MESON Chess Problem Database

Problem Display
PID: 287249 (n3rQ2/2n3B1/8/K1NB4/8/kN3P1R/3R3b/r7 w - - 0 1)

Vilner, Yakov Semyonovich

2nd HM., 64 Shakhmatnoe obozrenie, 1930

n3rQ2/2n3B1/8/K1NB4/8/kN3P1R/3R3b/r7

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Se6#
  • Tries
    • 1.Sxa1?
      • threat
        • 2.Sc2#
        • 2.Bb2#
        • 2.Ra2#
        • 2.Rd3#
      • 1...Re2
        • 2.Sc2#
        • 2.Bb2#
        • 2.Rd3#
      • 1...Re3
        • 2.Sc2#
        • 2.Bb2#
        • 2.Ra2#
      • 1...Re5
        • 2.Se6#
        • 2.Ra2#
      • 1...Rb8
        • 2.Sc2#
        • 2.Ra2#
      • 1...Be5
        • 2.Ra2#
      • 1...Sb5
        • 2.Sc2#
        • 2.Bb2#
        • 2.Ra2#
      • 1...Sxd5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc2#
      • 1...Sxd5
        • 2.Sb5#
      • 1...Rc1
        • 2.Ra2#
      • 1...Ra2
        • 2.Rxa2#
      • 1...Re5
        • 2.Sce6#
      • 1...Be5
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,S_CUTB(b)::QAB(I)+S(F)
  • Tries
    • Try
      • S(B);XR(a)
      • Threat
        • DUALS(4)
      • Vars
        • B(b);::R1(A)
      • Refutation
        • S(d);XB(G)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • S(d);N_GUARD,XB(G)::S(B)
      • R(a);N_GUARD::R1(A)
      • R(a);N_GUARD::R1(A),XR(a)
      • R(f);N_GUARD,S_CUTB(b)::QAB(I)+S(F)
      • B(b);N_GUARD,S_CUTR(f)::R(D)+P(C)
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