MESON Chess Problem Database

Problem Display
PID: 136579 (2n4R/3QB2B/r3pp1N/5N1k/qR1n3P/6P1/6P1/b2b3K w - - 0 1)

Packer, GFH

The Field, 1919

(First published on Sat Mar 29 1919)

2n4R/3QB2B/r3pp1N/5N1k/qR1n3P/6P1/6P1/b2b3K

#2

11 + 9

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Qe8#
    • 1...Qb3
      • 2.Qe8#
    • 1...Qa2
      • 2.Qe8#
    • 1...Qa3
      • 2.Qe8#
    • 1...Qxb4
      • 2.Qe8#
    • 1...Qa5
      • 2.Qe8#
    • 1...Rc6
      • 2.Qe8#
    • 1...Bc2
      • 2.g4#
    • 1...Bb3
      • 2.g4#
    • 1...Sc2
      • 2.Qxd1#
    • 1...Se2
      • 2.g4#
    • 1...Sb3
      • 2.Qxd1#
    • 1...Sf3
      • 2.g4#
    • 1...Sb5
      • 2.Qe8#
    • 1...Sc6
      • 2.Qe8#
  • Keys
    • 1.Sg8!
      • threat
        • 2.Sxf6#
      • 1...Kg4
        • 2.Sxf6#
      • 1...Sxf5
        • 2.Bxf5#
      • 1...exf5
        • 2.Bxf5#
      • 1...Sc2
        • 2.Sg7#
        • 2.Qxd1#
      • 1...Se2
        • 2.Sg7#
        • 2.g4#
      • 1...Sb3
        • 2.Sg7#
        • 2.Qxd1#
      • 1...Sf3
        • 2.Sg7#
        • 2.g4#
      • 1...Sb5
        • 2.Sg7#
        • 2.Qe8#
      • 1...Sc6
        • 2.Sg7#
        • 2.Qe8#
      • 1...e5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 15
  • Sets
    • Q(c);N_GUARD::QAB(H)
    • Q(c);N_GUARD,XR(D)::QAB(H)
    • Q(c);N_GUARD,SBLOCK::QAB(H)
    • R(f);S_CUTQ(c)::QAB(H)
    • B(b);N_GUARD::P(C)
    • S(d);OGATE::QAB(H),XB(b)
    • S(d);S_CUTB(b)::P(C)
    • S(d);S_CUTQ(c)::QAB(H)
  • Actual
    • S(G);
    • Threat
      • S(G),XP(h)
    • Vars
      • K(e);P_SPINS(d),S_FLIGHT::S(G),XP(h)
      • S(d);OGATE,XS(F)::R(K)+B(J),XS(d)
      • P(g);OGATE,XS(F)::R(K)+B(J),XP(g)
      • P(g);::S(F)
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