MESON Chess Problem Database

Problem Display
PID: 145143 (8/8/3p2N1/3P1p2/3PkP2/3p1N2/3Q2B1/2K5 w - - 0 1)

Keeble, John Frederick

Daily Telegraph, 1923

(First published on Sat Dec 29 1923)

8/8/3p2N1/3P1p2/3PkP2/3p1N2/3Q2B1/2K5

#2

8 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3+?
      • 1...Kxd5
        • 2.Sd2#
      • 1...Kxe3!
    • 1.Qb4?
      • 1...Ke3
        • 2.Qe1#
      • 1...Kxd5
        • 2.Sg5#
      • 1...d2+!
    • 1.Qa5?
      • 1...Ke3
        • 2.Qe1#
      • 1...d2+!
    • 1.Qxd3+?
      • 1...Kxd5
        • 2.Sg5#
      • 1...Kxd3!
  • Keys
    • 1.Qc3!
      • 1...d2+
        • 2.Sxd2#
      • 1...Ke3
        • 2.Qe1#
      • 1...Kxd5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(G)::B(C)+S(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • K(b);S_FLIGHT,XP(G)::B(C)+S(D)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(B);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT,XP(G)::B(C)+S(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • P(a);CHECK::B(C)+S(D),DCHECK,XP(a)
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B)
      • K(b);S_FLIGHT,XP(G)::B(C)+S(D)
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