MESON Chess Problem Database

Problem Display
PID: 101037 (3R1Q2/2pp1b2/p1B1R2n/B7/8/4N1N1/K4kP1/6b1 w - - 0 1)

Keeble, John Frederick

Good Companions (October), 1916

3R1Q2/2pp1b2/p1B1R2n/B7/8/4N1N1/K4kP1/6b1

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Sxg4
        • 2.Be1#
      • 1...Kxg3!
    • 1.Sef5?
      • threat
        • 2.Be1#
        • 2.Qc5#
      • 1...Sxf5
        • 2.Be1#
      • 1...dxc6
        • 2.Rd2#
      • 1...dxe6
        • 2.Qc5#
      • 1...Bh2
        • 2.Qc5#
      • 1...d5
        • 2.Re2#
      • 1...Sg4
        • 2.Be1#
      • 1...d6
        • 2.Be1#
      • 1...Bxe6+!
  • Keys
    • 1.Sef1!
      • threat
        • 2.Be1#
        • 2.Qc5#
      • 1...dxc6
        • 2.Rd2#
      • 1...dxe6
        • 2.Qc5#
      • 1...Bh2
        • 2.Qc5#
      • 1...d5
        • 2.Re2#
      • 1...Sg4
        • 2.Be1#
      • 1...Sf5
        • 2.Be1#
      • 1...d6
        • 2.Be1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(d);XS(C)::B(E)
      • Refutation
        • K(b);N_SPINB(g),S_FLIGHT,XS(D)
    • Try
      • S(C);N_PINB(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XS(C)::B(E)
        • P(f);OGATE,XB(F)::R(H)
        • P(f);XR(G)::QAB(I)
        • B(a);::QAB(I)
        • P(f);N_PINR(G)::R1(G)
        • S(d);::B(E)
        • P(f);::B(E)
      • Refutation
        • B(g);CHECK,XR(G)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(f);OGATE,XB(F)::R(H)
      • P(f);XR(G)::QAB(I)
      • B(a);::QAB(I)
      • P(f);N_PINR(G)::R1(G)
      • S(d);::B(E)
      • S(d);N_SPINB(g)::B(E)
      • P(f);::B(E)
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