MESON Chess Problem Database

Problem Display
PID: 195087 (5b1q/8/2R4p/2pnp2Q/1p2k2n/1N6/2PPN3/K7 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1918

5b1q/8/2R4p/2pnp2Q/1p2k2n/1N6/2PPN3/K7

#2

7 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Sxc5#
    • 1...Sf3
      • 2.Qg6#
    • 1...Sf5
      • 2.Qh1#
    • 1...c4
      • 2.Rxc4#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Sxc5#
      • 1...c4
        • 2.Sc5#
      • 1...Bxd6!
  • Keys
    • 1.Rxc5!
      • threat
        • 2.Rc4#
      • 1...Bxc5
        • 2.Sxc5#
      • 1...Sf3
        • 2.Qg6#
      • 1...Sf5
        • 2.Qh1#
      • 1...Sc3
        • 2.Qg4#
      • 1...Se3
        • 2.d3#
      • 1...Sf4
        • 2.Sg3#
      • 1...Sb6
        • 2.Qg4#
      • 1...Sf6
        • 2.Rxe5#
      • 1...Sc7
        • 2.Qg4#
      • 1...Se7
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::S(E),XP(d)
    • S(c);N_GUARD,SBLOCK::QAB(F)
    • S(c);OGATE,SBLOCK::QAB(F)
    • P(d);OGATE::R(G),XP(d)
  • Tries
    • Try
      • R(G);
      • Threat
        • S(E),XP(d)
      • Vars
        • P(d);::S(E)
      • Refutation
        • B(h);XR(G)
  • Actual
    • R(G);XP(d)
    • Threat
      • R(G)
    • Vars
      • B(h);XR(G)::S(E),XB(h)
      • S(c);N_GUARD,SBLOCK::QAB(F)
      • S(c);OGATE,SBLOCK::QAB(F)
      • S(e);N_GUARD::QAR2(F)
      • S(e);SBLOCK::P(C)
      • S(e);SBLOCK::S(D)
      • S(e);OGATE::R1(G),XP(f)
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