MESON Chess Problem Database

Problem Display
PID: 132161 (8/2B3Pq/8/rn2N1nr/pK2k3/3R4/5Q2/5b2 w - - 0 1)

Lawton, Howard

The Field, 1956

(First published on Thu Feb 16 1956)

8/2B3Pq/8/rn2N1nr/pK2k3/3R4/5Q2/5b2

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qe3#
    • 1...Sa3
      • 2.Rd4#
    • 1...Sc3
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sa7
      • 2.Rd4#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
    • 1...Se6
      • 2.Qf3#
    • 1...Sf7
      • 2.Qf3#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Sc5#
      • 1...Bxd3
        • 2.Sf6#
      • 1...Sxc7
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Qf5
        • 2.Qe3#
      • 1...Sa3
        • 2.Rd4#
      • 1...Sc3
        • 2.Rd4#
      • 1...Sd6
        • 2.Rd4#
      • 1...Sa7
        • 2.Rd4#
      • 1...Sh3
        • 2.Qf3#
      • 1...Se6
        • 2.Qf3#
      • 1...Sf7
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(h);SBLOCK::QAR1(A)
    • S(e);N_GUARD::R1(B)
    • S(e);N_GUARD::R1(B),XS(e)
    • S(f);N_GUARD::QAB1(A),XS(f)
    • S(f);N_GUARD::QAB1(A)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);S_FLIGHT,XR(B)::S(D)
      • B(a);SBLOCK,XR(B)::S(D)
      • S(e);N_GUARD,XB(E)::R1(B)
      • S(e);N_GUARD::R1(B),XS(e)
      • S(f);N_GUARD::QAB1(A),XS(f)
      • Q(h);SBLOCK::QAR1(A)
      • S(e);N_GUARD::R1(B)
      • S(f);N_GUARD::QAB1(A)
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