MESON Chess Problem Database

Problem Display
PID: 156405 (3Kb3/3n4/Np2Qp2/1r3r2/1p1kNp2/3n1P2/1p1PPR1b/1q4B1 w - - 0 1)

Packer, GFH

Illustrated Western Weekly News, 1913

(First published on Sat Dec 20 1913)

3Kb3/3n4/Np2Qp2/1r3r2/1p1kNp2/3n1P2/1p1PPR1b/1q4B1

#2

9 + 13

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rxh2#
    • 1...Se1
      • 2.Rxh2#
    • 1...Sxf2
      • 2.Bxf2#
  • Tries
    • 1.Rf1+?
      • 1...Sf2
        • 2.Bxf2#
      • 1...Bxg1!
    • 1.Rxh2+?
      • 1...Sf2
        • 2.Bxf2#
      • 1...Qxg1!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe4#
      • 1...Sxf2
        • 2.Bxf2#
      • 1...Rbe5
        • 2.Qc4#
      • 1...Rfe5
        • 2.Qc4#
      • 1...Sc1
        • 2.Rxh2#
      • 1...Se1
        • 2.Rxh2#
      • 1...S3c5
        • 2.Sxb5#
      • 1...S3e5
        • 2.Sxb5#
      • 1...S7c5
        • 2.Sxf5#
      • 1...S7e5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,S_CUTQ(a)::B(A)+R(D),XB(c)
    • S(d);OGATE,P_SPINS(d),XR(D)::B(A),XS(d)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::B(A),XS(d)
      • Refutation
        • B(c);XB(A)
    • Try
      • R(D);CHECK,XB(c)
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::B(A),XS(d)
      • Refutation
        • Q(a);XB(A)
  • Actual
    • S(F);
    • Threat
      • QAR1(H)
    • Vars
      • S(d);OGATE,P_SPINS(d),XR(D)::B(A),XS(d)
      • R(h);SBLOCK::QAR1(H)
      • R(i);SBLOCK::QAR1(H)
      • S(d);N_GUARD,S_CUTQ(a)::B(A)+R(D),XB(c)
      • S(d);S_CUTR(i)::S(F),XR(h)
      • S(l);S_CUTR(h)::S(F),XR(i)
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