MESON Chess Problem Database

Problem Display
PID: 151186 (8/Q1p5/2P2R2/3pkpP1/1Np3B1/2pP4/2n2P1K/8 w - - 0 1)

Clark, WA

Hampstead and Highgate Express, 1896

(First published on Sat Sep 26 1896)

8/Q1p5/2P2R2/3pkpP1/1Np3B1/2pP4/2n2P1K/8

#2

9 + 7

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxb4
      • 2.Qe3#
    • 1...Sd4
      • 2.Qxc7#
    • 1...d4
      • 2.Qxc7#
    • 1...f4
      • 2.Re6#
  • Tries
    • 1.Sxc2?
      • threat
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qxc7#
      • 1...cxd3
        • 2.Qe3#
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...f4
        • 2.Re6#
        • 2.Qd4#
        • 2.Qxc7#
      • 1...Kf4!
    • 1.Bh3?
      • 1...Kf4
        • 2.Rxf5#
      • 1...Sxb4
        • 2.Qe3#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sd4
        • 2.Qxc7#
      • 1...d4
        • 2.Qxc7#
      • 1...f4
        • 2.Re6#
      • 1...cxd3!
    • 1.Bxf5?
      • 1...Sxb4
        • 2.Qe3#
      • 1...cxd3
        • 2.Sxd3#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sd4
        • 2.Qxc7#
      • 1...d4
        • 2.Qxc7#
      • 1...Kf4!
  • Keys
    • 1.f3!
      • 1...Kf4
        • 2.Rxf5#
      • 1...Sxb4
        • 2.Qe3#
      • 1...cxd3
        • 2.Sxd3#
      • 1...fxg4
        • 2.f4#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sd4
        • 2.Qxc7#
      • 1...d4
        • 2.Qxc7#
      • 1...f4
        • 2.Re6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR2(I)
    • S(a);N_GUARD::QAR2(I),XS(a)
    • S(a);N_GUARD,XS(D)::QAR2(I)
    • S(a);SBLOCK::QAB(I),XP(g)
    • P(d);SBLOCK::QAB(I),XP(g)
    • P(f);SBLOCK::R1(H)
  • Tries
    • Try
      • S(D);XS(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(d);::QAB1(I),XP(d)
      • Refutation
        • K(e);P_SPINP(f),S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(e);P_SPINP(f),S_FLIGHT::R1(H),XP(f)
        • S(a);N_GUARD,XS(D)::QAR2(I)
        • S(a);N_GUARD::QAR2(I)
        • S(a);N_GUARD::QAR2(I),XS(a)
        • S(a);SBLOCK::QAB(I),XP(g)
        • P(d);SBLOCK::QAB(I),XP(g)
        • P(f);SBLOCK::R1(H)
      • Refutation
        • P(c);XP(C)
    • Try
      • B(E);XP(f)
      • Vars
        • S(a);N_GUARD,XS(D)::QAR2(I)
        • P(c);XP(C)::S(D),XP(c)
        • S(a);N_GUARD::QAR2(I)
        • S(a);N_GUARD::QAR2(I),XS(a)
        • S(a);SBLOCK::QAB(I),XP(g)
        • P(d);SBLOCK::QAB(I),XP(g)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • P(A);
    • Vars
      • K(e);P_SPINP(f),S_FLIGHT::R1(H),XP(f)
      • S(a);N_GUARD,XS(D)::QAR2(I)
      • P(c);XP(C)::S(D),XP(c)
      • P(f);XB(E)::P(A)
      • S(a);N_GUARD::QAR2(I)
      • S(a);N_GUARD::QAR2(I),XS(a)
      • S(a);SBLOCK::QAB(I),XP(g)
      • P(d);SBLOCK::QAB(I),XP(g)
      • P(f);SBLOCK::R1(H)
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