MESON Chess Problem Database

Problem Display
PID: 193877 (4r1b1/1P2p3/6Q1/1pp5/8/1R2n3/N2N4/kBK5 w - - 0 1)

Rothstein, Louis

Pittsburgh Gazette-Times, 1916

4r1b1/1P2p3/6Q1/1pp5/8/1R2n3/N2N4/kBK5

#2

7 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb3
      • 2.Sxb3#
    • 1...Be6
      • 2.Qg7#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qa6#
      • 1...Bxb3
        • 2.Sxb3#
      • 1...Ra8
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Be6
        • 2.Qg7#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sc4
        • 2.Sc2#
      • 1...e6
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(g);XR(E)::S(D),XB(g)
    • B(g);S_CUTP(e)::QAB(F)
  • Actual
    • S(C);
    • Threat
      • QAR(F)
    • Vars
      • B(g);XR(E)::S(D),XB(g)
      • R(f);OGATE::PXR(f)=Q
      • B(g);S_CUTP(e)::QAB(F)
      • S(b);N_GUARD::S(C),XS(b)
      • S(b);N_GUARD::S(C)
      • P(e);S_CUTB(g)::R(E)
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