MESON Chess Problem Database

Problem Display
PID: 62859 (2b5/1n6/8/6pp/Q5Pk/8/3N2Kn/8 w - - 0 1)

Laws, Benjamin Glover

The Chess Monthly (Hoffer), 1880

2b5/1n6/8/6pp/Q5Pk/8/3N2Kn/8

#2

4 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Sf3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sxg4
      • 2.Sf3#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qg3#
      • 1...hxg4
        • 2.Qxh2#
      • 1...Sf1
        • 2.Sf3#
      • 1...gxf4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxh5#
      • 1...Kxg4
        • 2.Qe4#
      • 1...Bxg4
        • 2.Qe1#
      • 1...Sxg4
        • 2.Sf3#
      • 1...hxg4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,P_SPINS(a),XP(D)::S(A)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(d);P_SPINP(d),SBLOCK,XP(D)::QAR2(C),XS(a)
        • S(a);N_GUARD::S(A)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(d)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(D)::QAR2(C)
      • B(f);SBLOCK,XP(D)::QAB(C)
      • S(a);N_GUARD,SBLOCK,XP(D)::S(A)
      • P(d);OGATEB,SBLOCK,XP(D)::QAR(C)
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