MESON Chess Problem Database

Problem Display
PID: 142374 (4B3/N2nQ3/prPn4/3k4/R2B1pb1/1P6/2N4b/K1R5 w - - 0 1)

Lane, Henry Fitzgerald William

Evening News, 1942

(First published on Wed Nov 25 1942)

4B3/N2nQ3/prPn4/3k4/R2B1pb1/1P6/2N4b/K1R5

#2

10 + 8

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.bxc4#
    • 1...Sf5
      • 2.Bf7#
    • 1...Sc5
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Bxd7?
      • threat
        • 2.Qe5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sc4
        • 2.bxc4#
      • 1...f3
        • 2.Se3#
      • 1...Sf7!
    • 1.Bf7+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Sxf7!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Se3#
      • 1...Rxc6
        • 2.Sb4#
      • 1...Sxe8
        • 2.Rd4#
      • 1...Sxc5
        • 2.Rd4#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Sc4
        • 2.bxc4#
      • 1...Se4
        • 2.Rd4#
      • 1...Sb5
        • 2.Sb4#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sb7
        • 2.Rd4#
      • 1...Sf7
        • 2.Rd4#
      • 1...Sc8
        • 2.Rd4#
      • 1...f3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • S(g);OGATE::P(D),XS(g)
    • S(g);N_GUARD,S_CUTB(c)::B(J)
    • S(h);N_GUARD::QAR1(I)
    • S(h);N_GUARD::QAR1(I),XS(h)
    • P(b);N_GUARD::S(C)
  • Tries
    • Try
      • B(J);XS(h)
      • Threat
        • QAR1(I)
      • Vars
        • B(c);N_GUARD::QAB1(I),XB(c)
        • S(g);OGATE::P(D),XS(g)
        • P(b);N_GUARD::S(C)
      • Refutation
        • S(g);
    • Try
      • B(J);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(I),XB(c)
      • Refutation
        • S(g);XB(J)
  • Actual
    • B(F);
    • Threat
      • QAR1(I),XS(g)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(g),XB(F)::R(B)+S(C)
      • R(f);N_GUARD,XP(G)::S(C)
      • S(g);XB(J)::R1(E)
      • S(h);SBLOCK,XB(F)::R1(E)
      • R(f);N_GUARD::S(C),XR(f)
      • S(g);OGATE::P(D),XS(g)
      • S(g);::R1(E)
      • S(g);S_CUTR(f)::S(C)
      • S(g);N_GUARD,S_CUTB(c)::B(J)
      • P(b);N_GUARD::S(C)
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