MESON Chess Problem Database

Problem Display
PID: 140840 (B7/rn5K/8/4Q3/p5pp/4B3/3P1RP1/5Nkq w - - 0 1)

Sparke, Arthur M

Good Companions, 1918

B7/rn5K/8/4Q3/p5pp/4B3/3P1RP1/5Nkq

#2

8 + 7

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qxh2#
    • 1...Sa5+
      • 2.Rf7#
    • 1...Sc5+
      • 2.Rf7#
    • 1...Sd6+
      • 2.Rf7#
    • 1...Sd8+
      • 2.Rf7#
  • Keys
    • 1.Sh2!
      • threat
        • 2.Re2#
      • 1...Sa5+
        • 2.Rf7#
      • 1...Sc5+
        • 2.Rf7#
      • 1...Sd6+
        • 2.Rf7#
      • 1...Sd8+
        • 2.Rf7#
      • 1...Qxg2
        • 2.Rf1#
      • 1...Qxh2
        • 2.Qa1#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::QAB1(F),XQ(b)
    • S(g);CHECK::B(E)+R(C)
  • Actual
    • S(A);
    • Threat
      • B(E)+R(C)
    • Vars
      • S(g);CHECK::B(E)+R(C)
      • Q(b);SBLOCK,XP(D)::B(E)+R(C),DCHECK
      • Q(b);SBLOCK,XS(A)::QAR(F)
      • P(d);N_GUARD::S(A)
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