MESON Chess Problem Database

Problem Display
PID: 116368 (1K1k4/3N3r/3PQ3/1b6/8/8/8/8 w - - 0 1)

Hildebrand, Alexander

Stockholms Tidningen, 1945

1K1k4/3N3r/3PQ3/1b6/8/8/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qe7#
    • 1...Rh2
      • 2.Qe7#
    • 1...Rh3
      • 2.Qe7#
    • 1...Rh4
      • 2.Qe7#
    • 1...Rh5
      • 2.Qe7#
    • 1...Rh6
      • 2.Qe7#
    • 1...Rxd7
      • 2.Qg8#
    • 1...Re7
      • 2.Qxe7#
    • 1...Rh8
      • 2.Qe7#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qc8#
      • 1...Rb7+
        • 2.Sxb7#
      • 1...Rc7
        • 2.dxc7#
      • 1...Rd7
        • 2.Qg8#
      • 1...Ba6
        • 2.Qg8#
      • 1...Bd7
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::QAB1(B)
    • R(b);SBLOCK,XS(C)::QAR(B)
    • R(b);N_GUARD::QAB1(B),XR(b)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);CHECK,N_GUARD::S(C),XR(b)
      • R(b);OGATE::P(A),XR(b)
      • R(b);S_CUTB(a)::QAR(B)
      • B(a);N_GUARD::QAR(B)
      • B(a);S_CUTR(b)::S(C)
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