MESON Chess Problem Database

Problem Display
PID: 198389 (B1N4K/1R6/2k3p1/2P1P3/8/b1nPp3/7Q/q1R5 w - - 0 1)

Sparke, Arthur M

Brisbane Courier, 1920

B1N4K/1R6/2k3p1/2P1P3/8/b1nPp3/7Q/q1R5

#2

9 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Se7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Sd1
      • 2.Se7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Sa2
      • 2.Se7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Se2
      • 2.Se7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Sa4
      • 2.Se7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Se4
      • 2.Se7#
    • 1...Sb5
      • 2.Se7#
      • 2.Ra7#
      • 2.Re7#
      • 2.Rf7#
      • 2.Rg7#
      • 2.Rh7#
      • 2.Qh1#
      • 2.Qg2#
    • 1...Sd5
      • 2.Sa7#
  • Tries
    • 1.Qh1+?
      • 1...Se4
        • 2.Se7#
        • 2.Qxe4#
      • 1...Sd5
        • 2.Sa7#
        • 2.Se7#
      • 1...Kxc5!
    • 1.Qg2+?
      • 1...Se4
        • 2.Se7#
        • 2.Qxe4#
      • 1...Sd5
        • 2.Sa7#
        • 2.Se7#
      • 1...Kxc5!
  • Keys
    • 1.e6!
      • threat
        • 2.Qd6#
      • 1...Sb1+
        • 2.Rb2#
      • 1...Sd1+
        • 2.Rb2#
      • 1...Sa2+
        • 2.Rb2#
      • 1...Se2+
        • 2.Rb2#
      • 1...Sa4+
        • 2.Rb2#
      • 1...Se4+
        • 2.Rb2#
      • 1...Sb5+
        • 2.Rg7#
      • 1...Sd5+
        • 2.Rb2#
      • 1...Kxc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Bxc5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(c);P_PINP(E)::S(H)
    • S(c);P_PINP(E),SBLOCK::S(H)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(c),XP(D)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(c),XP(D)
  • Actual
    • P(E);
    • Threat
      • QAR1(B)
    • Vars
      • S(c);CHECK::B(G)+R(F)
      • S(c);CHECK,SBLOCK::B(G)+R(F)
      • K(e);P-FLIGHT,P_SPINS(c),XP(D)::QAB1(B)
      • K(e);S_FLIGHT::QAR1(B)
      • B(b);SBLOCK,XP(D)::B(G)+R(F),DCHECK
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