MESON Chess Problem Database

Problem Display
PID: 153461 (1N1R4/p4K2/r3pN2/4k3/3n4/4P1bB/3Qn3/3r1R1b w - - 0 1)

Berg, Wolfgang

6th Comm., Wola Gulowska, 1995

1N1R4/p4K2/r3pN2/4k3/3n4/4P1bB/3Qn3/3r1R1b

#2

8 + 9

15345 Wola Gulowska Award 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sg4#
    • 1...Sc1
      • 2.exd4#
    • 1...Sg1
      • 2.exd4#
    • 1...Sc3
      • 2.exd4#
    • 1...Sf4
      • 2.exd4#
    • 1...Sc2
      • 2.Sbd7#
    • 1...Sb3
      • 2.Sbd7#
    • 1...Sf3
      • 2.Sbd7#
    • 1...Sb5
      • 2.Sbd7#
    • 1...Sf5
      • 2.Sbd7#
    • 1...Sc6
      • 2.Sbd7#
  • Tries
    • 1.Rf5+?
      • 1...Sxf5
        • 2.Sbd7#
      • 1...exf5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Sbd7#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Bc6
        • 2.Qd6#
      • 1...Sc2
        • 2.Sg4#
      • 1...Sb3
        • 2.Sg4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sb5
        • 2.Sg4#
      • 1...Sf5
        • 2.Sg4#
      • 1...Sc6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(b);SBLOCK::S(E)
    • S(c);N_GUARD::P(C),XS(e)
    • S(e);::S(G)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(e);XR(A)::S(G)
      • Refutation
        • P(h);XR(A)
  • Actual
    • Q(B);
    • Threat
      • S(G)
    • Vars
      • R(g);N_GUARD::QAB1(B),XR(g)
      • B(b);S_CUTR(g)::QAB1(B)
      • S(e);::S(E)
      • S(e);OGATE::QAR1(B)
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