MESON Chess Problem Database

Problem Display
PID: 195270 (7Q/3N4/3p1B2/1Pbk1P1b/1RN3pp/8/rpP3KP/q4R1B w - - 0 1)

Packer, GFH

Western Daily Mercury, 1917

(First published on Fri Sep 14 1917)

7Q/3N4/3p1B2/1Pbk1P1b/1RN3pp/8/rpP3KP/q4R1B

#2

12 + 9

15351 SCPF/BCPS Black Books 2016
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1+
      • 2.Kxf1#
    • 1...Bg1
      • 2.Kxg1#
    • 1...Bf2
      • 2.Kxf2#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bb6
      • 2.Scxb6#
    • 1...Ba7
      • 2.Qa8#
    • 1...h3+
      • 2.Kg3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.c4#
      • 1...Qxf1+
        • 2.Kxf1#
      • 1...h3+
        • 2.Kg3#
      • 1...Qc1!
    • 1.Qg8+?
      • 1...Ke4
        • 2.Qe6#
      • 1...Bf7!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Sf6#
      • 1...Qxf1+
        • 2.Kxf1#
      • 1...h3+
        • 2.Kg3#
      • 1...Ke4
        • 2.Sf6#
      • 1...Bxb4
        • 2.Qd4#
      • 1...Bg1
        • 2.Kxg1#
      • 1...Bf2
        • 2.Kxf2#
      • 1...Be3
        • 2.Sxe3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bb6
        • 2.Scxb6#
      • 1...Ba7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,XR(A)::B(B)+K(D),XQ(a)
    • B(f);::B(B)+K(D),XB(f)
    • B(f);N_GUARD::S(G),XB(f)
    • B(f);S_CUTR(b)::QAB(L)
    • P(e);CHECK::B(B)+K(D)
  • Tries
    • Try
      • S(G);
      • Threat
        • P(C)
      • Vars
        • Q(a);CHECK,XR(A)::B(B)+K(D),XQ(a)
        • P(e);CHECK::B(B)+K(D)
      • Refutation
        • Q(a);
    • Try
      • Q(L);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR2(L)
      • Refutation
        • B(h);P_SPINB(h)
  • Actual
    • B(J);
    • Threat
      • S(K)
    • Vars
      • Q(a);CHECK,XR(A)::B(B)+K(D),XQ(a)
      • P(e);CHECK::B(B)+K(D)
      • K(g);S_FLIGHT::S(K)
      • B(f);N_GUARD,XR(F)::QAR1(L)
      • B(f);::B(B)+K(D),XB(f)
      • B(f);N_GUARD::S(G),XB(f)
      • B(f);N_GUARD::QAR1(L),XB(f)
      • B(f);S_CUTR(b)::QAB(L)
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