MESON Chess Problem Database

Problem Display
PID: 156501 (8/1N2N3/3R2p1/2p1k1rb/5pn1/2Kn1P2/7B/6Q1 w - - 0 1)

Packer, GFH

Stratford Express, 1938

(First published on Sat Jun 18 1938)

8/1N2N3/3R2p1/2p1k1rb/5pn1/2Kn1P2/7B/6Q1

#2

7 + 8

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sc6#
    • 1...Sc1
      • 2.Qxc5#
    • 1...Se1
      • 2.Qxc5#
    • 1...Sb2
      • 2.Qxc5#
    • 1...Sf2
      • 2.Qxg5#
    • 1...Sxh2
      • 2.Qxg5#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sf6
      • 2.Qxg5#
    • 1...Sh6
      • 2.Qe3#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Kc4?
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxh2
        • 2.Qxg5#
      • 1...Rf5
        • 2.Sc6#
      • 1...Sc1
        • 2.Qxc5#
      • 1...Se1
        • 2.Qxc5#
      • 1...Sdf2
        • 2.Qa1#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sgf2
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Sh6
        • 2.Qe3#
      • 1...Sb2+!
    • 1.Sxc5?
      • threat
        • 2.Re6#
        • 2.Qd4#
      • 1...Sxc5
        • 2.Qd4#
        • 2.Qxc5#
      • 1...Sdf2
        • 2.Re6#
      • 1...Sgf2
        • 2.Re6#
      • 1...Se3
        • 2.Re6#
      • 1...Kxd6!
    • 1.Sd8?
      • threat
        • 2.Sf7#
        • 2.Re6#
      • 1...Rf5
        • 2.Re6#
      • 1...Sh6
        • 2.Re6#
      • 1...Kxd6!
    • 1.Qe1+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sxe1!
  • Keys
    • 1.Kd2!
      • 1...Sxh2
        • 2.Qxg5#
      • 1...Rf5
        • 2.Sc6#
      • 1...Sc1
        • 2.Qxc5#
      • 1...Se1
        • 2.Qxc5#
      • 1...Sb2
        • 2.Qxc5#
      • 1...Sdf2
        • 2.Qa1#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sgf2
        • 2.Qxg5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Sh6
        • 2.Qe3#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::S(G)
    • S(a);N_GUARD::QAR2(A),XP(d)
    • S(c);OGATE::QAR2(A),XR(f)
    • S(c);N_SPINP(b),OGATE,XB(B)::QAR2(A),XR(f)
    • S(c);N_GUARD::QAR2(A),XS(c)
    • S(c);N_GUARD::QAR2(A)
    • P(d);N_GUARD::QAB1(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(c);CHECK,N_GUARD::QAR2(A),XS(c)
        • S(c);N_SPINP(b),OGATE,XB(B)::QAR2(A),XR(f)
        • R(f);SBLOCK::S(G)
        • S(a);N_GUARD::QAR2(A),XP(d)
        • S(a);N_GUARD::QAB(A)
        • S(c);OGATE::QAR2(A),XR(f)
        • S(c);N_GUARD::QAR2(A)
      • Refutation
        • S(a);CHECK
    • Try
      • S(F);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R1(E)
        • S(c);::R1(E)
      • Refutation
        • K(e);S_FLIGHT,XR(E)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);::R1(E)
        • S(c);::R1(E)
      • Refutation
        • K(e);S_FLIGHT,XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(A),XS(c)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • S(c);N_SPINP(b),OGATE,XB(B)::QAR2(A),XR(f)
      • R(f);SBLOCK::S(G)
      • S(a);N_GUARD::QAR2(A),XP(d)
      • S(a);N_GUARD::QAB(A)
      • S(c);OGATE::QAR2(A),XR(f)
      • S(c);N_GUARD::QAR2(A),XS(c)
      • S(c);N_GUARD::QAR2(A)
      • P(d);N_GUARD::QAB1(A)
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