MESON Chess Problem Database

Problem Display
PID: 241406 (1K1N1b2/1pN5/3B1pp1/R5p1/P3k3/1P2P2P/2PP2P1/1Bn3nQ w - - 0 1)

Hjelle, David

Parallele 50, 1949

1K1N1b2/1pN5/3B1pp1/R5p1/P3k3/1P2P2P/2PP2P1/1Bn3nQ

#2

14 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.c3#
      • 2.c4#
    • 1...Sce2
      • 2.c3#
      • 2.c4#
    • 1...Sxb3
      • 2.cxb3#
      • 2.c3#
      • 2.c4#
    • 1...Sd3
      • 2.cxd3#
    • 1...Sge2
      • 2.g3#
      • 2.g4#
    • 1...Sf3
      • 2.gxf3#
    • 1...Sxh3
      • 2.gxh3#
      • 2.g3#
      • 2.g4#
    • 1...f5
      • 2.Re5#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Kd5
        • 2.c4#
      • 1...Kf5
        • 2.g4#
      • 1...Sa2
        • 2.c4#
      • 1...Sce2
        • 2.c4#
      • 1...Sge2
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(a);OGATE::P(C),XS(a)
    • S(b);OGATE::P(E),XS(b)
    • P(e);N_GUARD::R1(J)
  • Actual
    • S(L);
    • Threat
      • S(L)
    • Vars
      • B(h);CHECK,XB(K)::S(L),XB(h)
      • K(c);S_FLIGHT::P(C)
      • K(c);S_FLIGHT::P(E)
      • S(a);N_GUARD::B(A)+P(C)
      • S(b);N_GUARD::QAB(B)+P(E)
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