MESON Chess Problem Database

Problem Display
PID: 229659 (R7/2pkp3/3P4/1P1P1K2/1Q6/8/8/8 w - - 0 1)

Eddy, Edwin John

Southend Times, 1937

(First published on Wed Mar 31 1937)

R7/2pkp3/3P4/1P1P1K2/1Q6/8/8/8

#2

6 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.bxc5 ep#
      • 2.dxc5 ep#
    • 1...c6
      • 2.bxc6#
      • 2.dxc6#
    • 1...e5
      • 2.dxe5 ep#
    • 1...e6+
      • 2.dxe6#
  • Tries
    • 1.Qa3?
      • 1...e6+
        • 2.dxe6#
      • 1...cxd6
        • 2.Qa7#
      • 1...c5
        • 2.bxc5 ep#
        • 2.dxc5 ep#
      • 1...c6
        • 2.bxc6#
        • 2.dxc6#
      • 1...e5
        • 2.dxe5 ep#
      • 1...exd6!
    • 1.Qc5?
      • threat
        • 2.Qc6#
        • 2.Qxc7#
      • 1...e6+
        • 2.dxe6#
      • 1...cxd6
        • 2.Qa7#
        • 2.Qc6#
        • 2.Qc8#
      • 1...c6
        • 2.Qxc6#
        • 2.bxc6#
        • 2.dxc6#
      • 1...exd6!
  • Keys
    • 1.Qd4!
      • 1...e6+
        • 2.dxe6#
      • 1...Kxd6
        • 2.Rd8#
      • 1...cxd6
        • 2.Qa7#
      • 1...exd6
        • 2.Qg7#
      • 1...c5
        • 2.dxc5 ep#
      • 1...c6
        • 2.dxc6#
      • 1...e5
        • 2.dxe5 ep#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE::P(C),XP(c),EP
    • P(c);CHECK,OGATE::P(C),XP(c)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(c);CHECK,OGATE::P(C),XP(c)
        • P(a);OGATEB,SBLOCK,XP(E)::QAR(A)
        • P(c);OGATE::P(C),XP(c),EP
      • Refutation
        • P(c);XP(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);CHECK,OGATE::P(C),XP(c)
      • Refutation
        • P(c);XP(E)
  • Actual
    • Q(A);
    • Vars
      • P(c);CHECK,OGATE::P(C),XP(c)
      • K(b);P-FLIGHT,XP(E)::R(F)
      • P(a);OGATEB,SBLOCK,XP(E)::QAR(A)
      • P(c);OGATEB,SBLOCK,XP(E)::QAR(A)
      • P(a);OGATE::P(C),XP(a),EP
      • P(a);OGATE::P(C),XP(a)
      • P(c);OGATE::P(C),XP(c),EP
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