MESON Chess Problem Database

Problem Display
PID: 156507 (1B1R4/n2p1K2/1RpN1Q2/3k1p2/q5P1/4P3/1n1P4/1br5 w - - 0 1)

Packer, GFH

Illustrated London News, 1906

(First published on Fri Apr 20 1906)

1B1R4/n2p1K2/1RpN1Q2/3k1p2/q5P1/4P3/1n1P4/1br5

#2

9 + 9

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qd4#
    • 1...Qc2
      • 2.Qd4#
    • 1...Qb3
      • 2.Qd4#
    • 1...Qb5
      • 2.Qd4#
    • 1...Qa1
      • 2.Qd4#
    • 1...Qa2
      • 2.Qd4#
    • 1...Qa3
      • 2.Qd4#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qa5
      • 2.Qd4#
    • 1...Qa6
      • 2.Qd4#
    • 1...Rc2
      • 2.Qxf5#
    • 1...Ba2
      • 2.Qxf5#
    • 1...Sc4
      • 2.Qd4#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Qe4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qd4#
      • 1...Kxc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kc5
        • 2.Qd4#
      • 1...Qxc4
        • 2.Qe5#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Sb5
        • 2.Qxc6#
      • 1...c5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 13
  • Sets
    • Q(d);N_GUARD::QAR1(F)
    • Q(d);N_GUARD::QAR1(F),XQ(d)
    • R(b);S_CUTB(a)::QAR2(F),XP(f)
    • B(a);N_GUARD::QAR2(F),XP(f)
    • S(c);S_CUTQ(d)::QAR1(F)
  • Tries
    • Try
      • S(E);P_PINP(i)
      • Threat
        • QAB1(F)
      • Vars
        • K(e);N_SPINP(i),S_FLIGHT::QAR1(F)
        • K(e);N_SPINP(i),S_FLIGHT::QAB1(F),XP(f)
      • Refutation
        • Q(d);
  • Actual
    • S(E);P_PINP(i)
    • Threat
      • QAR1(F)
    • Vars
      • K(e);N_SPINP(i),S_FLIGHT,XS(E)::QAR1(F)
      • K(e);N_SPINP(i),S_FLIGHT::QAB1(F),XP(f)
      • K(e);N_SPINP(i),P-FLIGHT::QAB1(F)
      • Q(d);SBLOCK,XS(E)::QAR1(F)
      • R(b);SBLOCK,XS(E)::QAR1(F)
      • S(h);N_GUARD,S_CUTQ(d)::QAB1(F),XP(g)
      • P(g);SBLOCK::QAB1(F)
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