MESON Chess Problem Database

Problem Display
PID: 138060 (5Q2/2n1r3/2B2B2/K1N5/3N4/k4PbR/3R4/r7 w - - 0 1)

Janovich, J

1st Comm., Kubbel MT, 1945-1946

5Q2/2n1r3/2B2B2/K1N5/3N4/k4PbR/3R4/r7

#2

9 + 5

14752 Soviet Chess Compositions (1945-1947) 1949
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.f4#
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sd5
      • 2.Sb5#
    • 1...Sa6
      • 2.Sb5#
    • 1...Se6
      • 2.Sb5#
    • 1...Sa8
      • 2.Sb5#
    • 1...Se8
      • 2.Sb5#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qb2#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Ra2
        • 2.Rd3#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Re3
        • 2.Qb2#
        • 2.Qb4#
      • 1...Sb5
        • 2.Sxb5#
      • 1...Sd5
        • 2.Sb5#
        • 2.Qb2#
        • 2.Qb3#
      • 1...Sa6
        • 2.Sb5#
        • 2.Qb2#
        • 2.Qb3#
      • 1...Rb1!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sc2#
      • 1...Sxd5
        • 2.Sb5#
      • 1...Rc1
        • 2.Ra2#
      • 1...Ra2
        • 2.Rxa2#
      • 1...Re5
        • 2.Sce6#
      • 1...Be5
        • 2.f4#

This anticipates 62284(1951)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(c);::R(C)+P(B)
    • S(d);N_GUARD::S(D),XS(d)
    • S(d);N_GUARD::S(D)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);N_GUARD::S(D),XS(d)
      • Refutation
        • R(a);
  • Actual
    • B(G);
    • Threat
      • S(D)
    • Vars
      • S(d);N_GUARD,XB(G)::S(D)
      • R(a);N_GUARD::R1(A)
      • R(a);N_GUARD::R1(A),XR(a)
      • R(e);::QAB(I)+S(F)
      • B(c);::R(C)+P(B)
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