MESON Chess Problem Database

Problem Display
PID: 180286 (4n2Q/4p1pb/6p1/1N1knBR1/2R5/2K5/8/8 w - - 0 1)

Lider, Valentin Viktorovich

idee & form, 1993

4n2Q/4p1pb/6p1/1N1knBR1/2R5/2K5/8/8

#2

6 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sc7#
    • 1...e6
      • 2.Be4#
  • Tries
    • 1.Bh3?
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qa8#
      • 1...Sc7
        • 2.Qd8#
      • 1...e6
        • 2.Bg2#
      • 1...Bg8!
    • 1.Bd7?
      • 1...Bg8
        • 2.Qh1#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qa8#
      • 1...e6
        • 2.Bc6#
      • 1...Sc7!
    • 1.Bc8?
      • 1...Bg8
        • 2.Qh1#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sc7
        • 2.Qd8#
      • 1...e6
        • 2.Bb7#
      • 1...Sf6!
  • Keys
    • 1.Bg4!
      • 1...Bg8
        • 2.Qh1#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qa8#
      • 1...Sc7
        • 2.Qd8#
      • 1...e6
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD,SBLOCK::S(C)
    • P(d);SBLOCK::B(D)
  • Tries
    • Try
      • B(D);P_PINS(b)
      • Vars
        • S(g);N_GUARD,SBLOCK::S(C)
        • S(g);OGATE::QAB(F)
        • S(g);OGATE::QAR(F)
        • P(d);SBLOCK::B(D)
      • Refutation
        • B(f);
    • Try
      • B(D);P_PINS(b)
      • Vars
        • B(f);OGATE::QAB(F)
        • S(g);N_GUARD,SBLOCK::S(C)
        • S(g);OGATE::QAB(F)
        • P(d);SBLOCK::B(D)
      • Refutation
        • S(g);
    • Try
      • B(D);P_PINS(b)
      • Vars
        • B(f);OGATE::QAB(F)
        • S(g);N_GUARD,SBLOCK::S(C)
        • S(g);OGATE::QAR(F)
        • P(d);SBLOCK::B(D)
      • Refutation
        • S(g);
  • Actual
    • B(D);P_PINS(b)
    • Vars
      • B(f);OGATE::QAB(F)
      • S(g);N_GUARD,SBLOCK::S(C)
      • S(g);OGATE::QAB(F)
      • S(g);OGATE::QAR(F)
      • P(d);SBLOCK::B(D)
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Developed and maintained by Brian Stephenson.
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