MESON Chess Problem Database

Problem Display
PID: 225085 (8/QB6/4p3/3qPN1n/3B4/1p1n4/1Rb4p/3N1K1k w - - 0 1)

Lawton, Howard

Sunday Chronicle, 1945

(First published on Sun Feb 11 1945)

8/QB6/4p3/3qPN1n/3B4/1p1n4/1Rb4p/3N1K1k

#2

8 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2+
      • 2.Bxg2#
    • 1...Qf3+
      • 2.Bxf3#
    • 1...Qe4
      • 2.Bxe4#
    • 1...Qc6
      • 2.Bxc6#
    • 1...Qxb7
      • 2.Qxb7#
    • 1...Sc1
      • 2.Sf2#
    • 1...Se1
      • 2.Sf2#
    • 1...Sxb2
      • 2.Sf2#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sb4
      • 2.Sf2#
    • 1...Sdf4
      • 2.Sf2#
    • 1...Sc5
      • 2.Sf2#
    • 1...Sxe5
      • 2.Sf2#
    • 1...Sg3+
      • 2.Sxg3#
    • 1...Shf4
      • 2.Sg3#
    • 1...Sf6
      • 2.Sg3#
    • 1...Sg7
      • 2.Sg3#
    • 1...exf5
      • 2.Bxd5#
  • Keys
    • 1.Bg1!
      • 1...Qg2+
        • 2.Bxg2#
      • 1...Qf3+
        • 2.Bxf3#
      • 1...Sg3+
        • 2.Sxg3#
      • 1...hxg1Q+
        • 2.Qxg1#
      • 1...hxg1R+
        • 2.Qxg1#
      • 1...Qxb7
        • 2.Qxb7#
      • 1...Bxd1
        • 2.Rxh2#
      • 1...Sxb2
        • 2.Sf2#
      • 1...Sxe5
        • 2.Sf2#
      • 1...hxg1S
        • 2.Qxg1#
      • 1...hxg1B
        • 2.Qxg1#
      • 1...exf5
        • 2.Bxd5#
      • 1...Qe4
        • 2.Bxe4#
      • 1...Qc6
        • 2.Bxc6#
      • 1...Bb1
        • 2.Rxh2#
      • 1...Sc1
        • 2.Sf2#
      • 1...Se1
        • 2.Sf2#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sb4
        • 2.Sf2#
      • 1...Sdf4
        • 2.Sf2#
      • 1...Sc5
        • 2.Sf2#
      • 1...Shf4
        • 2.Sg3#
      • 1...Sf6
        • 2.Sg3#
      • 1...Sg7
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(f);CHECK,OGATE::B(H),XQ(f)
    • Q(f);OGATE::B(H),XQ(f)
    • Q(f);OGATEB::B(H),XQ(f)
    • Q(f);N_SPINQ(f),OGATE,XB(H)::QAB(G),XQ(f)
    • S(e);N_GUARD::S(A)
    • S(e);N_GUARD,XR(C)::S(A)
    • S(e);N_GUARD::S(A),XS(e)
    • S(e);N_GUARD,XP(E)::S(A)
    • S(g);CHECK,N_GUARD::S(F),XS(g)
    • S(g);N_GUARD::S(F)
    • P(h);N_GUARD,XS(F)::B(H),XQ(f)
  • Actual
    • B(D);
    • Vars
      • Q(f);CHECK,OGATE::B(H),XQ(f)
      • S(g);CHECK,N_GUARD::S(F),XS(g)
      • P(c);CHECK,OGATE,XB(D)::QAR1(G),XQ(c)
      • P(c);CHECK,OGATE,XB(D)::QAR1(G),XR(c)
      • Q(f);N_SPINQ(f),OGATE,XB(H)::QAB(G),XQ(f)
      • B(b);OGATE,XS(A)::R1(C),XP(c)
      • S(e);N_GUARD,XR(C)::S(A)
      • S(e);N_GUARD,XP(E)::S(A)
      • P(c);OGATE,XB(D)::QAR1(G),XS(c)
      • P(c);OGATE,XB(D)::QAR1(G),XB(c)
      • P(h);N_GUARD,XS(F)::B(H),XQ(f)
      • Q(f);OGATE::B(H),XQ(f)
      • Q(f);OGATEB::B(H),XQ(f)
      • B(b);OGATE::R1(C),XP(c)
      • S(e);N_GUARD::S(A)
      • S(e);N_GUARD::S(A),XS(e)
      • S(g);N_GUARD::S(F)
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