MESON Chess Problem Database

Problem Display
PID: 149004 (1R6/6p1/N3B1qp/K5p1/8/p1P2R1n/1Pk3rr/4Q3 w - - 0 1)

Sparke, Arthur M

Comm., Good Companions (May), 1918

1R6/6p1/N3B1qp/K5p1/8/p1P2R1n/1Pk3rr/4Q3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5+
      • 2.Bxf5#
    • 1...Qh5
      • 2.Bf5#
    • 1...axb2
      • 2.Sb4#
      • 2.Bb3#
  • Tries
    • 1.Qe2+?
      • 1...Kb1
        • 2.Rf1#
        • 2.Qd1#
      • 1...Kc1
        • 2.Rf1#
      • 1...Rxe2!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Qd1#
      • 1...Qf5+
        • 2.Bxf5#
      • 1...Kd3
        • 2.Sb4#
      • 1...axb2
        • 2.Sb4#
      • 1...Qd3
        • 2.Qc1#
      • 1...Qh5
        • 2.Bf5#
      • 1...Rd2
        • 2.Qb1#
      • 1...Sf2
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(g);CHECK,N_GUARD::B(G),XQ(g)
    • Q(g);N_GUARD::B(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • R(D);
    • Threat
      • QAB1(A)
    • Vars
      • Q(g);CHECK,N_GUARD::B(G),XQ(g)
      • K(a);S_FLIGHT::S(F)
      • P(d);SBLOCK,XP(B)::S(F)
      • Q(g);SBLOCK::QAR1(A)
      • Q(g);N_GUARD::B(G)
      • R(b);SBLOCK::QAB1(A)
      • S(e);S_CUTR(b)::QAR2(A)
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