MESON Chess Problem Database

Problem Display
PID: 274374 (8/8/3N4/n7/4p3/4k1nN/8/3QK3 w - - 0 1)

Petkovic, Miodrag

Mat, 1973

8/8/3N4/n7/4p3/4k1nN/8/3QK3

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Sf5#
    • 1...Sh1
      • 2.Sf5#
    • 1...Sf5
      • 2.Sxf5#
    • 1...Sh5
      • 2.Sf5#
    • 1...Sb3
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sc6
      • 2.Sc4#
    • 1...Sb7
      • 2.Sc4#
  • Keys
    • 1.Sb5!
      • 1...Se2
        • 2.Qxe2#
      • 1...Sf1
        • 2.Qe2#
      • 1...Sh1
        • 2.Qe2#
      • 1...Sf5
        • 2.Qe2#
      • 1...Sh5
        • 2.Qe2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::S(D)
    • S(b);N_GUARD::S(D),XS(b)
    • S(d);N_GUARD::S(D)
    • S(d);N_GUARD::S(D),XS(d)
  • Actual
    • S(D);
    • Vars
      • S(b);N_GUARD::QAR1(A),XS(b)
      • S(b);N_GUARD::QAR1(A)
      • S(d);N_GUARD::QAR(A),XS(d)
      • S(d);N_GUARD::QAR(A)
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