MESON Chess Problem Database

Problem Display
PID: 34558 (8/1pK5/8/2pk1p2/n3RP2/3n4/3PN3/7Q w - - 0 1)

af Geyersstam, Fredrik

British Chess Magazine, 1886

8/1pK5/8/2pk1p2/n3RP2/3n4/3PN3/7Q

#2

6 + 6

3645 96 Schackproblem 1908

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf4
      • 2.Sxf4#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb6
      • 2.Sc3#
    • 1...c4
      • 2.Re5#
  • Keys
    • 1.Qh8!
      • 1...Kxe4
        • 2.Qh1#
      • 1...Sxf4
        • 2.Qe5#
      • 1...fxe4
        • 2.Qg8#
      • 1...Se5
        • 2.Qxe5#
      • 1...c4
        • 2.Qd4#
      • 1...Sc1
        • 2.Qe5#
      • 1...Se1
        • 2.Qe5#
      • 1...Sdb2
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sb4
        • 2.Qe5#
      • 1...Sab2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...b5
        • 2.Qa8#
      • 1...b6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(a);XP(E)::S(C),XS(a)
    • S(b);N_GUARD::S(C)
    • S(b);N_GUARD::S(C),XS(b)
    • P(c);SBLOCK::QAB(A)+R(D),DCHECK
  • Actual
    • Q(A);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • S(a);N_GUARD,XP(E)::QAR1(A)
      • P(e);SBLOCK,XR(D)::QAB(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • P(c);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A)
      • S(b);N_GUARD::S(C)
      • S(b);N_GUARD::S(C),XS(b)
      • P(f);OGATEB::QAB(A)
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Developed and maintained by Brian Stephenson.
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