MESON Chess Problem Database

Problem Display
PID: 191259 (K2krR2/pRp5/r7/N2b4/1Q4B1/8/8/8 w - - 0 1)

Knott, Hubert Edward

Western Daily Mercury, 1916

(First published on Fri Sep 29 1916)

K2krR2/pRp5/r7/N2b4/1Q4B1/8/8/8

#2

6 + 6

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Rb8#
    • 1...Rxf8
      • 2.Qxf8#
    • 1...Ba2
      • 2.Rb8#
    • 1...Bb3
      • 2.Rb8#
    • 1...Bc4
      • 2.Rb8#
    • 1...Bxb7+
      • 2.Sxb7#
    • 1...Bf7
      • 2.Rb8#
    • 1...Bg8
      • 2.Rb8#
    • 1...c6
      • 2.Qd6#
      • 2.Qe7#
  • Tries
    • 1.Sc6+?
      • 1...Rxc6
        • 2.Rb8#
      • 1...Bxc6!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxc7#
      • 1...Bxb7+
        • 2.Sxb7#
      • 1...Rxf8
        • 2.Qxf8#
      • 1...Rc6
        • 2.Rb8#
      • 1...Bc6
        • 2.Qg5#
      • 1...c6
        • 2.Qd6#
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(b);N_PINR(D)::R(D)
    • R(f);N_SPINR(f),OGATE,XR(F)::QAR2(A),XR(f)
    • B(a);N_PINR(D)::R(D)
    • B(a);CHECK,XR(D)::S(C),XB(a)
  • Tries
    • Try
      • S(C);CHECK,N_SPINR(D)
      • Vars
        • R(b);XS(C)::R(D)
      • Refutation
        • B(a);P_PINR(D),XS(C)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(d)
    • Vars
      • B(a);CHECK,XR(D)::S(C),XB(a)
      • R(f);N_SPINR(f),OGATE,XR(F)::QAR2(A),XR(f)
      • R(b);N_PINR(D)::R(D)
      • B(a);OGATE::QAB(A)
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