MESON Chess Problem Database

Problem Display
PID: 66285 (8/8/5pQ1/3R2N1/N1k1P3/K5p1/1n2n1P1/8 w - - 0 1)

Ahlbom, [Adolf] Leonard

British Chess Magazine, 1889

8/8/5pQ1/3R2N1/N1k1P3/K5p1/1n2n1P1/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sxb2#
      • 2.Sb6#
    • 1...fxg5
      • 2.Qa6#
      • 2.Qc6#
    • 1...f5
      • 2.Qa6#
      • 2.Qc6#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Sxb2#
        • 2.Sb6#
        • 2.Qa6#
        • 2.Qc6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sd1
        • 2.Sb6#
        • 2.Qa6#
        • 2.Qc6#
      • 1...Sd3
        • 2.Sb6#
        • 2.Qa6#
      • 1...Sc3
        • 2.Sxb2#
        • 2.Sb6#
        • 2.Qxc3#
        • 2.Qd4#
        • 2.Qc6#
      • 1...Sxa4!
  • Keys
    • 1.e5!
      • 1...Kxd5
        • 2.Qe4#
      • 1...Sxa4
        • 2.Qd3#
      • 1...fxe5
        • 2.Qc6#
      • 1...fxg5
        • 2.Qc6#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc1
        • 2.Qe4#
      • 1...Sg1
        • 2.Qe4#
      • 1...Sc3
        • 2.Sb6#
      • 1...Sd4
        • 2.Rc5#
      • 1...Sf4
        • 2.Qe4#
      • 1...f5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);XP(e)
      • Threat
        • DUALS(4)
      • Vars
        • S(b);N_GUARD::QAR1(G),XS(b)
      • Refutation
        • S(a);XS(C)
  • Actual
    • P(D);
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB1(G)
      • S(a);N_GUARD,XS(C)::QAB1(G)
      • P(e);OGATE,XP(D)::QAR2(G)
      • P(e);OGATE,XS(F)::QAR2(G)
      • S(a);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(b);N_GUARD::QAR2(G)
      • S(b);SBLOCK::S(C)
      • S(b);SBLOCK::R1(E)
      • P(e);OGATE::QAR2(G)
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