MESON Chess Problem Database

Problem Display
PID: 202677 (8/2p1B3/3q4/KBkp4/3p3Q/8/p7/r4Rb1 w - - 0 1)

Williams, Philip Hamilton

Western Daily Mercury, 1919

(First published on Fri Aug 29 1919)

8/2p1B3/3q4/KBkp4/3p3Q/8/p7/r4Rb1

#2

5 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7
      • 2.Qxe7#
    • 1...Rc1
      • 2.Rxc1#
    • 1...d3
      • 2.Qb4#
  • Tries
    • 1.Rxa1?
      • threat
        • 2.Rc1#
      • 1...Qxe7
        • 2.Qxe7#
      • 1...Be3!
    • 1.Qh7?
      • threat
        • 2.Qc2#
      • 1...Qxe7
        • 2.Qxe7#
      • 1...Rc1
        • 2.Rxc1#
      • 1...d3!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qc2#
      • 1...Qxe7
        • 2.Qxe7#
      • 1...dxe4
        • 2.Rf5#
      • 1...Rc1
        • 2.Rxc1#
      • 1...d3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_SPINQ(g),OGATE,XB(E)::QAB(B),XQ(g)
    • R(a);N_GUARD::R(A),XR(a)
    • P(d);OGATE::QAB1(B)
  • Tries
    • Try
      • R(A);XR(a)
      • Threat
        • R(A)
      • Vars
        • Q(g);N_SPINQ(g),OGATE,XB(E)::QAB(B),XQ(g)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • Q(g);N_SPINQ(g),OGATE,XB(E)::QAB(B),XQ(g)
        • R(a);N_GUARD::R(A),XR(a)
      • Refutation
        • P(d);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • Q(g);N_SPINQ(g),OGATE,XB(E)::QAB(B),XQ(g)
      • P(f);OGATEB,XQ(B)::R(A)
      • R(a);N_GUARD::R(A),XR(a)
      • P(d);OGATE::QAB1(B)
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