MESON Chess Problem Database

Problem Display
PID: 153847 (bb4R1/r1p5/nPp5/1P3N2/N1kpB3/KR6/P1p3Q1/2rq4 w - - 0 1)

Alexander, Frederick Forrest Lawrie

Falkirk Herald, 1939

(First published on Tue Aug 22 1939)

bb4R1/r1p5/nPp5/1P3N2/N1kpB3/KR6/P1p3Q1/2rq4

#2

10 + 11

15373 FFLA Scrapbook 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Bd3#
    • 1...Qh5
      • 2.Bd3#
    • 1...Qe1
      • 2.Bd3#
    • 1...Qg1
      • 2.Bd3#
    • 1...Qh1
      • 2.Bd3#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Sb4
      • 2.Rxb4#
    • 1...Sc5
      • 2.Rb4#
    • 1...c5
      • 2.Sb2#
  • Tries
    • 1.Rxb8?
      • threat
        • 2.Qg8#
      • 1...cxb6
        • 2.Sd6#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Qg4
        • 2.Bd3#
      • 1...Qh5
        • 2.Bd3#
      • 1...Qg1
        • 2.Bd3#
      • 1...Sc5
        • 2.Rb4#
      • 1...c5
        • 2.Sb2#
      • 1...cxb5!
    • 1.Qg6?
      • threat
        • 2.Qf7#
        • 2.Qe6#
      • 1...cxb6
        • 2.Qe6#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Qh5
        • 2.Qe6#
      • 1...Sc5
        • 2.Rb4#
      • 1...c5
        • 2.Sb2#
      • 1...cxb5!
  • Keys
    • 1.Rc8!
      • threat
        • 2.Qg8#
      • 1...cxb5
        • 2.Sd6#
      • 1...cxb6
        • 2.Bd5#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Qg4
        • 2.Bd3#
      • 1...Qh5
        • 2.Bd3#
      • 1...Qg1
        • 2.Bd3#
      • 1...Sc5
        • 2.Rb4#
      • 1...c5
        • 2.Sb2#

There are these versions: 153848

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::B(F)
    • Q(b);N_GUARD,P_PINR(D)::B(F),XQ(b)
    • S(f);N_GUARD,P_PINS(E)::R1(D),XS(f)
    • S(f);N_GUARD,P_PINS(E)::R1(D)
    • P(g);SBLOCK::S(E)
  • Tries
    • Try
      • R(J);XB(k)
      • Threat
        • QAB(B)
      • Vars
        • P(i);N_GUARD,XP(I)::S(H)
        • S(f);N_GUARD,P_PINS(E)::R1(D),XS(f)
        • Q(b);N_GUARD::B(F)
        • S(f);N_GUARD,P_PINS(E)::R1(D)
        • P(g);SBLOCK::S(E)
      • Refutation
        • P(g);XP(G)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(i);XP(I)::QAB(B)
        • S(f);N_GUARD,P_PINS(E)::R1(D),XS(f)
        • Q(b);::QAB(B)
        • S(f);N_GUARD,P_PINS(E)::R1(D)
        • P(g);SBLOCK::S(E)
      • Refutation
        • P(g);XP(G)
  • Actual
    • R(J);
    • Threat
      • QAB(B)
    • Vars
      • P(g);P_SPINP(i),XP(G)::S(H)
      • P(i);P_SPINP(g),XP(I)::B(F)
      • S(f);N_GUARD,P_PINS(E)::R1(D),XS(f)
      • Q(b);N_GUARD::B(F)
      • S(f);N_GUARD,P_PINS(E)::R1(D)
      • P(g);SBLOCK::S(E)
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