MESON Chess Problem Database

Problem Display
PID: 154189 (2N2nK1/p1N2QB1/r7/8/R1b1k1p1/8/3PP1P1/2rn4 w - - 0 1)

Daniel, Arthur William

Hampstead and Highgate Express, 1913

(First published on Sat Sep 6 1913)

2N2nK1/p1N2QB1/r7/8/R1b1k1p1/8/3PP1P1/2rn4

#2

9 + 8

14867 BCPS Library 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rxc4#
    • 1...Rb1
      • 2.Rxc4#
    • 1...Rxa4
      • 2.Sd6#
    • 1...Ra5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Sc3
      • 2.Rxc4#
    • 1...Se3
      • 2.d3#
  • Tries
    • 1.Sxa6?
      • threat
        • 2.Sc5#
        • 2.Sd6#
      • 1...Sd7
        • 2.Sd6#
      • 1...Se6!
    • 1.Qxc4+?
      • 1...Kf5
        • 2.Qxg4#
      • 1...Rxc4!
  • Keys
    • 1.g3!
      • threat
        • 2.Qd5#
      • 1...Rxa4
        • 2.Sd6#
      • 1...Ra5
        • 2.Sd6#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Re6
        • 2.Qf4#
      • 1...Sc3
        • 2.Rxc4#
      • 1...Se3
        • 2.d3#
      • 1...Se6
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::R(D),XB(c)
    • R(f);N_GUARD,N_SPINB(c),XR(D)::S(H)
    • R(f);N_GUARD::S(H)
    • R(f);N_GUARD::S(H),XR(f)
    • S(b);S_CUTR(a)::R(D),XB(c)
    • S(b);SBLOCK::P(A)
  • Tries
    • Try
      • S(E);XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::S(H)
      • Refutation
        • S(h);N_PINQ(F)
    • Try
      • Q(F);CHECK,N_SPINQ(F),XB(c)
      • Vars
        • K(d);OGATE,S_FLIGHT::QAB1(F),XP(e)
      • Refutation
        • R(a);P_SPINR(a),XQ(F)
  • Actual
    • P(C);
    • Threat
      • QAB1(F)
    • Vars
      • R(f);N_GUARD,N_SPINB(c),XR(D)::S(H)
      • R(f);N_GUARD::S(H)
      • R(f);N_GUARD::S(H),XR(f)
      • R(f);N_PINQ(F)::QAR1(F)
      • S(b);S_CUTR(a)::R(D),XB(c)
      • S(b);SBLOCK::P(A)
      • S(h);N_PINQ(F)::QAB(F)
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