MESON Chess Problem Database

Problem Display
PID: 253350 (7K/6pp/6br/B5b1/P1P5/2RP4/p1Bk2PR/6QN w - - 0 1)

Sparke, Arthur M

Western Morning News, 1921

(First published on Sat Mar 19 1921)

7K/6pp/6br/B5b1/P1P5/2RP4/p1Bk2PR/6QN

#2

11 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Qf2#
    • 1...Rh3
      • 2.gxh3#
    • 1...Be3
      • 2.Qd1#
    • 1...Bh4
      • 2.g3#
    • 1...Bh5
      • 2.g4#
  • Tries
    • 1.Ra3+?
      • 1...Ke2
        • 2.Sg3#
        • 2.Bd1#
        • 2.Qf2#
        • 2.Qe1#
      • 1...Kxc2!
    • 1.Rb3+?
      • 1...Ke2
        • 2.Sg3#
        • 2.Bd1#
        • 2.Qf2#
        • 2.Qe1#
      • 1...Kxc2!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Qf2#
      • 1...Ke2
        • 2.Qf2#
      • 1...Bxd3
        • 2.Rc2#
      • 1...Be3
        • 2.Qd1#
      • 1...Bh4
        • 2.g3#
      • 1...Bh5
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);N_GUARD,P-FLIGHT::QAR1(A)
    • R(e);OGATE::R(E)+P(D),XR(e)
    • B(c);SBLOCK::QAR1(A)
    • B(c);S_CUTR(e)::R(E)+P(D)
    • B(d);S_CUTR(e)::R(E)+P(D)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • R(F);CHECK
      • Refutation
        • K(b);P-FLIGHT,XB(C)
  • Actual
    • B(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • B(d);SBLOCK,XP(G)::B(J)+R(F),DCHECK
      • B(c);SBLOCK::QAR1(A)
      • B(c);S_CUTR(e)::R(E)+P(D)
      • B(d);S_CUTR(e)::R(E)+P(D)
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