+S(D)
      • Vars
        • S(a);::QAR(B)+S(D),XS(a)
        • S(a);SBLOCK::B(A)
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(a)
    • Try
      • S(D);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINS(a)::QAB1(B),XP(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINS(a)::QAB1(B),XP(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • B(A)
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
      • Refutation
        • P(d);
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR(B)+S(D)
    • Vars
      • R(f);CHECK,SBLOCK::QAR(B)+S(D)
      • S(a);CHECK::QAR(B)+S(D),XS(a)
      • K(e);P-FLIGHT,P_SPINS(a)::S(D)
      • S(a);::QAR(B)+S(D),XS(a)
      • S(a);SBLOCK::B(A)
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