MESON Chess Problem Database

Problem Display
PID: 180374 (8/8/1n1p4/2PP4/3kNR2/3Nn1p1/Qp1R1BP1/bK6 w - - 0 1)

Lider, Valentin Viktorovich

Sinfonie Scacchistiche, 1979

8/8/1n1p4/2PP4/3kNR2/3Nn1p1/Qp1R1BP1/bK6

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rf5?
      • 1...Kxe4
        • 2.Rf4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...gxf2
        • 2.Sdxf2#
      • 1...dxc5
        • 2.Sdxc5#
      • 1...Sa4
        • 2.Qxa4#
      • 1...Sd7
        • 2.Qa4#
      • 1...Sa8
        • 2.Qa4#
      • 1...Sc8
        • 2.Qa4#
      • 1...Sc4!
    • 1.Qb3?
      • threat
        • 2.Sc3#
        • 2.Sxg3#
        • 2.Sg5#
        • 2.Sxd6#
        • 2.Sf6#
      • 1...gxf2
        • 2.Sexf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sg5#
        • 2.Sxd6#
        • 2.Sf6#
      • 1...dxc5
        • 2.Sc3#
        • 2.Sxg3#
        • 2.Sexc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sf6#
      • 1...Sc4
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sxd5!
  • Keys
    • 1.Rc2!
      • 1...Kxd3
        • 2.Rd2#
      • 1...Sxd5
        • 2.Qc4#
      • 1...gxf2
        • 2.Sexf2#
      • 1...dxc5
        • 2.Sexc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);
      • Vars
        • K(e);N_SPINS(c),OGATEB,P-FLIGHT,XS(G)::R1(H)
        • S(f);OGATE,XP(J)::QAR1(B),XS(f)
        • P(d);N_SPINS(c),XB(D)::R(C)+S(F),XP(d)
        • P(g);XP(I)::R(C)+S(F),XP(g)
        • S(f);N_GUARD::QAR(B),XS(f)
        • S(f);N_GUARD::QAR(B)
      • Refutation
        • S(f);
    • Try
      • Q(B);
      • Threat
        • DUALS(5)
      • Refutation
        • S(f);XP(J)
  • Actual
    • R(C);
    • Vars
      • K(e);N_SPINS(c),OGATEB,P-FLIGHT,XS(F)::R1(C)
      • S(f);N_GUARD,XP(J)::QAR1(B)
      • P(d);N_SPINS(c),XB(D)::R(H)+S(G),XP(d)
      • P(g);XP(I)::R(H)+S(G),XP(g)
      • S(f);N_GUARD::QAR1(B),XS(f)
      • S(f);N_GUARD::QAR1(B)
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