MESON Chess Problem Database

Problem Display
PID: 51310 (K1b1R2q/1prn4/1pn1p3/R2B4/5pN1/8/4N1P1/b6k w - - 0 1)

Lipton, Michael

Manchester Guardian, 1957

(First published on Thu Feb 14 1957)

K1b1R2q/1prn4/1pn1p3/R2B4/5pN1/8/4N1P1/b6k

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Sf2#
    • 1...Qh3
      • 2.Rxa1#
    • 1...Qh5
      • 2.Rxa1#
    • 1...Qh6
      • 2.Rxa1#
    • 1...Qxe8
      • 2.Rxa1#
    • 1...Qf8
      • 2.Rxa1#
    • 1...Qg8
      • 2.Rxa1#
    • 1...Sd4
      • 2.Rxh8#
    • 1...Sce5
      • 2.Rxh8#
    • 1...Sde5
      • 2.Rxa1#
    • 1...Sf6
      • 2.Rxa1#
    • 1...e5
      • 2.Rxa1#
      • 2.Rxh8#
  • Tries
    • 1.g3+?
      • 1...f3
        • 2.Bxf3#
      • 1...exd5!
  • Keys
    • 1.Bf3!
      • threat
        • 2.g3#
      • 1...Qc3
        • 2.Rh5#
      • 1...Qh2
        • 2.Sf2#
      • 1...Qh3
        • 2.Rxa1#
        • 2.gxh3#
      • 1...Sd4
        • 2.Rxh8#
      • 1...Sce5
        • 2.Rxh8#
      • 1...Sde5
        • 2.Rxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(k);SBLOCK::S(C)
    • Q(k);N_GUARD::R(D),XB(a)
    • Q(k);N_GUARD,XR(G)::R(D),XB(a)
    • S(e);S_CUTB(a)::R(G),XQ(k)
    • S(i);S_CUTQ(k)::R(D),XB(a)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • P(c);P_SPINP(c)::B(E),XP(c)
      • Refutation
        • P(f);XB(E)
  • Actual
    • B(E);
    • Threat
      • B(E)+P(B)
    • Vars
      • Q(k);N_GUARD::R(D)
      • Q(k);SBLOCK::S(C)
      • S(e);S_CUTB(a)::R(G),XQ(k)
      • S(i);S_CUTQ(k)::R(D),XB(a)
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