MESON Chess Problem Database

Problem Display
PID: 60982 (K4n2/6pq/5prb/2B4b/P3Q3/1NN3p1/Bk3PR1/8 w - - 0 1)

Sparke, Arthur M

3rd HM., Good Companions (December), 1916

K4n2/6pq/5prb/2B4b/P3Q3/1NN3p1/Bk3PR1/8

#2

9 + 9

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1+?
      • 1...Kxa2
        • 2.Qc2#
      • 1...Bxd1!
    • 1.Sb5?
      • threat
        • 2.Qb1#
      • 1...Kxa2
        • 2.Qc2#
      • 1...Rg4
        • 2.f4#
      • 1...Rg5
        • 2.f3#
      • 1...Bf3!
    • 1.Bb4?
      • threat
        • 2.Qb1#
      • 1...Rg4
        • 2.f4#
      • 1...Rg5
        • 2.f3#
      • 1...Bf3!
    • 1.f3+?
      • 1...Kxc3
        • 2.Bb4#
        • 2.Rc2#
        • 2.Qc2#
        • 2.Qd4#
      • 1...Bd2!
    • 1.f4+?
      • 1...Kxc3
        • 2.Bb4#
        • 2.Rc2#
        • 2.Qc2#
        • 2.Qd4#
      • 1...Be2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qb1#
      • 1...Kxa2
        • 2.Qc2#
      • 1...Rg4
        • 2.f4#
      • 1...Rg5
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(A)::QAR2(G)
      • Refutation
        • B(c);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);P-FLIGHT,XB(A)::QAR2(G)
        • R(e);S_CUTB(c)::R(C)+P(B)
        • R(e);S_CUTB(f)::R(C)+P(B)
      • Refutation
        • B(c);P_PINQ(G)
    • Try
      • B(H);
      • Threat
        • QAR1(G)
      • Vars
        • R(e);S_CUTB(c)::R(C)+P(B)
        • R(e);S_CUTB(f)::R(C)+P(B)
      • Refutation
        • B(c);P_PINQ(G)
    • Try
      • P(B);CHECK
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • P(B);CHECK
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • K(a);P-FLIGHT,XB(A)::QAR2(G)
      • R(e);S_CUTB(c)::R(C)+P(B)
      • R(e);S_CUTB(f)::R(C)+P(B)
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