MESON Chess Problem Database

Problem Display
PID: 4715 (8/8/4P1B1/6p1/1P1k1p2/N1N1R3/1n6/B4KQ1 w - - 0 1)

Laws, Benjamin Glover

2nd Prize Set, Melbourne Centenniel Chess Congress, 1888

8/8/4P1B1/6p1/1P1k1p2/N1N1R3/1n6/B4KQ1

#2

9 + 4

15 British Chess Magazine 1889
15 British Chess Magazine 1895
58 Tijdschrift vd NSB 1895
3571 An English Bohemian 1933

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Re4#
    • 1...Sa4
      • 2.Re1#
      • 2.Re2#
    • 1...Sc4
      • 2.Sc2#
      • 2.Sab5#
  • Tries
    • 1.Re4+?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxc3!
    • 1.Qf2?
      • 1...fxe3
        • 2.Qf6#
      • 1...Sd1
        • 2.Qd2#
      • 1...Sd3
        • 2.Re4#
      • 1...Sa4
        • 2.Re1#
        • 2.Re2#
        • 2.Qd2#
      • 1...Sc4
        • 2.Sc2#
        • 2.Sab5#
      • 1...g4
        • 2.Qxf4#
      • 1...f3!
    • 1.Qxg5?
      • threat
        • 2.Qxf4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...fxe3
        • 2.Se2#
        • 2.Scb5#
        • 2.Qf6#
        • 2.Qc5#
      • 1...f3
        • 2.Scb5#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sd3
        • 2.Rxd3#
        • 2.Re4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Qxf4#
        • 2.Qe5#
      • 1...Sc4
        • 2.Sc2#
        • 2.Rd3#
        • 2.Qxf4#
        • 2.Qc5#
      • 1...Kxe3!
  • Keys
    • 1.Qh2!
      • 1...Kxe3
        • 2.Qf2#
      • 1...fxe3
        • 2.Qh8#
      • 1...f3
        • 2.Qe5#
      • 1...Sd1
        • 2.Qd2#
      • 1...Sd3
        • 2.Re4#
      • 1...Sa4
        • 2.Qd2#
      • 1...Sc4
        • 2.Sc2#
      • 1...g4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::QAB(C)+R(F),DCHECK
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XS(E)
    • Try
      • Q(C);
      • Vars
        • P(c);OGATE,P_SPINP(c),SBLOCK,XR(F)::QAB(C)
        • S(a);N_GUARD::QAR2(C)
        • S(a);SBLOCK::QAB(C)+R(F),DCHECK
        • P(d);N_GUARD::QAR2(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(C);XP(d)
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XR(F)
  • Actual
    • Q(C);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(C)
      • P(c);SBLOCK,XR(F)::QAB(C)
      • P(c);OGATE::QAB1(C)
      • S(a);N_GUARD::QAR2(C)
      • S(a);SBLOCK::R1(F)
      • S(a);SBLOCK::S(D)
      • P(d);N_GUARD::QAR2(C),XP(c)
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