MESON Chess Problem Database

Problem Display
PID: 153387 (7b/5B2/8/4p2n/4k1pB/3N4/4N3/K2QR3 w - - 0 1)

Sparke, Arthur M

Good Companions (January Meredith Ty.), 1916

7b/5B2/8/4p2n/4k1pB/3N4/4N3/K2QR3

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sef4#
  • Tries
    • 1.Sc3+?
      • 1...Kd4
        • 2.Sb5#
      • 1...Kf5!
    • 1.Sef4+?
      • 1...Kf5
        • 2.Be6#
        • 2.Bg6#
      • 1...Kd4!
    • 1.Sf2+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf5
        • 2.Qd7#
      • 1...Kf3!
    • 1.Sc5+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf5
        • 2.Qd7#
      • 1...Kf3!
    • 1.Bf2?
      • threat
        • 2.Sg3#
        • 2.Sd4#
      • 1...Kf3
        • 2.Sef4#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sf4
        • 2.Sg3#
      • 1...g3
        • 2.Sxg3#
        • 2.Sd4#
      • 1...Kf5!
  • Keys
    • 1.Sdf4!
      • threat
        • 2.Qd3#
      • 1...exf4+
        • 2.Sd4#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf3
        • 2.Qd3#
      • 1...Kf5
        • 2.Bg6#
      • 1...Sxf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(B)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB(B)+S(D)
        • S(d);::R(C)+S(D),DCHECK,XS(d)
        • S(d);::R(C)+S(D),DCHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAB1(B)
    • Vars
      • P(c);CHECK,SBLOCK,XS(E)::R(C)+S(D)
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAR2(B)
      • K(a);S_FLIGHT::B(G)
      • S(d);SBLOCK,XS(E)::R(C)+S(D),DCHECK
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