MESON Chess Problem Database

Problem Display
PID: 180458 (8/8/8/3Q1K2/4pp2/pNPppp2/RnPPkP1N/5R2 w - - 0 1)

Lider, Valentin Viktorovich

Problemas, 1979

8/8/8/3Q1K2/4pp2/pNPppp2/RnPPkP1N/5R2

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxc2
      • 2.Sc1#
    • 1...exd2
      • 2.Sd4#
      • 2.Qxe4#
    • 1...exf2
      • 2.Qxe4#
  • Tries
    • 1.Kxe4?
      • 1...dxc2
        • 2.Sc1#
      • 1...exd2
        • 2.Sd4#
      • 1...Sd1
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qxd3#
      • 1...Sc4
        • 2.Qxd3#
      • 1...exf2!
    • 1.Raa1?
      • threat
        • 2.Rae1#
      • 1...exd2
        • 2.Sd4#
        • 2.Qxe4#
      • 1...exf2
        • 2.Qxe4#
      • 1...Sd1!
  • Keys
    • 1.cxd3!
      • 1...Sxd3
        • 2.Sd4#
      • 1...exd2
        • 2.Qxe4#
      • 1...exf2
        • 2.Qxe4#
      • 1...exd3
        • 2.Qxf3#
      • 1...Sd1
        • 2.Sc1#
      • 1...Sa4
        • 2.Sc1#
      • 1...Sc4
        • 2.Sc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(d);XP(C)::S(G)
    • P(e);OGATEB,XP(E)::QAR2(I),XP(g)
  • Tries
    • Try
      • K(J);S_FLIGHT,XP(g)
      • Vars
        • P(d);XP(C)::S(G)
        • P(e);SBLOCK,XP(D)::S(G)
        • S(a);N_GUARD::QAB1(I),XP(d)
      • Refutation
        • P(e);XP(E)
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • P(e);OGATEB,XP(E)::QAR2(I),XP(g)
      • Refutation
        • S(a);
  • Actual
    • P(C);XP(d)
    • Vars
      • S(a);SBLOCK,XP(C)::S(G)
      • P(e);OGATEB,XP(D)::QAR2(I),XP(g)
      • P(e);OGATEB,XP(E)::QAR2(I),XP(g)
      • P(g);OGATE,SBLOCK,XP(C)::QAB1(I),XP(f)
      • S(a);::S(G)
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Developed and maintained by Brian Stephenson.
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